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US4452923A
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Polymer-modified polyols
Assignee: Huntsman International LLC
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Filing: 1982-07-20
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Granted: 1984-06-05
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Expires: 2002-07-20
Abstract
Abstract A high-strength polymer-modified polyol comprises a polyol and from 40 to 80% by weight of the reaction product of a polyisocyanate and a tertiary-N-polyolamine based on the combined weight of the polyol and reaction product. Also included are methods of forming the polymer-modified polyol; a polymer-modified polyol obtained by dilution of the high strength polymer-modified polyol; the use of the polymer-modified polyols in the manufacture of polyurethane products and the polyurethane products so obtained. The polymer-modified polyols are particularly useful for preparing highly resilient flexible foams.
Inventors
- 👤 William G. Carroll
- 👤 Peter Farley
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 06:47
CPC Classifications
C; C08; C08G; C08G18/00; C08G18/06; C08G18/08; C08G18/0838; C08G18/0842; C08G18/0861; C08G18/0871; C08G18/0876; C08G18/28; C08G18/30; C08G18/32; C08G18/3271; C08G18/3278; C08G18/3281; C08G18/40; C08G18/409
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
90 words
A polymer-modified polyol obtained by reacting a polyisocyanate with a tertiary-N-polyolamine in the presence of a first polyol in amounts such that the weight of the reaction product of the polyisocyanate and polyolamine is from 40 to 80% of the combined weight of the reaction product and first polyol and subsequently diluting the reaction product with a second polyol, which is the same as or different to the first polyol, to less than 40% by weight of the reaction product on the combined weight of the reaction product and polyols.
Claim 2
Dependent Claim
90 words
A polymer-modified polyol obtained by reacting a polyisocyanate with a tertiary-N-polyolamine in the presence of a first polyol in amounts such that the weight of the reaction product of the polyisocyanate and polyolamine is from 40 to 80% of the combined weight of the reaction product and first polyol and subsequently diluting the reaction product with a second polyol, which is the same as or different to the first polyol, to less than 40% by weight of the reaction product on the combined weight of the reaction product and polyols.
Claim 3
Dependent Claim
25 words
A polymer-modified polyol according to claim 1 in which the first polyol is a polyoxyalkylene polyol having a molecular weight of from 1,000 to 10,000.
Claim 4
Dependent Claim
26 words
A polymer-modified polyol according to claim 1 in which the tertiary-N-polyolamine is a trialkanolamine in which the alkyl moieties contain from 1 to 4 carbon atoms.
Claim 5
Dependent Claim
35 words
A polymer-modified polyol according to claim 1 in which the reaction product is subsequently diluted to 1 to 15% by weight of the reaction product on the combined weight of the reaction product and polyols.
Claim 6
Dependent Claim
69 words
In a method of making a polyurethane product in which a polyisocyanate is reacted with a polyol, the improvement which comprises using as the polyol component a polymer-modified polyol obtained by dilution of the polymer-modified polyol as claimed in claim 1 with the same or a different polyol so that the reaction product is less than 40% by weight of the combined weight of the reaction product and polyol.
Claim 7
Dependent Claim
16 words
A method according to claim 5 in which the polyurethane product is a flexible polyurethane foam.
Claim 8
Dependent Claim
9 words
Polyurethane products obtained by the method of claim 5.
Claim 9
Independent Claim
102 words
A method of forming a polymer-modified polyol which comprises the step of (a) reacting a polyisocyanate with a tertiary-N-polyolamine in the presence of a first polyol in amounts such that the weight of the reaction product of the polyisocyanate and polyolamine is from 40 to 80% of the combined weight of the reaction product and first polyol, and (b) subsequently diluting the reaction product obtained in step (a) with a second polyol, which is the same or different to the first polyol, to less than 40% by weight of the reaction product on the combined weight of the reaction product and polyols.
Claim 10
Independent Claim
102 words
A method of forming a polymer-modified polyol which comprises the step of (a) reacting a polyisocyanate with a tertiary-N-polyolamine in the presence of a first polyol in amounts such that the weight of the reaction product of the polyisocyanate and polyolamine is from 40 to 80% of the combined weight of the reaction product and first polyol, and (b) subsequently diluting the reaction product obtained in step (a) with a second polyol, which is the same or different to the first polyol, to less than 40% by weight of the reaction product on the combined weight of the reaction product and polyols.
Claim 11
Dependent Claim
43 words
A method according to claim 8 in which the polyisocyanate and polyolamine are mixed together in the presence of the first polyol in amounts such that the ratio of isocyanate groups to hydroxyl groups supplied by the polyolamine is from 0.33:1 to 1:1.
Claim 12
Independent Claim
121 words
A method of forming a polymer-modified polyol which comprises the steps of (a) reacting a polyisocyanate with a tertiary-N-polyolamine in the presence of a polyol; (b) adding more of the same or a different polyisocyanate; and (c) optionally adding before or after step (b) more of the same or a different polyol to reduce the concentration of the reaction product so formed; the total amount of polyisocyanate used being such that the ratio of isocyanate groups to hydroxyl groups supplied by the polyolamine is from 0.33:1 and the combined weight of the total polyisocyanate and polyolamine used being from 40 to 80% of the combined weight of the polyisocyanate, polyolamine and the polyol discounting the polyol optionally added in step (c).
Claim 13
Independent Claim
121 words
A method of forming a polymer-modified polyol which comprises the steps of (a) reacting a polyisocyanate with a tertiary-N-polyolamine in the presence of a polyol; (b) adding more of the same or a different polyisocyanate; and (c) optionally adding before or after step (b) more of the same or a different polyol to reduce the concentration of the reaction product so formed; the total amount of polyisocyanate used being such that the ratio of isocyanate groups to hydroxyl groups supplied by the polyolamine is from 0.33:1 and the combined weight of the total polyisocyanate and polyolamine used being from 40 to 80% of the combined weight of the polyisocyanate, polyolamine and the polyol discounting the polyol optionally added in step (c).
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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) | 1987-06-05 | 1987-12-05 | 1988-06-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-06-05 | 1991-12-05 | 1992-06-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-06-05 | 1995-12-05 | 1996-06-05 | $7700.00 | Window Closed / Lapsed |