US4016340A
Expired / Lapsed
US
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Hydroxyl-containing polymers having aminimide groups attached thereto through an ether linkage
Assignee: Polaroid Corp
•
Filing: 1975-08-07
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Granted: 1977-04-05
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Expires: 1995-08-07
Abstract
Abstract This invention relates to novel polymers containing a plurality of hydroxyl groups having aminimide groups attached thereto through an ether linkage and to methods for attaching said aminimide groups onto said polymers containing a plurality of hydroxyl groups.
Inventors
- 👤 Henry S. Kolesinski
- 👤 Avinash C. Mehta
- 👤 Lloyd D. Taylor
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 16:38
CPC Classifications
C; C08; C08F; C08F8/00; C08F8/30
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
26 words
A novel composition of matter comprising a polymer containing a plurality of hydroxyl groups and having aminimide groups attached to said polymer through an ether linkage.
Claim 2
Dependent Claim
26 words
A novel composition of matter comprising a polymer containing a plurality of hydroxyl groups and having aminimide groups attached to said polymer through an ether linkage.
Claim 3
Dependent Claim
30 words
The product as defined in claim 1 wherein said aminimide group is represented by the formula: ##STR7## wherein each R 1 , R 2 and R 3 are alkyl groups.
Claim 4
Dependent Claim
20 words
The product as defined in claim 1 wherein said polymer containing a plurality of hydroxyl groups is a cellulosic material.
Claim 5
Dependent Claim
14 words
The product as defined in claim 3 wherein said cellulosic material is hydroxypropyl cellulose.
Claim 6
Dependent Claim
19 words
The product as defined in claim 1 wherein said polymer containing a plurality of hydroxyl groups is polyvinyl alcohol.
Claim 7
Dependent Claim
78 words
The process for preparing a polyhydroxyl-containing polymer having aminimide groups attached thereto which comprises reacting a polymer containing a plurality of hydroxyl groups with a compound of the formula: ##STR8## wherein each R 1 , R 2 and R 3 are alkyl groups; X is chloro, iodo or bromo; and each R 4 and R 5 are hydrogen, lower alkyl or phenyl in an organic solvent for said polymer containing a plurality of hydroxyl groups and said compound.
Claim 8
Dependent Claim
78 words
The process for preparing a polyhydroxyl-containing polymer having aminimide groups attached thereto which comprises reacting a polymer containing a plurality of hydroxyl groups with a compound of the formula: ##STR8## wherein each R 1 , R 2 and R 3 are alkyl groups; X is chloro, iodo or bromo; and each R 4 and R 5 are hydrogen, lower alkyl or phenyl in an organic solvent for said polymer containing a plurality of hydroxyl groups and said compound.
Claim 9
Dependent Claim
28 words
The process as defined in claim 6 wherein said polymer containing a plurality of hydroxyl groups is swollen in said organic solvent prior to contact with said compound.
Claim 10
Dependent Claim
20 words
The process as defined in claim 6 wherein said polymer containing a plurality of hydroxyl groups is a cellulosic material.
Claim 11
Dependent Claim
19 words
The process as defined in claim 6 wherein said polymer containing a plurality of hydroxyl groups is polyvinyl alcohol.
Claim 12
Dependent Claim
24 words
The process as defined in claim 8 wherein said cellulosic material is hydroxypropyl cellulose; said solvent comprises t-butanol and said compound is trimethylamine chloroacetimide.
Claim 13
Dependent Claim
13 words
The process as defined in claim 10 wherein said solvent also includes dimethylformamide.
Claim 14
Dependent Claim
30 words
The process for preparing a cross-linked hydroxyl-containing polymer which comprises the deamination of a polymer containing a plurality of hydroxyl groups with aminimide groups grafted thereon through an ether linkage.
Claim 15
Dependent Claim
30 words
The process for preparing a cross-linked hydroxyl-containing polymer which comprises the deamination of a polymer containing a plurality of hydroxyl groups with aminimide groups grafted thereon through an ether linkage.
References Cited (Backward Citations)
US3681079A
Cited
US3816129A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1980-04-04 | 1980-10-04 | 1981-04-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-04-04 | 1984-10-04 | 1985-04-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-04-04 | 1988-10-04 | 1989-04-05 | $7700.00 | Window Closed / Lapsed |