US4407983A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Polyoxamate polymer/polyols
Assignee: Lyondell Chemical Technology LP
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Filing: 1982-03-29
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Granted: 1983-10-04
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Expires: 2002-03-29
Abstract
Abstract A new class of polymer/polyols based on the condensation polymerization of an oxalate ester and a diamine directly in a polyether polyol. The resultant polyoxamate/polyols have viscosities ranging from 1,500 to 15,000 cps. These polyoxamate/polyols are useful in the preparation of urethane elastomers and high resilience foams.
Inventors
- 👤 Richard M. Gerkin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 03:00
CPC Classifications
C; C08; C08G; C08G69/00; C08G18/00; C08G18/06; C08G18/28; C08G18/40; C08G18/4009; C08G18/4054; C08G18/409; C08G18/60; C08G18/603; C08L; C08L75/00; C08L75/04; C08G2110/00; C08G2110/0008; C08G2110/0041; C08G2110/005; C08G2110/0083
Claims Analysis
Total Claims: 23
Claim 1
Independent Claim
27 words
A polymer/polyol dispersion comprising a polyoxamate polymer dispersed in a polyhydroxyl containing medium wherein said polyhydroxyl containing medium has a molecular weight of from 250 to 14,000.
Claim 2
Dependent Claim
27 words
A polymer/polyol dispersion comprising a polyoxamate polymer dispersed in a polyhydroxyl containing medium wherein said polyhydroxyl containing medium has a molecular weight of from 250 to 14,000.
Claim 3
Dependent Claim
21 words
The polymer/polyol of claim 1 wherein the polyoxamate polymer is the condensation polymerization product of an oxalate ester and a diamine.
Claim 4
Dependent Claim
30 words
The polymer/polyol of claim 2 wherein the oxalate ester is of the general formula: ##STR2## wherein R and R' are individually hydrocarbon radicals having from 1 to 8 carbon atoms.
Claim 5
Dependent Claim
12 words
The polymer/polyol of claim 3 wherein R and R' are ethyl groups.
Claim 6
Dependent Claim
25 words
The polymer/polyol of claim 2 wherein the diamine is selected from the group consisting of ethylene diamine; 1,2-propylene diamine; 1,3 diamines propane and 1,6-hexane diamine.
Claim 7
Dependent Claim
17 words
The polymer/polyol of claim 2 wherein the molar ratio of diamine to oxalate ester is approximately 1:1.
Claim 8
Dependent Claim
78 words
A process for preparing a polymer/polyol dispersion which comprises simultaneously feeding a first feed containing a diamine and a polyhydroxyl containing material with a second feed containing an oxalate ester and a polyhydroxyl containing material into a reactor and initiating condensation polymerization wherein the molar ratio of diamine in the first feed to the oxalate ester in the second feed is approximately 1:1 and wherein the rate which the feeds are delivered to the reactor are substantially equal.
Claim 9
Dependent Claim
78 words
A process for preparing a polymer/polyol dispersion which comprises simultaneously feeding a first feed containing a diamine and a polyhydroxyl containing material with a second feed containing an oxalate ester and a polyhydroxyl containing material into a reactor and initiating condensation polymerization wherein the molar ratio of diamine in the first feed to the oxalate ester in the second feed is approximately 1:1 and wherein the rate which the feeds are delivered to the reactor are substantially equal.
Claim 10
Dependent Claim
28 words
The process of claim 7 wherein the diamine in the first stream is selected from the group consisting of ethylene diamine; 1,2-propylene diamine; 1,3-diamine propane and 1,6-hexane diamine.
Claim 11
Dependent Claim
34 words
The process of claim 7 wherein the oxalate ester in the second stream is of the general formula: ##STR3## wherein R and R' are individually hydrocarbon radicals having from 1 to 8 carbon atoms.
Claim 12
Dependent Claim
12 words
The process of claim 9 wherein R and R' are ethyl groups.
Claim 13
Dependent Claim
21 words
The process of claim 7 wherein the polyhydroxyl containing material is a polyether which contains at least two terminal hydroxyl groups.
Claim 14
Dependent Claim
20 words
The process of claim 11 wherein the polyether is a glycerine started propylene oxide polyol capped with 15% ethylene oxide.
Claim 15
Dependent Claim
14 words
The process of claim 12 wherein the polyether has a hydroxyl number of 34.
Claim 16
Dependent Claim
14 words
The process of claim 12 wherein the polyether has a hydroxyl number of 27.
Claim 17
Independent Claim
32 words
A method for producing polyurethane foams which comprises reacting and foaming a polyoxamate polymer/polyol composition with an organic polyisocyanate in the presence of a catalyst, a blowing agent and a foam stabilizer.
Claim 18
Independent Claim
32 words
A method for producing polyurethane foams which comprises reacting and foaming a polyoxamate polymer/polyol composition with an organic polyisocyanate in the presence of a catalyst, a blowing agent and a foam stabilizer.
Claim 19
Dependent Claim
11 words
The method of claim 15 wherein the one-shot technique is employed.
Claim 20
Dependent Claim
10 words
A polyurethane foam produced by the method of claim 15.
Claim 21
Independent Claim
27 words
A method for producing polyurethane elastomers which comprises reacting a polyoxamate poly/polyol composition with a chain extender and an organic polyisocyanate in the presence of a catalyst.
Claim 22
Independent Claim
27 words
A method for producing polyurethane elastomers which comprises reacting a polyoxamate poly/polyol composition with a chain extender and an organic polyisocyanate in the presence of a catalyst.
Claim 23
Dependent Claim
10 words
A polyurethane elastomer produced by the method of claim 18.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1986-10-03 | 1987-04-04 | 1987-10-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1990-10-03 | 1991-04-04 | 1991-10-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1994-10-03 | 1995-04-04 | 1995-10-04 | $7700.00 | Window Closed / Lapsed |