Screen printable, UV curable opaque legend ink composition
US4280888A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Feb 12, 1980 |
| Grant date | Jul 28, 1981 |
| Priority date | — |
| Expiry date | Feb 12, 2000 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/24901
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
This invention relates to a screen printable, opaque legend ink composition curable on exposure to radiation, e.g., UV radiation in the presence of a photoinitiator or high energy ionizing radiation comprising PA1 (a) 15 to 40% by weight of an allyl terminated polyene which is the reaction product of an epoxide and an unsaturated amine, PA1 (b) 5 to 25% by weight of a cocurable allyl terminated polyene having a molecular weight of less than 500 selected from the group consisting of diallyl phthalate, triallyl isocyanurate, diallyl adipate, diallyl azelate, diallyl sebacate, diallyl itaconate, diallyl maleate, diallyl chlorendate, diallyl malate and triallyl cyanurate, PA1 (c) 15 to 45% by weight of a polythiol having a molecular weight in the range from about 94 to 20,000 of the general formula: R.sub.8 --(SH).sub.n wherein R.sub.8 is a polyvalent organic moiety free from reactive carbon-to-carbon unsaturation and n is at least 2 and PA1 (d) a pigment member of the group consisting of 0.5 to 25% by weight of zinc sulfide and 0.2 to 1.0% by weight of carbon black, said curable legend ink having a viscosity as measured on a Brookfield viscometer at 1 rpm using an RV7 spindle in the r…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.