US3607976A
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Compositions from isocyanate-terminated polydienes with isocyanate-terminated cyclic polyethers and adiamine or diol chain extender
Assignee: Phillips Petroleum Co
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Filing: 1968-02-05
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Granted: 1971-09-21
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Expires: 1988-02-05
Abstract
Abstract Novel polymeric compositions comprise the reaction product of (a) isocyanate-telechelic polymers obtained by the reaction of diisocyanates with hydroxy-telechelic polymers of conjugated dienes or conjugated diene/monovinyl aromatic compound copolymers; (b) isocyanate-telechelic polymers obtained by the reaction of diisocyanates with hydroxy-telechelic polymers of oxiranes, oxetanes, or tetrahydrofurans and (c) a simple diol or diamine.
Inventors
- 👤 Henry L Hsieh
- 👤 William R Busler
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 09:44
CPC Classifications
C; C08; C08G; C08G18/00; C08G18/06; C08G18/28; C08G18/67; C08G18/69; C08G18/08; C08G18/10; C08G18/12; C08G18/40; C08G18/48; C08G18/4825
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
79 words
The composition of claim 1 wherein isocyanate-telechelic polymers (a) and (b) have molecular weights within the range of from about 500 to 10,000 and said diamines and diols are represented by the general formula R''(Q)2 wherein Q is or -OH and wherein R'' is an alkylene, cycloalkylene, alkenylene, cycloalkenylene, or arylene radical, or combinations thereof, containing from two to 20 carbon atoms and wherein R'''' is hydrogen, alkyl, cycloalkyl, or alkaryl radical containing from one to eight carbon atoms.
Claim 2
Dependent Claim
23 words
The composition of claim 2 wherein said isocyanate-telechelic polymers (a) and (b) have molecular weights within the range of from 1,000 to 5,000.
Claim 3
Dependent Claim
49 words
The composition of claim 2 wherein said conjugated diene has from four to 12 carbon atoms, said monovinyl-substituted aromatic compounds have from eight to 20 carbon atoms, said cyclic ether has from two to 40 carbon atoms, and said diamine or diol has from two to 28 carbon atoms.
Claim 4
Dependent Claim
11 words
The composition of claim 1 wherein said conjugated diene is 1,3-butadiene.
Claim 5
Dependent Claim
18 words
The composition of claim 1 wherein said conjugated diene is 1,3-butadiene and said cyclic ether is 1,4-epoxybutane (tetrahydrofuran).
Claim 6
Dependent Claim
11 words
The composition of claim 1 wherein said cyclic ether is 1,4-epoxybutane.
Claim 7
Dependent Claim
10 words
The composition of claim 1 wherein said diamine is ethylenediamine.
Claim 8
Dependent Claim
59 words
The composition of claim 1 wherein said conjugated diene is 1,3-butadiene, wherein said cyclic ether is 1,4-epoxybutane (tetrahydrofuran), wherein saiD diamine is ethylene diamine and wherein equimolar amounts of isocyanate-telechelic polybutadiene and isocyanate-telechelic poly (tetrahydrofuran) are reacted with said ethylenediamine employed in an amount slightly in excess of the amount required to react with all the terminal isocyanate groups.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-09-20 | 1975-03-22 | 1975-09-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-09-20 | 1979-03-22 | 1979-09-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-09-20 | 1983-03-22 | 1983-09-21 | $7700.00 | Window Closed / Lapsed |