US5668191A
Expired / Lapsed
US
⏱️ 0.0 years remaining
One-shot cold molded flexible polyurethane foam from low primary hydroxyl polyols and process for the preparation thereof
Assignee: Lyondell Chemical Technology LP
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Filing: 1995-12-21
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Granted: 1997-09-16
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Expires: 2015-12-21
Abstract
Abstract Cold molded flexible polyurethane foams may be prepared from low primary hydroxyl Polyoxyalkylene polyols when polyoxyalkylene polyols having an unsaturation of 0.02 meq/g or less provide the substantial portion of the polyol component.
Inventors
- 👤 Mark R. Kinkelaar
- 👤 Frank E. Critchfield
- 👤 James L. Lambach
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 20:56
CPC Classifications
C; C08; C08G; C08G18/00; C08G18/06; C08G18/28; C08G18/40; C08G18/48; C08G18/4833; C08G18/4837; B; B29; B29B; B29B7/00; B29B7/74; B29B7/7404; B29B7/7409; B29B7/7428; C08G18/4009; C08G18/4072; C08G18/4866; B29B7/80; B29B7/88; B29B7/94; C08G2110/00; C08G2110/0008; C08G2110/0083
Claims Analysis
Total Claims: 23
Claim 1
Independent Claim
76 words
A process for preparing cold-molded polyurethane flexible foam, comprising reacting: a) one or more di- or polyisocyanates at an isocyanate index of from 70 to about 130; with b) a low primary hydroxyl polyol component comprising in substantial part one or more polyoxypropylene/polyoxyethylene random copolymers having an unsaturation of less than about 0.02 meq/g, and a primary hydroxyl content of less than 50 mol percent; and c) an effective amount of water as a blowing agent.
Claim 2
Dependent Claim
76 words
A process for preparing cold-molded polyurethane flexible foam, comprising reacting: a) one or more di- or polyisocyanates at an isocyanate index of from 70 to about 130; with b) a low primary hydroxyl polyol component comprising in substantial part one or more polyoxypropylene/polyoxyethylene random copolymers having an unsaturation of less than about 0.02 meq/g, and a primary hydroxyl content of less than 50 mol percent; and c) an effective amount of water as a blowing agent.
Claim 3
Dependent Claim
26 words
The process of claim 1 wherein said polyoxypropylene/polyoxyethylene random copolymer comprises in excess of about 70 weight of all polyoxyalkylene polyether polyol in said polyol component.
Claim 4
Dependent Claim
47 words
The process of claim 1 wherein said polyol component further comprises an amount of a polymer polyol and/or polymer modified polyol to provide a dispersed polymer solids content of from about 1 weight percent to about 25 weight percent based on the weight of the polyol component.
Claim 5
Dependent Claim
29 words
The process of claim 1 wherein at least one of said one or more polyoxypropylene/polyoxyethylene random copolymers has a primary hydroxyl content of less than about 35 mol percent.
Claim 6
Dependent Claim
26 words
The process of claim 1 wherein at least one of said one or more polyoxypropylene/polyoxyethylene random copolymers has an unsaturation of about 0.015 meq/g or less.
Claim 7
Dependent Claim
36 words
The process of claim 1 wherein said polyol component further comprises a high primary hydroxyl content polyoxypropylene/polyoxyethylene copolymer polyol, and wherein the average unsaturation of all low primary hydroxyl polyols is less than about 0.02 meq/g.
Claim 8
Dependent Claim
23 words
The process of claim 6 wherein the average unsaturation of all polyoxyalkylene polyols in said polyol component is less than about 0.02 meq/g.
Claim 9
Dependent Claim
23 words
The process of claim 6 wherein the average unsaturation of all polyoxyalkylene polyols in said polyol component is less than about 0.015 meq/g.
Claim 10
Dependent Claim
17 words
The process of claim 1 wherein said di- or polyisocyanate comprises TDI, MDI, or a mixture thereof.
Claim 11
Dependent Claim
75 words
A cold-molded polyurethane foam comprising the reaction product of: a) one or more di- or polyisocyanates at an isocyanate index of from 70 to about 130; with b) a low primary hydroxyl polyol component comprising in substantial part one or more polyoxypropylene/polyoxyethylene random copolymers having an unsaturation of less than about 0.02 meq/g, and a primary hydroxyl content of less than 50 mol percent; and c) an effective amount of water as a blowing agent.
Claim 12
Dependent Claim
75 words
A cold-molded polyurethane foam comprising the reaction product of: a) one or more di- or polyisocyanates at an isocyanate index of from 70 to about 130; with b) a low primary hydroxyl polyol component comprising in substantial part one or more polyoxypropylene/polyoxyethylene random copolymers having an unsaturation of less than about 0.02 meq/g, and a primary hydroxyl content of less than 50 mol percent; and c) an effective amount of water as a blowing agent.
Claim 13
Dependent Claim
29 words
The cold molded polyurethane foam of claim 10 wherein said polyoxypropylene/polyoxyethylene random copolymer comprises in excess of about 70 weight of all polyoxyalkylene polyether polyol in said polyol component.
Claim 14
Dependent Claim
50 words
The cold molded polyurethane foam of claim 10 wherein said polyol component further comprises an amount of a polymer polyol and/or polymer modified polyol to provide a dispersed polymer solids content of from about 1 weight percent to about 25 weight percent based on the weight of the polyol component.
Claim 15
Dependent Claim
32 words
The cold molded polyurethane foam of claim 10 wherein at least one of said one or more polyoxypropylene/polyoxyethylene random copolymers has a primary hydroxyl content of less than about 35 mol percent.
Claim 16
Dependent Claim
29 words
The cold molded polyurethane foam of claim 10 wherein at least one of said one or more polyoxypropylene/polyoxyethylene random copolymers has an unsaturation of about 0.015 meq/g or less.
Claim 17
Dependent Claim
39 words
The cold molded polyurethane foam of claim 10 wherein said polyol component further comprises a high primary hydroxyl content polyoxypropylene/polyoxyethylene copolymer polyol, and wherein the average unsaturation of all low primary hydroxyl polyols is less than about 0.02 meq/g.
Claim 18
Dependent Claim
26 words
The cold molded polyurethane foam of claim 15 wherein the average unsaturation of all polyoxyalkylene polyols in said polyol component is less than about 0.02 meq/g.
Claim 19
Dependent Claim
26 words
The cold molded polyurethane foam of claim 15 wherein the average unsaturation of all polyoxyalkylene polyols in said polyol component is less than about 0.015 meq/g.
Claim 20
Dependent Claim
20 words
The cold molded polyurethane foam of claim 10 wherein said di- or polyisocyanate comprises TDI, MDI, or a mixture thereof.
Claim 21
Dependent Claim
90 words
A cold molded flexible polyurethane foam comprising the reaction product of an isocyanate component comprising TDI, MDI, or a mixture thereof, at an isocyanate index of from about 90 to about 110, with a polyol component comprising in substantial part one or more polyoxypropylene/polyoxyethylene copolymer polyols individually having an unsaturation of less than 0.02 meq/g and a primary hydroxyl content of 35 mol percent or less, said polyol component containing not more than 30% by weight of polyoxyalkylene polyols having a primary hydroxyl content of 70 mol percent or more.
Claim 22
Dependent Claim
90 words
A cold molded flexible polyurethane foam comprising the reaction product of an isocyanate component comprising TDI, MDI, or a mixture thereof, at an isocyanate index of from about 90 to about 110, with a polyol component comprising in substantial part one or more polyoxypropylene/polyoxyethylene copolymer polyols individually having an unsaturation of less than 0.02 meq/g and a primary hydroxyl content of 35 mol percent or less, said polyol component containing not more than 30% by weight of polyoxyalkylene polyols having a primary hydroxyl content of 70 mol percent or more.
Claim 23
Dependent Claim
52 words
The cold molded polyurethane foam of claim 19 wherein said polyol component comprises in excess of 90 weight percent of one or more polyoxypropylene/polyoxyethylene random copolymer polyols, said polyol component having an average unsaturation of less than about 0.015 meq/g and an average primary hydroxyl content of 35 mol percent or less.
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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) | 2000-09-15 | 2001-03-17 | 2001-09-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2004-09-15 | 2005-03-17 | 2005-09-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2008-09-15 | 2009-03-17 | 2009-09-16 | $7700.00 | Window Closed / Lapsed |