US4014771A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Highly reactive resin compositions hardenable by UV-light
Assignee: Bayer AG
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Filing: 1976-02-17
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Granted: 1977-03-29
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Expires: 1996-02-17
Abstract
Abstract A mixture which is hardenable by UV-light in an extremely short time comprising A. 30 - 95 % by weight of a reaction product of a polyepoxide and acrylic or methacrylic acid; B. 5 - 70 % by weight of a tri- to hexa-acrylic or methacrylic acid ester of a tri- to hexahydric alcohol or their mixtures and C. 0.2 - 10 % by weight, based on the sum of (A) and (B), of a conventional photoinitiator. The mixture is preferred used as binder for printing inks.
Inventors
- 👤 Hans Jurgen Rosenkranz
- 👤 Hans Rudolph
- 👤 Artur Haus
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 05:45
CPC Classifications
C; C08; C08F; C08F299/00; C08F299/02; C08F299/026; C08F299/028; Y; Y10; Y10S; Y10S525/00; Y10S525/922
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
161 words
A mixture hardenable by UV light comprising A. 30-95% by weight of the reaction product of at least one epoxide having more than one epoxide group per molecule and acrylic acid, said reaction product containing about 0.6 to 1 mol of carboxyl groups per epoxide group; B. 5-70% by weight of at least one tris-, tetra-, penta- or hexaacrylic or tris-, tetra-, penta- or hexamethacrylic acid ester of at least one trihydric, tetrahydric, pentahydric or hexahydric alcohol and C. 0.2-10% by weight, based on the weight of (A) and (B), of a photoinitiator of the formula ##STR3## wherein Ar is phenyl or said phenyl mono-substituted by alkyl, alkoxy or halogen; R 1 is alkyl having from 1 to 12 carbon atoms, cyclohexyl, tetrahydropyranyl or 1-methoxyethyl and R 2 is allyl, benzyl, halobenzyl or --CH 2 --CH 2 --X wherein X is CN, CONH 2 , or COOR 3 wherein R 3 is hydrogen or alkyl having 1 to 10 carbon atoms.
Claim 2
Dependent Claim
161 words
A mixture hardenable by UV light comprising A. 30-95% by weight of the reaction product of at least one epoxide having more than one epoxide group per molecule and acrylic acid, said reaction product containing about 0.6 to 1 mol of carboxyl groups per epoxide group; B. 5-70% by weight of at least one tris-, tetra-, penta- or hexaacrylic or tris-, tetra-, penta- or hexamethacrylic acid ester of at least one trihydric, tetrahydric, pentahydric or hexahydric alcohol and C. 0.2-10% by weight, based on the weight of (A) and (B), of a photoinitiator of the formula ##STR3## wherein Ar is phenyl or said phenyl mono-substituted by alkyl, alkoxy or halogen; R 1 is alkyl having from 1 to 12 carbon atoms, cyclohexyl, tetrahydropyranyl or 1-methoxyethyl and R 2 is allyl, benzyl, halobenzyl or --CH 2 --CH 2 --X wherein X is CN, CONH 2 , or COOR 3 wherein R 3 is hydrogen or alkyl having 1 to 10 carbon atoms.
Claim 3
Dependent Claim
18 words
The mixture of claim 1 wherein (A) contains 0.8 to 1 mol of carboxyl groups per epoxide group.
Claim 4
Dependent Claim
11 words
The mixture of claim 1 wherein (C) is α-(β-cyanoethyol)-benzoin ethyl ether.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1980-03-28 | 1980-09-27 | 1981-03-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-03-28 | 1984-09-27 | 1985-03-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-03-28 | 1988-09-27 | 1989-03-29 | $7700.00 | Window Closed / Lapsed |