Patent US4957118A successfully refreshed from Google Patents.
US4948819A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Benzophenone quaternary ammonium linked (meth)acrylates, photocurable and photocured products, and method of coating
Assignee: Ward Blenkinsop and Co Ltd
•
Filing: 1989-02-27
•
Granted: 1990-08-14
•
Expires: 2009-02-27
Abstract
Abstract A compound of general formula ##STR1## in which X - represents one equivalent of an anion; R 5 represents a hydrogen atom or a methyl group; each R 4 independently represents a methyl or ethyl group; and each of R 1 , R 2 and R 3 independently represents a hydrogen or halogen atom, an alkyl, alkoxy or alkylthio group having from 1 to 4 carbon atoms, an arylthio group or a group of formula ##STR2## in which R 4 , R 5 and X have the meanings given above, are useful as water soluble co-polymerizable photoinitiators.
Inventors
- 👤 Peter N. Green
- 👤 William A. Green
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 18:24
CPC Classifications
C; C07; C07C; C07C49/00; C07C49/385; C07C49/457; C07C49/467; C08; C08F; C08F20/00; C08F20/02; C08F20/10; C08F20/34; C08F20/36; C07C225/00; C07C225/02; C07C225/14; C07C225/16; C08F2/00; C08F2/46; C08F2/48; C08F2/50; G; G03; G03F; G03F7/00; G03F7/004; G03F7/027; G03F7/028; G03F7/031; Y; Y10; Y10S; Y10S522/00; Y10S522/904; Y10S522/905
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
92 words
A compound of general formula ##STR10## in which X - represents one equivalent of an anion ; R 5 represents a hydrogen atom or a methyl group; each R 4 independently represents a methyl or ethyl group; and each of R 1 , R 2 and R 3 independently represents a hydrogen or halogen atom, an alkyl, alkoxy or alkylthio group having from 1 to 4 carbon atoms, an arylthio group, or a group of formula ##STR11## in which R 4 , R 5 and X - have the meanings given above.
Claim 2
Dependent Claim
92 words
A compound of general formula ##STR10## in which X - represents one equivalent of an anion ; R 5 represents a hydrogen atom or a methyl group; each R 4 independently represents a methyl or ethyl group; and each of R 1 , R 2 and R 3 independently represents a hydrogen or halogen atom, an alkyl, alkoxy or alkylthio group having from 1 to 4 carbon atoms, an arylthio group, or a group of formula ##STR11## in which R 4 , R 5 and X - have the meanings given above.
Claim 3
Dependent Claim
62 words
A compound as claimed in claim 1, in which each of R 1 , R 2 and R 3 independently represents a hydrogen atom, a halogen atom, an alkyl or alkoxy group having from 1 to 4 carbon atoms, or a group of formula ##STR12## in which R 4 , R 5 and X - have the meanings given in claim 1.
Claim 4
Dependent Claim
46 words
A compound as claimed in claim 2, in which R 2 and R 3 both represent hydrogen atoms, and R 1 represents a hydrogen atom, a halogen atom, an alkyl or alkoxy group having from 1 to 4 carbon atoms, or a group of formula ##STR13##
Claim 5
Dependent Claim
26 words
A compound as claimed in claim 3, in which R 1 represents a hydrogen atom, a chlorine atom, a methoxy group or a tertiary butyl group.
Claim 6
Dependent Claim
21 words
A compound as claimed in any one of claims 1 to 4, in which each R 4 represents a methyl group.
Claim 7
Dependent Claim
20 words
A compound as claimed in any one of claims 1 to 4, in which X - represents a halide ion.
Claim 8
Dependent Claim
24 words
An aqueous photopolymerisable composition comprising an aqueous solution of at least one polymerisable prepolymer and, as photoinitiator, a compound as claimed in claim 1.
Claim 9
Dependent Claim
34 words
A method of producing a substrate coated with a u.v.-cured lacquer film, which comprises applying a composition according to claim 7 to a surface of a substrate and exposing it to ultra violet light.
Claim 10
Dependent Claim
17 words
A substrate coated with a u.v.-cured lacquer film, when prepared according to the method of claim 8.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1993-08-13 | 1994-02-12 | 1994-08-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1997-08-13 | 1998-02-12 | 1998-08-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2001-08-13 | 2002-02-12 | 2002-08-14 | $7700.00 | Window Closed / Lapsed |