US4400500A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Polyaminoester thermosetting resins
Assignee: Rohm and Haas Co
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Filing: 1982-04-30
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Granted: 1983-08-23
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Expires: 2002-04-30
Abstract
Abstract This invention relates to polyaminoester thermosetting resins prepared by reacting polyalkylene maleate oligomers with polyfunctional amines via a Michael type addition reaction. The reaction is preferably conducted by a RIM process. Alpha, beta ethylenically unsaturated monomers, which are slow to react with amines, may be added to the reaction to copolymerize with the maleate functionality in a post cure step. The polyaminoester thermosetting resins are useful as plastics, coatings, resin modifiers, and elastomers.
Inventors
- 👤 Everett J. Kelley
- 👤 Casmir S. Ilenda
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 20:28
CPC Classifications
C; C08; C08G; C08G69/00; C08G69/02; C08G69/26
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
99 words
A thermosetting polymer composition comprising the reaction product of one or more oligomers of the formula: ##STR6## wherein n represents two to ten maleate units, R represents alkyl, hydroxyalkyl, or acyloxyalkyl, and R' and R" are --H, --CH 3 , --C 2 H 5 , --CH 2 Cl, --CH 2 Br, --C 6 H 5 (phenyl), --CH 2 OCOCH═CH 2 , --CH 2 OCOC(CH 3 )═CH 2 , 13 CH 2 OCH 2 CH═CH 2 , --CH 2 OC 4 H 9 , or R' together with R" is --C 4 H 8 --(cyclic), with one or more polyamines.
Claim 2
Dependent Claim
99 words
A thermosetting polymer composition comprising the reaction product of one or more oligomers of the formula: ##STR6## wherein n represents two to ten maleate units, R represents alkyl, hydroxyalkyl, or acyloxyalkyl, and R' and R" are --H, --CH 3 , --C 2 H 5 , --CH 2 Cl, --CH 2 Br, --C 6 H 5 (phenyl), --CH 2 OCOCH═CH 2 , --CH 2 OCOC(CH 3 )═CH 2 , 13 CH 2 OCH 2 CH═CH 2 , --CH 2 OC 4 H 9 , or R' together with R" is --C 4 H 8 --(cyclic), with one or more polyamines.
Claim 3
Dependent Claim
15 words
Composition of claim 1 wherein the polyamine is selected from the group consisting of: ##STR7##
Claim 4
Dependent Claim
45 words
Composition in accordance with claim 1 further including one or more ethylenically unsaturated monomers which are copolymerizable with maleates but which react slowly or not at all with amines and remain available for a free-radical initiated copolymerization in the final stage of the thermoset formation.
Claim 5
Dependent Claim
19 words
Composition of claims 1 or 3 wherein the oligomer is polyethylene maleate containing two to four maleate repeating units.
Claim 6
Dependent Claim
22 words
Composition of claims 1 or 3 wherein the polyamine is selected from bis(p-aminocyclohexyl)methane, m-xylene diamine, 1,3-propylene diamine, N,N'-di(aminopropyl)-ethylene diamine, or tetraethylene pentamine.
Claim 7
Dependent Claim
16 words
Composition of claim 1 wherein the thermosetting polymer is further crosslinked by a post-reaction curing step.
Claim 8
Dependent Claim
21 words
Composition of claim 1 or 3 further comprising one or more of fillers, fibers, fiberglas, antioxidants, inhibitors, colorants or foaming agents.
References Cited (Backward Citations)
US4180632A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1986-08-22 | 1987-02-21 | 1987-08-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1990-08-22 | 1991-02-21 | 1991-08-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1994-08-22 | 1995-02-21 | 1995-08-23 | $7700.00 | Window Closed / Lapsed |