{"id":6778,"date":"2024-03-29T03:17:26","date_gmt":"2024-03-29T03:17:26","guid":{"rendered":"https:\/\/longchangchemical.com\/?p=6778"},"modified":"2026-04-28T10:42:26","modified_gmt":"2026-04-28T10:42:26","slug":"6778-2","status":"publish","type":"post","link":"https:\/\/longchangchemical.com\/ko\/6778-2\/","title":{"rendered":"\ub2e4\uc591\ud55c \ud56d\uc0b0\ud654\uc81c\uc640 \uacf5\uc815 \uc6a9\ub7c9\uc774 PC \ud50c\ub77c\uc2a4\ud2f1\uc758 \ubcc0\uc0c9\uc5d0 \uc5b4\ub290 \uc815\ub3c4 \uc601\ud5a5\uc744 \ubbf8\uce58\ub098\uc694?"},"content":{"rendered":"

In the beginning stage of oxidation, as the temperature rises it will intensify the thermal degradation reaction, the oxidative degradation reaction of PC materials is an autocatalytic process, the carbonyl and hydroxyl groups in the polymer may affect the neighbouring chemical bonds, causing them to split into free radicals, and these free radicals can react with oxygen to generate new free radicals, and so on, week by week, repeatedly cycling the oxidative reaction according to the free-radical chain course has been carried out, with the formation of peroxides and other oxygen-containing groups on the polymer chain will happen to break the macromolecular chain. With the formation of peroxide and other oxygen-containing groups on the polymer chain, the breakage of the polymer chain will occur, and in the chain termination stage, the combination of free radicals will cause cross-linking of polymers, no matter whether the chain breakage or cross-linking will cause irreversible changes in the mechanical properties of the material, and the formation and accumulation of a variety of carbonyl compounds will cause the material’s discolouration, affecting its appearance.<\/p>\n

 <\/p>\n

Therefore, the thermal stability of PC can be improved by choosing to add suitable antioxidants to prevent or attenuate the discolouration of PC caused by thermal degradation. In this case, the peroxide decomposer reduces the number of reactive free radicals that need to be terminated by the chain-terminating antioxidant; and the chain-terminating antioxidant likewise reduces the burden of the peroxide decomposer. The -OH contained in the hindered phenolic antioxidant competes with the polymer for the peroxyl radicals formed in auto-oxidation, and through the transfer of hydrogen atoms, a stable antioxidant radical is formed, which, in turn, has the ability to capture reactive radicals and inhibit the polymer oxidation process. Therefore, by adding antioxidants, the thermal stability of PC can be improved, thus improving the colour of PC products.<\/p>\n

 <\/p>\n

The effect of different antioxidants on product colour<\/p>\n

Antioxidants can be added during PC synthesis to attenuate or prevent oxidative degradation side reactions from occurring, thus maintaining the appearance of the PC product colour. The effect of antioxidants on product colour in PC synthesis was examined, and the results are listed in Table 3-1. From Table 3-1, it can be seen that without adding any antioxidant, the yellow index and solution colour difference of the PC products produced were high. When adding the main antioxidant 1076, 1010, 2246, BHT, auxiliary antioxidant 168, DLTP, DSTP, can significantly reduce the yellow index of PC products and solution colour difference, of which antioxidant 168, BHT can also improve the transparency of the product, antioxidant 1076, 1010, 2246 basically has no effect on the transparency of the antioxidant DLTP, DSTP slightly Decrease the transparency of the product, and add auxiliary antioxidant 300 effect is not good, increased the yellow index of PC products and solution colour difference, and also reduces the transparency of the product. Among the above antioxidants, only 1076 and 2246 significantly affected the viscosity average molecular weight of the products, and the addition of other antioxidants had less effect on the viscosity average molecular weight of the products. Comparing the product’s yellow index, transparency, solution colour difference and MOA, the order of the effects of the main and auxiliary antioxidants is 168\uff1eBHT\uff1e2246\uff1eDSTP\uff1e1076\uff1eDLTP\uff1e1010\uff1e300 in the following order.<\/p>\n

 <\/p>\n

Antioxidant DSTP and 1076, DSTP and 1010, 168 and 1076, 168 and 2246 of the compounding effect is better, can varying degrees to reduce the product’s yellow index and solution colour difference, improve its transparency; antioxidant 300 and 1010, 168 and 1010 of the compounding effect is not very obvious, although it can be a certain degree of reduction in the product’s yellow index and solution colour difference, but The effect of compounding antioxidant 300 with 1010 and 168 with 1010 is not very obvious, although it can reduce the yellow index and solution colour difference to some extent, but it reduces the transparency of the product; while the effect of compounding antioxidant DLTP with 1010 and 168 with BHT is not good, which increases the yellow index and solution colour difference of the product and reduces its transparency. Among them, only the antioxidant DSTP and 1076, DSTP and 1010 compounding addition, the viscosity average molecular weight of the product has a greater impact, and the other antioxidants compounding addition, the viscosity average molecular weight of the product has a smaller impact. Comparing the yellow index, transparency, solution colour difference and viscosity average molecular weight of the products, the order of the superiority and inferiority of the effects of the main and auxiliary antioxidants after compounding and adding are:<\/p>\n

 <\/p>\n

168+2246\uff1eDSTP+1010\uff1eDSTP+1076\uff1e168+1076\uff1e168+1010\uff1e300+1010\uff1eDLTP+1010\uff1e168+BHT.<\/p>\n

\"\"<\/p>\n

The above main antioxidants belong to the hindered phenolic antioxidants, whose function is to capture the free radicals [see formula (3-1), formula (3-2)] and generate stable non-free radicals ROO-O-Ar, so that they no longer participate in the oxidation cycle. The key to the antioxidant effect lies in the reactive hydroxyl group it contains, and the reactivity of the hydroxyl group with free radicals is affected by the spatial site resistance of its neighbouring R group and the electronic effect of the opposite R group. the larger the R group is, the larger the site resistance is, and the smaller the reactivity is. when the R group is an electron-donating group (e.g., methyl, tertiary-butyl), it accelerates the separation of the hydrogen atoms and the oxygen atoms on the hydroxyl group, which in turn improves the rate constant of the hydroxyl group’s reaction with free radicals kinh, reducing the phenolic radical’s pro-electronic substitution group constant, i.e., increasing the radical capture number n, thus increasing the antioxidant activity; when the R group is an electron-withdrawing group (e.g., nitro or hydroxyl), it reduces the antioxidant activity of the phenolic antioxidant. The above phenolic antioxidants to BHT’s effect is the best, because of its molecular structure in the neighbouring R group is tert-butyl, its spatial site resistance is small, the R group is also an electron-donating group methyl, have increased its antioxidant activity.<\/p>\n

\"\"<\/p>\n

During the PC oxidative radical chain reaction, the production and accumulation of hydroperoxides is the most critical step in the degradation of PC materials, and when a certain concentration of hydroperoxides is generated, the autoxidation counter of the radical branched chain advances rapidly. Therefore, it is necessary to add auxiliary antioxidants to decompose hydroperoxides during PC synthesis. Phosphite antioxidant 168, thioester antioxidant DLTP and DSTP are very effective decomposers of hydroperoxides, which can make the very unstable macromolecule hydroperoxides to generate stable and inactive products and terminate the chain reaction. Among them, the phosphite antioxidant 168 is the most effective. Because the antioxidant 168 in addition to a good decomposition of hydroperoxides, but also has a good ability to protect the colour. The main component of antioxidant 168 is phosphite, through the Arbuzov reaction [see formula (3-3), (3-4)] can capture the residual harmful chloride ions in the reaction material system, the formation of stable compounds <(RO)3PR> + CI-, preventing the initial discolouration of PC macromolecules.<\/p>\n

\"\"<\/p>\n

At the same time, the phosphorus atom in the molecular formula of antioxidant 168 contains two lone pairs of electrons, which is a good chelating agent, which can react with the residual harmful metal ions in the system, such as Fe2+, Mn2+, etc. [see formula (3-5)] to form a chelate, avoiding the reaction of the non-ferrous metal ions and phenolic hydroxyl group in the molecule of the PC to form the dark-coloured compounds, which will guarantee the appearance of the PC colour and improve the transparency of the product.<\/p>\n

\"\"<\/p>\n

According to the literature, the main and auxiliary antioxidants can play a good antioxidant synergistic effect when they are added to polymer materials together. In the antioxidant process, the hindered phenolic antioxidant captures PC oxidation radicals, and the auxiliary antioxidant decomposes hydroperoxides, and the two kinds of antioxidants are added in a certain ratio of compounding, which theoretically can get the antioxidant system with better performance than any single component. However, due to the difference in molecular structure between the antioxidants, as well as the reaction’s own characteristics, resulting in different main and auxiliary antioxidant compounding effect of the difference.<\/p>\n

The effect of antioxidant dosage on PC colour<\/strong><\/h2>\n

<\/p>\n

Quick answer:<\/strong> For antioxidant, UV absorber, and HALS topics, formulators usually compare long-term protection, process stability, and color control together because those priorities do not always point to the same additive.<\/p>\n

<\/p>\n

Antioxidants can slow down the thermo-oxidative degradation reaction in the process of synthesising PC, improve its stability and reduce the degree of yellowing of PC. Therefore, the dosage of antioxidant also has a certain effect on the appearance of PC colour. The effect of different dosage of antioxidant 168 on PC colour is shown in Figure 3-2.<\/p>\n

\"\"<\/p>\n

As can be seen from Figure 3-2, the dosage of antioxidant 168 has a very obvious effect on the PC yellow index, transparency and solution colour difference. With the increase of the dosage of antioxidant 168, the appearance quality of PC products improved significantly, when the dosage is 0.6wt%, the appearance quality of PC products is better, the yellow index is only 1.3%, the transparency reaches 99.6%, the solution colour difference is 0.51%. It indicates that the appropriate amount of antioxidant 168 can effectively prevent the high-temperature thermo-oxidative degradation of PC products and reduce the degree of side reactions at high temperatures. When the dosage of antioxidant 168 is small, the antioxidant effect is not obvious and the colour of the obtained product is not good. After the dosage of antioxidant 168 exceeds 0.6 wt%, the yellow index of the product increases and the transparency decreases because the dosage of antioxidant 168 is too much, and its main component phosphite reacts with the weakly alkaline catalyst in a side reaction, which results in the weakening of the antioxidant effect of the antioxidant and the activity of the catalyst, and the appearance of the product has a bad colour.<\/p>\n

\"\"<\/p>\n

The effect of antioxidant addition process on PC colour<\/strong><\/h2>\n

Due to the characteristics of the reaction of PC prepared by melt ester exchange method and the different properties of antioxidants, the different addition process of antioxidants may also have a certain effect on the appearance of PC colour. Table 3-2 examines the effects of different addition processes of antioxidant 168 on the colour of PC at the same dosage, respectively.<\/p>\n

 <\/p>\n

From Table 3-2, it can be seen that in the process of PC synthesis, several different addition processes of antioxidants have a greater impact on the appearance of the PC product colour, are different degrees of reduction of the yellow index of PC and the solution colour difference, improve its transparency, and basically have no effect on the viscosity average molecular weight of the product. The order of the effect of the addition process from excellent to poor is as follows: add after the ester exchange reaction \u2265 add in the polycondensation reaction \u2265 add before the ester exchange reaction > add after the polycondensation reaction. In addition, the effects of different addition processes of antioxidant BHT and antioxidant 2246 were investigated separately, and the results are shown in Table 3-3.<\/p>\n

\"\"<\/p>\n

From Table 3-3 to see, antioxidant BHT and antioxidant 2246 add process effect of the order of excellence are: ester exchange reaction after adding > ester exchange reaction before adding, and Table 3-2 in the antioxidant 168 add process effect of excellence in the order of consistency, indicating that the antioxidant is mainly in the polycondensation reaction stage plays a role in the polymerisation phase, polycondensation stage when the reaction temperature is high, at this time to add the antioxidant can effectively prevent high temperature thermal degradation side reaction occurs. At this time, the addition of antioxidants can effectively prevent the occurrence of thermal degradation side reactions at high temperatures, and play a good antioxidant effect.<\/p>\n

 <\/p>\n

The effect of antioxidants on the performance of polycarbonate<\/strong><\/h2>\n

Through the experimental investigation of the above antioxidant, under the performance index of yellow index, transparency, solution colour difference and characteristic viscosity, it is concluded that the effect of antioxidant 168 is the best, Figures 3-3 and 3-4 are the appearance diagrams of PC products without the addition of this antioxidant and with the addition of this antioxidant, respectively.<\/p>\n

\"\"<\/p>\n

Comparison of Figures 3-3 and 3-4 shows that the addition of antioxidant can significantly improve the appearance of PC product colour, but it is not known whether the addition of antioxidant will have a certain effect on the structural properties of PC, so the addition of 0.6 wt% of antioxidant 168 to the PC was carried out to characterize the product.<\/p>\n

 <\/p>\n

4.1 Infrared analysis<\/p>\n

 <\/p>\n

Infrared spectra can provide some information about chemical structure units, end groups, additives and crystalline state, etc. PC without antioxidant addition and PC with antioxidant addition were subjected to infrared characterisation, as shown in Figures 3-5 and 3-6.<\/p>\n

\"\"<\/p>\n

\"\"<\/p>\n

From the infrared spectra of the samples in Figs. 3-5 and 3-6, it can be seen that the characteristic peaks of the two figures are basically the same. 1769cm-1 is the characteristic absorption peak of the stretching vibration of the planted group (C=O), which is located in the high-frequency side of the usual absorption of the carbonyl group due to the structure of the polycarbonate that makes the double bonding of its (C=O) enhancement, and therefore, the absorption is located in the high-frequency side of the usual absorption of the carbonyl group. 1219cm-1 and 1158cm-1 have a strong peak for the C-O stretching vibration peaks, so it can be determined that the sample contains an ester carbonyl group. 1503cm-1 has a medium intensity characteristic absorption peak, which is caused by the stretching vibration of the benzene ring skeleton, indicating that the sample contains a benzene ring. 2925cm-1, 2968cm-1, and 3042cm-1 are the characteristic absorption peaks of the stretching vibration of the C-H bond on the benzene ring. 1080cm-1, 1014cm-1, and 828cm-1 correspond to the characteristic absorption peaks of the stretching vibration of the C-H bond on the benzene ring, 828cm-1 correspond to the fingerprint peaks of the para-aromatic ring, which is basically consistent with the typical characteristic spectra of polycarbonate, and thus it can be determined that its main chain is a linear structure containing a polycarbonate group and a benzene ring, i.e., the sample is a linear bisphenol A-type polycarbonate. It also shows that the addition of antioxidants did not cause any change in the structure of PC.<\/p>\n

 <\/p>\n

4.2 Thermal stability<\/p>\n

 <\/p>\n

Due to the relatively high temperature of PC injection moulding, which is greater than 240\u2103, but PC starts to degrade in oxygen above 250\u2103. It has been reported in the literature that the thermal stability of PC can be effectively improved by adding antioxidants. The PC products without the addition of antioxidant and the addition of antioxidant were analysed thermogravimetrically, as shown in Figures 3-7 and 3-8.<\/p>\n

\"\"<\/p>\n

\"\"<\/p>\n

As shown in Figures 3-7 and 3-8, the epitaxial onset temperature of PC products without added antioxidant was 401.33\u00b0C, while that of PC products with added antioxidant was 417.97\u00b0C. The thermal degradation temperature of PC was increased by 17\u00b0C, which indicates that the addition of antioxidant can significantly improve the thermal stability of PC products.<\/p>\n

 <\/p>\n

4.3 Differential scanning calorimetric analysis<\/p>\n

 <\/p>\n

The glass transition temperature (Tg) is an important index for measuring resins, and usually resins used below the glass transition temperature are called hard plastics, and resins used above the glass transition temperature are called rubbers. Therefore, the glass transition temperature is a significant reference value for the later moulding and processing of polycarbonate coolers. Figures 3-9 and 3-10 show the DSC curves of PC products without added antioxidant and PC products with added antioxidant, respectively.<\/p>\n

\"\"<\/p>\n

\"\"<\/p>\n

As can be seen from Figure 3-9 and Figure 3-10, the Tg of PC products in both cases is 142\u00b0C, which is similar to the glass transition temperature of PC standard products of 149\u00b0C, indicating that the addition of antioxidants to PC has basically no effect on its glass transition temperature. At the same time in the range of 230 \u2103 ~ 270 \u2103, the two curves are not found on the two curves of the obvious melting point turning point, indicating that the polycarbonate does not have a fixed melting point, that is, amorphous form.<\/p>\n

Contact Us Now!<\/b><\/strong><\/h1>\n

If you need Price, please fill in your contact information in the form below, we will usually contact you within 24 hours. You could also email me\u00a0info@longchangchemical.com<\/span><\/a>\u00a0during working hours ( 8:30 am to 6:00 pm UTC+8 Mon.~Sat. ) or use the website live chat to get prompt reply.<\/b><\/strong><\/h4>\n

 <\/p>\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n
Formulation Products<\/strong><\/td>\n<\/td>\n<\/td>\n<\/tr>\n
CHLUMIAO\u00ae 1135<\/span><\/a><\/td>\nCAS 125643-61-0<\/td>\nIrganox 1135 \/ Antioxidant 1135<\/td>\n<\/tr>\n
CHLUMIAO\u00ae 1425<\/span><\/a><\/td>\nCAS 65140-91-2<\/td>\nIrganox 1425 \/ Dragonox 1425 \/ Antioxidant 1425 \/ BNX 1425<\/td>\n<\/tr>\n
CHLUMIAO\u00ae 1726<\/span><\/a><\/td>\nCAS 110675-26-8<\/td>\nAntioxidant 1726 \/ Irganox 1726 \/ Omnistab AN 1726<\/td>\n<\/tr>\n
CHLUMIAO\u00ae 3052<\/span><\/a><\/td>\nCAS 61167-58-6<\/td>\nIRGANOX 3052 \/ 4-methylphenyl Acrylate \/ Antioxidant 3052<\/td>\n<\/tr>\n
CHLUMIAO\u00ae 5057<\/span><\/a><\/td>\nCAS 68411-46-1<\/td>\nIrganox 5057 \/ Antioxidant 5057 \/ Omnistab AN 5057<\/td>\n<\/tr>\n
CHLUMIAO\u00ae 697<\/span><\/a><\/td>\nCAS 70331-94-1<\/td>\nAntioxidant 697 \/ Irganox 697 \/ Naugard XL-1 \/ Antioxidant 697<\/td>\n<\/tr>\n
CHLUMIAO\u00ae 80<\/span><\/a><\/td>\nCAS 90498-90-1<\/td>\nIrganox 80 \/ Antioxidant 80<\/td>\n<\/tr>\n
CHLUMIAO\u00ae 1024<\/span><\/a><\/td>\nCAS 32687-78-8<\/td>\nIrganox 1024 \/ Antioxidant 1024<\/td>\n<\/tr>\n
CHLUMIAO\u00ae 1035<\/span><\/a><\/td>\nCAS 41484-35-9<\/td>\nIrganox 1035 \/ Antioxidant 1035<\/td>\n<\/tr>\n
CHLUMIAO\u00ae HE-S01\/N40<\/span><\/a><\/td>\n<\/td>\n<\/td>\n<\/tr>\n
CHLUMIAO\u00ae HN-55\/70\/80\/502\/510\/514\/516\/602<\/span><\/a><\/td>\n<\/td>\n<\/td>\n<\/tr>\n
CHLUMIAO\u00ae HC-30\/100<\/span><\/a><\/td>\n<\/td>\n<\/td>\n<\/tr>\n
CHLUMIAO\u00ae HO-17\/17EH<\/span><\/a><\/td>\n<\/td>\n<\/td>\n<\/tr>\n
CHLUMIAO\u00ae HS-502\/503\/504\/603\/605\/608\/101<\/span><\/a><\/td>\n<\/td>\n<\/td>\n<\/tr>\n
Phosphite antioxidants<\/strong><\/td>\n<\/td>\n<\/td>\n<\/tr>\n
CHLUMIAO\u00ae 168<\/span><\/a><\/td>\nCAS 31570-04-4<\/td>\nIrganox 168 \/ Antioxidant 168<\/td>\n<\/tr>\n
CHLUMIAO\u00ae 626<\/span><\/a><\/td>\nCAS 26741-53-7<\/td>\nUltranox 626 \/ Irgafos 126<\/td>\n<\/tr>\n
CHLUMIAO\u00ae 1790<\/span><\/a><\/td>\nCAS 40601-76-1<\/td>\nAntioxidant 1790\/ Cyanox 1790 \/ Irganox 1790<\/td>\n<\/tr>\n
CHLUMIAO\u00ae 245<\/span><\/a><\/td>\nCAS 36443-68-2<\/td>\nIrganox 245 \/ Antioxidant 245<\/td>\n<\/tr>\n
High Performance Phosphites<\/strong><\/td>\n<\/td>\n<\/td>\n<\/tr>\n
CHLUMIAO\u00ae 1500<\/span><\/a><\/td>\nCAS 96152-48-6<\/td>\nAntioxidant 1500<\/td>\n<\/tr>\n
CHLUMIAO\u00ae 4500<\/span><\/a><\/td>\nCAS 13003-12-8<\/td>\nAntioxidant 4500<\/td>\n<\/tr>\n
CHLUMIAO\u00ae PDP<\/span><\/a><\/td>\nCAS 80584-86-7<\/td>\nPowerNox DHOP \/ Antioxidant DHOP<\/td>\n<\/tr>\n
CHLUMIAO\u00ae 618<\/span><\/a><\/td>\nCAS 3806-34-6<\/td>\nAntioxidant 618<\/td>\n<\/tr>\n
CHLUMIAO\u00ae DLP<\/span><\/a><\/td>\nCAS 21302-09-0<\/td>\nAntioxidant DLP<\/td>\n<\/tr>\n
CHLUMIAO\u00ae DPP<\/span><\/a><\/td>\nCAS 4712-55-4<\/td>\nAntioxidant DPP<\/td>\n<\/tr>\n
CHLUMIAO\u00ae DTDP<\/span><\/a><\/td>\nCAS 36432-46-9<\/td>\nAntioxidant DTDP<\/td>\n<\/tr>\n
CHLUMIAO\u00ae THOP<\/span><\/a><\/td>\nCAS 80584-85-6<\/td>\nAntioxidant THOP<\/td>\n<\/tr>\n
CHLUMIAO\u00ae TNPP<\/span><\/a><\/td>\nCAS 26523-78-4<\/td>\nAntioxidant TNPP \/ Tris(nonylphenyl) phosphite<\/td>\n<\/tr>\n
CHLUMIAO\u00ae PEP-36<\/span><\/a><\/td>\nCAS 80693-00-1<\/td>\nAntioxidant 636 \/ Antioxidant 636<\/td>\n<\/tr>\n
CHLUMIAO\u00ae 9228<\/span><\/a><\/td>\nCAS 154862-43-8<\/td>\nIrganox 9228 \/ Antioxidant 9228<\/td>\n<\/tr>\n
CHLUMIAO\u00ae PEPQ<\/span><\/a><\/td>\nCAS 119345-01-6<\/td>\nHostanox PEPQ \/ Antioxidant PEPQ<\/td>\n<\/tr>\n
<\/td>\n<\/td>\n<\/td>\n<\/tr>\n
Low Impurity Phosphites<\/strong><\/td>\n<\/td>\n<\/td>\n<\/tr>\n
CHLUMIAO\u00ae DPOP<\/span><\/a><\/td>\nCAS 15647-08-2<\/td>\n2-ethylhexyl diphenyl phosphite<\/td>\n<\/tr>\n
CHLUMIAO\u00ae 8621<\/span><\/a><\/td>\nCAS 68123-00-2<\/td>\nAntioxidant 8621<\/td>\n<\/tr>\n
CHLUMIAO\u00ae DPDP<\/span><\/a><\/td>\nCAS 26544-23-0<\/td>\nAntioxidant DPDP<\/td>\n<\/tr>\n
CHLUMIAO\u00ae PDDP<\/span><\/a><\/td>\nCAS 25550-98-5<\/td>\nAntioxidant PDDP<\/td>\n<\/tr>\n
CHLUMIAO\u00ae PDOP<\/span><\/a><\/td>\nCAS 3164-60-1<\/td>\nAntioxidant PDOP<\/td>\n<\/tr>\n
CHLUMIAO\u00ae TPP<\/span><\/a><\/td>\nCAS 101-02-0<\/td>\nAntioxidant TPP<\/td>\n<\/tr>\n
CHLUMIAO\u00ae Poly(dicyclopentadiene-co-p-cresol)<\/span><\/a><\/td>\nCAS 68610-51-5<\/td>\nPoly(dicyclopentadiene-co-p-cresol)<\/td>\n<\/tr>\n
CHLUMIAO\u00ae SEED<\/span><\/a><\/td>\nCAS 42774-15-2<\/td>\nAntioxidant SEED \/ Omnistab LS 5519 \/ Light Stabilizer 856<\/td>\n<\/tr>\n
Inhibited phenolic Antioxidants<\/strong><\/td>\n<\/td>\n<\/td>\n<\/tr>\n
CHLUMIAO\u00ae 264<\/span><\/a><\/td>\nCAS 128-37-0<\/td>\nAntioxidant 264 \/ Butylated hydroxytoluene<\/td>\n<\/tr>\n
CHLUMIAO\u00ae 2,6-Di-tert-butylphenol<\/span><\/a><\/td>\nCAS 128-39-2<\/td>\n2,6-Di-tert-butylphenol<\/td>\n<\/tr>\n
CHLUMIAO\u00ae 300<\/span><\/a><\/td>\nCAS 96-69-5<\/td>\nIrganox 300 \/ Antioxidant 300<\/td>\n<\/tr>\n
CHLUMIAO\u00ae 2246<\/span><\/a><\/td>\nCAS 119-47-1<\/td>\nIrganox 2246 \/ BNX 2246<\/td>\n<\/tr>\n
CHLUMIAO\u00ae 1222<\/span><\/a><\/td>\nCAS 976-56-7<\/td>\nAntioxidant 1222 \/ Irganox 1222<\/td>\n<\/tr>\n
CHLUMIAO\u00ae 702<\/span><\/a><\/td>\nCAS 118-82-1<\/td>\nIrganox 702 \/ Antioxidant 702 \/ Ethanox 702<\/td>\n<\/tr>\n
CHLUMIAO\u00ae DBHQ<\/span><\/a><\/td>\nCAS 88-58-4<\/td>\nAntioxidant DTBHQ<\/td>\n<\/tr>\n
CHLUMIAO\u00ae MTBHQ<\/span><\/a><\/td>\nCAS 1948-33-0<\/td>\n2-tert-butylhydroquinone\u00a0 Industrial Grade<\/td>\n<\/tr>\n
CHLUMIAO\u00ae 1076<\/span><\/a><\/td>\nCAS 2082-79-3<\/td>\nIrganox 1076 \/ Antioxidant 1076<\/td>\n<\/tr>\n
CHLUMIAO\u00ae 1010<\/span><\/a><\/td>\nCAS 6683-19-8<\/td>\nIrganox 1010 \/ Antioxidant 1010<\/td>\n<\/tr>\n
CHLUMIAO\u00ae 1330<\/span><\/a><\/td>\nCAS 1709-70-2<\/td>\nIrganox 1330 \/ Ethanox 330<\/td>\n<\/tr>\n
CHLUMIAO\u00ae 1520<\/span><\/a><\/td>\nCAS 110553-27-0<\/td>\nIrganox 1520 \/ Antioxidant 1520<\/td>\n<\/tr>\n
Phenol Free Phosphites Antioxidants<\/strong><\/td>\n<\/td>\n<\/td>\n<\/tr>\n
CHLUMIAO\u00ae 8608<\/span><\/a><\/td>\nCAS 26544-27-4<\/td>\nAntioxidant AO DPD \/ Everaox 202<\/td>\n<\/tr>\n
CHLUMIAO\u00ae 430<\/span><\/a><\/td>\nCAS 36788-39-3<\/td>\nAntioxidant 430 \/ WESTON 430<\/td>\n<\/tr>\n
CHLUMIAO\u00ae 8608T<\/span><\/a><\/td>\nCAS 1334238-11-7, 69439-68-5<\/td>\nAntioxidant 8608T<\/td>\n<\/tr>\n
CHLUMIAO\u00ae 8627<\/span><\/a><\/td>\nCAS 68610-62-8<\/td>\nAntioxidant 8627<\/td>\n<\/tr>\n
CHLUMIAO\u00ae TDP<\/span><\/a><\/td>\nCAS 25448-25-3<\/td>\nAntioxidant TDP<\/td>\n<\/tr>\n
CHLUMIAO\u00ae TLP<\/span><\/a><\/td>\nCAS 3076-63-9<\/td>\nAntioxidant TLP<\/td>\n<\/tr>\n
CHLUMIAO\u00ae TOP<\/span><\/a><\/td>\nCAS 301-13-3<\/td>\nAntioxidant TOP<\/td>\n<\/tr>\n
CHLUMIAO\u00ae TTDP<\/span><\/a><\/td>\nCAS 77745-66-5<\/td>\nAntioxidant TTDP<\/td>\n<\/tr>\n
Thiol esters Antioxidants<\/strong><\/td>\n<\/td>\n<\/td>\n<\/tr>\n
CHLUMIAO\u00ae DLTDP<\/span><\/a><\/td>\nCAS 123-28-4<\/td>\nDilauryl thiodipropionate<\/td>\n<\/tr>\n
CHLUMIAO\u00ae DSTDP<\/span><\/a><\/td>\nCAS 693-36-7<\/td>\nistearyl thiodipropionate\/ Antioxidant DSTDP<\/td>\n<\/tr>\n
Aminic Antioxidants<\/strong><\/td>\n<\/td>\n<\/td>\n<\/tr>\n
CHLUMIAO\u00ae 3114<\/span><\/a><\/td>\nCAS 27676-62-6<\/td>\nIrganox 3114 \/ Antioxidant 3114<\/td>\n<\/tr>\n
CHLUMIAO\u00ae 4,4\u2032-biphenol<\/span><\/a><\/td>\nCAS 92-88-6<\/td>\n4,4\u2032-biphenol<\/td>\n<\/tr>\n
Metal deactivators Antioxidants<\/strong><\/td>\n<\/td>\n<\/td>\n<\/tr>\n
CHLUMIAO\u00ae 1098<\/span><\/a><\/td>\nCAS 23128-74-7<\/td>\nIrganox 1098 \/ Antioxidant 1098<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

 <\/p>\n

<\/p>\n

A practical selection route for antioxidant, UV absorber, and HALS packages<\/h2>\n

Most stabilizer decisions work best when they are treated as package decisions rather than single-product decisions. Technical buyers usually get the strongest answer by reviewing long-term heat aging, process stability, weather exposure, and color sensitivity together.<\/p>\n