빠른 답변: 구매 담당자가 작업 중입니다 2K polyurethane primers usually get a cleaner first shortlist when they separate three different jobs instead of treating every silicone additive as the same primer aid. 클루미아그® 3467 should move first when the primer still needs a compatibility-first route ~을 위한 anti-cratering, substrate wetting, and leveling. 클루미페® 3370 deserves earlier review when the project is a true reactive 2K PU route and the team wants stronger leveling, gloss-hold surface refinement, and smoothness inside a polyurethane crosslinking system. CHLUMIFE® 3166 belongs earlier when the primer still needs a 더 넓은 균형 ~의 surface smoothness, substrate wettability, dry feel, anti-blocking, and gloss support, but the team can keep its pinhole, whitening, and foam watchpoints visible.
That is the commercially useful split. This page is ~ 아니다 another broad coating-additives overview, and it is not a duplicate of the already-live 2K polyurethane topcoat 또는 waterborne primer pages. It is a new CHLUMICRYL® application page for buyers whose project lives specifically in the 2K PU primer window and who need a faster first screen before moving into the finish layer.
Why 2K polyurethane primers deserve their own additive page
A 2K polyurethane primer does a different job from a topcoat, and it also lives in a different system lane from a waterborne primer. In real B2B formulation work, primer teams usually are trying to stabilize surface entry, crater tolerance, 수준 측량, and a sufficiently clean surface for the next coating step, rather than chasing the same final-feel priorities that dominate a finish coat.
That makes a stage-specific primer page worth publishing. Longchang already has broader live pages for 클로미크릴® 코팅 및 잉크 첨가제, 수평 조절 첨가제, 결함 기반 첨가제 선택, waterborne primers, 그리고 2액형 폴리우레탄 상도 코팅. Those pages explain the branch. This page answers the narrower question that often appears one step earlier in the line: which additive deserves the first sample round when a 2K PU primer still needs cleaner compatibility, better leveling inside a reactive PU route, or broader surface balance before topcoat?
What the current company-supported evidence actually separates
- 클루미아그® 3467 롱창의 지원을 받습니다. 다성분 변성 폴리실록산 that 시스템 호환성을 우선시합니다.. The company page directly supports 반분화구, 기판 습윤, 그리고 수준 측량, with addition logic that fits either polyurethane modification or direct coating modification. Supported dosage is 0.05% ~ 1% of total formulation for solvent systems, 0.5%에서 5%까지 of resin amount for resin modification, and 0.5%에서 5%까지 of total formulation for water-based systems.
- 클루미페® 3370 롱창의 지원을 받습니다. 반응성 하이드록실 폴리에스터 변성 폴리실록산 that reacts with isocyanate 그리고 입니다 2액형 폴리우레탄 가교 시스템에 적합. The company page frames it around 표면 평탄화, 더 높은 광택, 그리고 더 매끄러운, with a supported dosage of 0.05% to 3% of total formulation. It can be added at any stage of production or later, and the current company page supports it in UV 및 용매 시스템, not water-based systems.
- CHLUMIFE® 3166 지원됩니다 폴리에테르 변성 폴리오르가노실록산 ~을 위한 UV, 용매 및 수성 시스템. Longchang supports reduced surface tension, 기판 습윤성, 표면 평활도, 긁힘 방지, 안티블로킹, 수준 측량, 광택 개선, and especially 탁월한 건조감권장 복용량은 다음과 같습니다. 0.05% ~ 1%, with explicit cautions around 핀홀, 호분, and possible 폼 안정화.
That is enough company-supported separation to build a real buyer page. External framing is used only conservatively for the general industry point that a 2K PU primer additive decision usually splits into compatibility-first defect cleanup, reactive primer leveling inside the PU route, 그리고 broader surface-balance work before the finish layer.
간략 비교표: 어떤 경로가 먼저 화면에 나와야 할까요?
| Buyer priority in 2K PU primers | 최적의 첫 번째 경로 | 왜 이것이 첫 번째에 있어야 하는가 | 주요 감시 지점 |
|---|---|---|---|
| Compatibility-first anti-cratering, substrate-wetting, and leveling control in a more formulation-sensitive primer package | 클루미아그® 3467 | Longchang explicitly prioritizes system compatibility and supports anti-cratering, wetting, and leveling, plus polyurethane-modification use | Its supported caution is that the feel is slightly less refined when compared with more feel-led routes |
| Reactive 2K PU leveling and smoother primer-surface preparation before the finish layer | 클루미페® 3370 | Longchang positions it for two-component polyurethane crosslinking systems and ties it to leveling, gloss, and smoothness | Keep the system boundary visible because the current company page supports UV and solvent routes, not water-based systems |
| Broader surface balance across wettability, smoothness, dry feel, anti-blocking, leveling, and gloss support | CHLUMIFE® 3166 | Longchang은 UV, 용매 및 수성 시스템 전반에 걸쳐 더욱 폭넓은 표면 성능 균형을 제공합니다. | 핀홀, 백화 현상 및 거품 안정화 위험은 조기에 검사해야 합니다. |
CHLUMIAG® 3467이 더 나은 첫 번째 선택일 때
3467 should move first when the 2K PU primer still looks compatibility-sensitive and the main question is whether the team can stabilize anti-cratering, substrate wetting, and leveling without narrowing the formulation window too fast. Longchang’s current product page is unusually helpful here because it does not position 3467 only as a generic leveling aid. It explicitly says the product 시스템 호환성을 우선시합니다., and it also supports use for polyurethane modification.
That matters in 2K primer work. Some primer programs are not failing because the lab chose the wrong surface family in the abstract. They are failing because the system is still sensitive and the first screen needs a route that keeps formulation tolerance visible while still addressing crater and wetting pressure.
- 뒷받침되는 강점: anti-cratering, substrate wetting, leveling, and compatibility-first behavior
- 덧셈 논리: can be added with the polyol during resin prepolymerization, added later in polyurethane modification, or added directly to the coating system
- 시스템 호환성: UV, 용매 및 수성 시스템
- 주요 주의사항: Longchang notes that the feel is slightly less refined, so it should not be the automatic first choice if the project already has moved into a more feel-led or premium-finish target
In short, 3467 is the cleaner first screen when the primer team needs compatibility-first control before worrying about a more reactive or broader feel-balance route.
CHLUMIFE® 3370이 더 나은 첫 번째 선택일 때
3370 should move earlier when the buyer is working on a true reactive 2K polyurethane route and wants the additive choice to stay inside that system logic. Longchang supports 3370 as a 반응성 하이드록실 폴리에스터 변성 폴리실록산 that reacts with isocyanate so the organosilicon can combine with the resin system in block or graft form. The company page also says it is 2액형 폴리우레탄 가교 시스템에 적합.
That makes 3370 commercially useful when the primer already is clearly a 2K PU system and the first question is not only broad wetting correction. It is whether the lab can achieve better leveling, smoother primer laydown, and a cleaner surface before the next coating stage without stepping outside the reactive polyurethane route.
- 뒷받침되는 강점: leveling, higher gloss, and better smoothness
- 권장 복용량: 전체 제형의 0.05% ~ 3%
- 덧셈 논리: 생산 과정의 어느 단계에서든 또는 그 이후에 추가할 수 있습니다.
- 시스템 호환성: supported in UV and solvent systems, not water-based systems on the current company page
So 3370 is the better first benchmark when the buyer needs a reactive 2K PU primer route rather than a more compatibility-led or broader multi-system route.
CHLUMIFE® 3166이 더 나은 첫 번째 선택일 때
3166 deserves earlier review when the primer still needs a 보다 광범위한 표면 균형 경로 before the topcoat stage. Longchang’s company page positions 3166 around 표면장력 제어, 탁월한 건조감, 기판 습윤성, 표면 평활도, 안티블로킹, 수준 측량, 그리고 광택 개선. That is a different first-screen role from 3467’s compatibility-first logic or 3370’s reactive-PU route.
This makes 3166 useful when the primer problem is still broader than one narrow crater or reactive-chemistry decision. Some teams need a first route that helps them judge whether the primer surface can become cleaner, smoother, and easier to handle before they narrow into a more specialized option.
- 뒷받침되는 강점: substrate wettability, surface smoothness, anti-blocking, leveling, gloss support, and excellent dry feel
- 권장 복용량: 총 제형의 0.05% ~ 1%
- 덧셈 논리: can be added at any stage, and can be diluted first for easier addition
- 주요 주의사항: Longchang explicitly warns about pinholes, whitening, and possible foam stabilization, so a defoamer check should stay visible during qualification
That makes 3166 the better first route when the lab still needs a broader primer-surface read before it narrows into a tighter compatibility or reactive-system decision.
구매자는 첫 번째 샘플 검토 전에 어떻게 선택해야 할까요?
1. 실패의 실제 단계부터 시작하세요
If the primer still looks compatibility-sensitive and crater-prone, start with 3467. If the line already is clearly a 2K PU reactive route and needs a cleaner primer surface before the finish layer, move 3370 earlier. If the primer still needs a broader balance across wettability, smoothness, and handling, start with 3166.
2. 시스템 경계를 명확하게 보이도록 유지하십시오.
3467 and 3166 both sit across wider system windows. 3370 does not. That alone can save time when the team is screening more than one primer route in parallel.
3. Keep compatibility logic separate from reactive-route logic
Both 3467 and 3370 can touch leveling, but the supported selection logic is not the same. One is a compatibility-first route. The other is a reactive polyurethane route tied directly to isocyanate-crosslinking systems.
4. Use the watchpoint, not only the headline benefit
3467 keeps formulation tolerance visible but is not the most feel-led option. 3370 is best treated as a true 2K PU route, not a general water-based shortcut. 3166 can be broad and useful, but its pinhole, whitening, and foam watchpoints should be screened early.
5. 첫 라운드를 꽉 조여라
For many 2K PU primer projects, one compatibility-first route, 하나 reactive PU route그리고 하나 보다 광범위한 표면 균형 경로 teach more than an overloaded first panel packed with near-neighbor additives.
이 페이지에서 추천하는 롱창 코스
- 클러스터 개요: 클로미크릴® 코팅 및 잉크 첨가제
- Related stage-specific page: How to Choose Additives for Waterborne Primers
- Related finish-layer page: 2액형 폴리우레탄 상도 도료용 표면 첨가제 선택 방법
- 관련 기능 페이지: 코팅 및 잉크용 평활 첨가제 선택 방법
- Related diagnosis page: 코팅 및 잉크에 사용되는 습윤 첨가제, 평활성 첨가제, 소포제, 불소계 계면활성제
- 3467 product page: 클루미아그® 3467
- 3370 제품 페이지: 클루미페® 3370
- 3166 제품 페이지: CHLUMIFE® 3166
자주 묻는 질문
Which additive should I screen first if my 2K PU primer still shows crater risk and formulation sensitivity?
Usually CHLUMIAG® 3467, because Longchang directly supports it around compatibility-first use, anti-cratering, substrate wetting, leveling, and polyurethane-modification routes.
When should 3370 move ahead of 3467?
3370 should move ahead when the project is clearly a reactive two-component polyurethane route and the main target is cleaner leveling and surface refinement inside that PU crosslinking system.
When does 3166 make more sense than the other two?
It makes more sense when the primer still needs a broader surface-balance screen across wettability, smoothness, anti-blocking, and handling, rather than only a compatibility-first or reactive-system decision.
Is this page the same as the 2K PU topcoat page?
No. The topcoat page is built around finish-layer selection logic. This new page is for the primer stage and helps buyers screen compatibility-first crater control, reactive primer leveling, and broader pre-topcoat surface balance.
Need a faster shortlist for 2K polyurethane primers?
If your primer project is stuck between compatibility-first defect cleanup, reactive PU leveling, 그리고 broader surface balance before topcoat, define the real first-screen job before requesting samples. That usually shows much faster whether 3467, 3370, or 3166 deserves the first round.