Claims
- 1. A photoactive mixture comprising by weight
- (a) 100 parts of a composition or a polymer of 50-100 parts of acrylic monomer and 0-50 parts of copolymerizable monoethylenically unsaturated monomer and
- (b) 0.01 to 2 parts of a chromophore-substituted halomethyl-s-triazine of the formula ##STR13## wherein R.sub.1, R.sub.2, R.sub.3, and R.sub.4 are independently hydrogen or alkoxy groups, and 1 to 3 of R.sub.1, R.sub.2, R.sub.3, and R.sub.4 are hydrogen.
- 2. A photoactive mixture as defined in claim 1 wherein said alkoxy groups have at most 12 carbon atoms.
- 3. A photoactive mixture as defined in claim 2 wherein at least two of said groups are alkoxy.
- 4. A photoactive mixture as defined in claim 3 wherein two adjacent alkoxy groups are interconnected to form a ring.
- 5. A photoactive mixture as defined in claims 1 or 2 wherein said composition or polymer (a) is a composition which is partially polymerized and has a coatable viscosity of 300 to 20,000 centipoises at ordinary room temperature.
- 6. The product of photopolymerizing the partially photopolymerized composition as defined in claim 5 to about 100% conversion of the unsaturated moiety.
- 7. A photoactive mixture as defined in claims 1 or 2 wherein said composition or polymer (a) is a polymer of an alkyl acrylate.
- 8. A solution of a photoactive mixture as defined in claim 7 in organic solvent.
- 9. A photoactive mixture as defined in claim 1 wherein the s-triazine (b) is selected from the group consisting of ##STR14## wherein n is 1, 2 or 3.
- 10. A photoactive mixture as defined in claim 1 wherein the composition or polymer (a) comprises a composition or partially polymerized composition of (1) 88-99 parts of alkyl acrylate having 4-12 carbon atoms in its alkyl groups or alkyl acrylates having an average of 4-12 carbon atoms in their alkyl groups and (2) correspondingly 12-1 parts of said copolymerizable monomer and is polymerizable to a pressure-sensitive adhesive state.
- 11. A photoactive mixture as defined in claims 1 or 10 wherein at least part of said copolymerizable monomer has highly polar groups.
- 12. A photoactive mixture as defined in claim 11 wherein the copolymerizable monomer having highly polar groups is at least one of acrylic acid, methacrylic acid, itaconic acid, acrylamide, methacrylamide, acrylonitrile, methacrylonitrile, N-substituted acrylamides, hydroxyalkyl acrylates, cyanoethyl acrylate, N-vinylpyrrolidone, and maleic anhydride.
CROSS-REFERENCE
This application is a division of applicant's copending application Ser. No. 121,404, filed Feb. 14, 1980 now U.S. Pat. No. 4,330,590.
US Referenced Citations (7)
Foreign Referenced Citations (2)
Number |
Date |
Country |
675420 |
May 1966 |
BEX |
2718259 |
Nov 1978 |
DEX |
Divisions (1)
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Number |
Date |
Country |
Parent |
121404 |
Feb 1980 |
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