UV Offset Ink and UV Waterless Offset Ink Reference Formulation
(1) UV Offset Ink Reference Formulation
PEA 25.0
EA 25.0
Fatty acid modified EA 5.0
PUA 10.0
Pigment 17.0
CaCO3 5.0
SiO2 0.5
BP 3.0
ITX 2.0
ODAB 5.0
Wax 1.0
Additives 1.5
(2) UV red offset ink reference formula
PEA (PRO30037) 27
PEA (CN2282) 20
Di-TMPTA 11
(EO)3TMPTA 2
907 3
TZT 2
KBI 5
Activated amine (CN373) 2
Red pigment (PR 57:1) 20
Talc 6
Polyethylene wax 2
(3) UV yellow offset ink reference formula
PEA (PRO20071) 20
PEA (CN790) 30
Di-TMPTA 10
(EO)3TMPTA 5
907 2
TZT 2
KBI 5
Activated amine (CN373) 2
Yellow pigment (PR 57:1) 14
Talc 8
Polyethylene wax 2
(4) UV blue offset ink reference formula
EA 37.3
Hexafunctional aromatic PUA 10.4
TMPTA 31.9
Phthalocyanine blue 18.0
Silicone acrylate 0.9
Wetting and dispersing agent 1.5
LFC1001 3.0
EDAB 2.0
ITX 1.0
(5) UV Black Offset Ink Reference Formulation
EA 21
Polyfunctionality PUA 10
Polyfunctionality PEA 10
DPHA 8
DDA 15
BP 3
ITX 3
369 3
184 1
EDAB 6
Carbon Black 18
Pigment Violet 3 1
Polyethylene wax 1
Note: For use on paper or card stock.
A practical selection route for photoinitiator-related projects
When technical buyers or formulators screen photoinitiators, the most useful decision frame is usually cure quality plus application fit: which package cures reliably, keeps appearance acceptable, and still works under the lamp, film thickness, and substrate conditions of the actual process.
- Match the package to the lamp first: mercury lamps, UV LEDs, and visible-light systems can rank the same photoinitiators very differently.
- Check depth cure and surface cure separately: a film that feels dry on top can still be weak underneath.
- Balance yellowing with reactivity: the strongest deep-cure route is not always the best commercial choice if color or migration risk becomes unacceptable.
- Use the final formula as the benchmark: pigment load, monomer package, and film thickness can all change the apparent ranking of the same initiator.
Recommended product references
- CHLUMINIT 819: Useful when a formulation needs stronger absorption and deeper cure support.
- CHLUMINIT 184: A classic free-radical benchmark for fast surface cure in many UV systems.
- CHLUMINIT 1173: A practical comparison point for classic short-wave UV initiation.
- CHLUMINIT ITX: A useful long-wave support route in many printing-ink packages.
FAQ for buyers and formulators
Why are blended photoinitiator packages so common?
Because one product may control yellowing or lamp fit well while another improves cure depth or line-speed performance, so the full package is often stronger than any single grade.
Should incomplete cure always be solved by adding more initiator?
Not automatically. The real limitation may be the lamp, film thickness, pigment shading, or the rest of the reactive system rather than simple under-dosage.
Contact Us Now!
Quick answer: Photoinitiator choice is usually driven by lamp match, cure depth, yellowing, and whether the final film still performs on the real substrate. The best package is rarely the cheapest single grade.
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 info@longchangchemical.com during working hours ( 8:30 am to 6:00 pm UTC+8 Mon.~Sat. ) or use the website live chat to get prompt reply.