US4086299A
Expired / Lapsed
US
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Copolymers of an allylamine grafted onto an unsaturated benzoin copolymer
Assignee: Commonwealth Scientific and Industrial Research Organisation
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Filing: 1976-05-17
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Granted: 1978-04-25
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Expires: 1996-05-17
Abstract
Abstract A resin comprising a copolymer of an unsaturated benzoin or unsaturated benzoin alkyl ether and a neutral or basic derivative of an unsaturated carboxylic acid, said copolymer having grafted onto it an allylamine.
Inventors
- 👤 Mervyn Benjamin Jackson
- 👤 Wolfgang Hermann Fritz Sasse
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 23:05
CPC Classifications
C; C08; C08F; C08F265/00; C08F265/04; C08F261/00; C08F261/10; C08F267/00; C08F267/06
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
48 words
A resin comprising a copolymer of an unsaturated benzoin or unsaturated benzoin alkyl ether and an ester of an unsaturated carboxylic acid, said copolymer having grafted onto it an allylamine and wherein the molar ratio of benzoin derivative to acid derivative is in the range 0.5:99.5 to 20:80.
Claim 2
Dependent Claim
48 words
A resin comprising a copolymer of an unsaturated benzoin or unsaturated benzoin alkyl ether and an ester of an unsaturated carboxylic acid, said copolymer having grafted onto it an allylamine and wherein the molar ratio of benzoin derivative to acid derivative is in the range 0.5:99.5 to 20:80.
Claim 3
Dependent Claim
34 words
A resin according to claim 1 wherein the unsaturated benzoin or unsaturated benzoin alkyl ether is chosen from the group consisting of allylbenzoin, vinyl benzoin, allyl benzoin methyl ether and vinyl benzoin methyl ether.
Claim 4
Dependent Claim
32 words
A resin according to claim 1 wherein the ester is an ester of unsaturated carboxylic acid chosen from the group consisting of acrylic, methacrylic, vinylacetic, allylacetic, maleic, maleamic, itaconic and fumaric acids.
Claim 5
Dependent Claim
24 words
A resin according to claim 1 wherein the molar ratio of benzoin derivative to acid derivative is in the range from 2:98 to 10:90.
Claim 6
Dependent Claim
36 words
A resin according to claim 1 wherein the allylamine is chosen from the group consisting of triallylamine, methyldiallylamine, ethyldiallylamine, 1,4-bis (N,N-diallylaminomethyl) benzene, 2,4,6-tris (N,N-diallylaminomethyl) toluene, 1,2,4-tris (N,N-diallylaminomethyl) benzene, 1,6-bis (N,N-diallylamino) hexane, n-propyl diallylamine and benzyl diallylamine.
Claim 7
Dependent Claim
20 words
An amphoteric resin obtained by treating the resin of claim 1 to convert the ester to the free carboxylic group.
Claim 8
Dependent Claim
25 words
An amphoteric resin according to claim 6 wherein the molar ratio of amine groups to acid groups is in the range from 10:90 to 90:10.
Claim 9
Dependent Claim
25 words
An amphoteric resin according to claim 7 wherein the molar ratio of amine groups to acid groups is in the range from 20:80 to 60:40.
Claim 10
Dependent Claim
50 words
A process of manufacturing the resin according to claim 1, said process comprising photografting an allylamine onto a linear copolymer of an unsaturated benzoin or unsaturated benzoin alkyl ether and said ester of an unsaturated carboxylic acid under light of wave length in the range from 250 to 450 nm.
Claim 11
Dependent Claim
19 words
A process according to claim 9 wherein the wave length is in the range from 300 to 400 nm.
Claim 12
Dependent Claim
26 words
A process of converting a resin according to claim 1 to an amphoteric resin wherein the ester is converted to the free carboxyl group by hydrolysis.
References Cited (Backward Citations)
US3992276A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1981-04-24 | 1981-10-24 | 1982-04-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-04-24 | 1985-10-24 | 1986-04-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-04-24 | 1989-10-24 | 1990-04-25 | $7700.00 | Window Closed / Lapsed |