Patent US4384052A successfully refreshed from Google Patents.
US4384052A
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US
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Polyurethanes produced from an adduct of an organic polyisocyanate and certain amines
Assignee: BASF Corp
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Filing: 1981-06-08
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Granted: 1983-05-17
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Expires: 2001-06-08
Abstract
Abstract Reaction products of an organic polyisocyanate with a reactive diamine such as bis(4-aminocyclohexyl)methane and isophorone diamine, prepared at a temperature of between 135° C. and 200° C., are used to prepare polyurethanes useful for comfort cushioning applications such as automotive seating, furniture, mattresses, and large automotive body panels.
Inventors
- 👤 Robert L. McBrayer
- 👤 John G. Demou
- 👤 Peter T. Kan
- 👤 William E. Volz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 08:44
CPC Classifications
C; C08; C08G; C08G18/00; C08G18/06; C08G18/70; C08G18/72; C08G18/80; C08G18/8003; C08G18/8006; C08G18/8038; Y; Y10; Y10S; Y10S521/00; Y10S521/904
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
144 words
A polyurethane molded foam or elastomer product prepared in the presence of or in the absence of a blowing agent by the reaction of a polyol with an organic polyisocyanate composition comprising the reaction product of (a) an organic polyisocyanate and (b) 0.5 percent by weight to 5 percent by weight of a reactive diamine selected from the group consisting of (I) isophorone diamine and (II) a reactive diamine of the formula: ##STR3## wherein R is H or alkyl of 1 to 4 carbon atoms and A and A' are NH 2 or H with the proviso that in each ring either A or A' is NH 2 , not both, and when A or A' is NH 2 , then the R attached to that carbon atom is H, said reaction product prepared at a temperature of between 135° C. and 200° C.
Claim 2
Dependent Claim
144 words
A polyurethane molded foam or elastomer product prepared in the presence of or in the absence of a blowing agent by the reaction of a polyol with an organic polyisocyanate composition comprising the reaction product of (a) an organic polyisocyanate and (b) 0.5 percent by weight to 5 percent by weight of a reactive diamine selected from the group consisting of (I) isophorone diamine and (II) a reactive diamine of the formula: ##STR3## wherein R is H or alkyl of 1 to 4 carbon atoms and A and A' are NH 2 or H with the proviso that in each ring either A or A' is NH 2 , not both, and when A or A' is NH 2 , then the R attached to that carbon atom is H, said reaction product prepared at a temperature of between 135° C. and 200° C.
Claim 3
Dependent Claim
10 words
The product of claim 1 wherein the diamine is bis(4-aminocyclohexyl)methane.
Claim 4
Dependent Claim
11 words
The product of claim 1 wherein the diamine is isophorone diamine.
Claim 5
Dependent Claim
12 words
The product of claim 1 wherein the organic polyisocyanate is toluene diisocyanate.
Claim 6
Dependent Claim
17 words
The product of claim 1 wherein the diamine is bis(4-aminocyclohexyl)methane and the organic polyisocyanate is toluene diisocyanate.
Claim 7
Dependent Claim
18 words
The product of claim 1 wherein the diamine is isophorone diamine and the organic polyisocyanate is toluene diisocyanate.
Claim 8
Dependent Claim
11 words
The product of claim 2 wherein the blowing agent is water.
Claim 9
Dependent Claim
25 words
The product of claim 2 wherein the polyol has an equivalent weight of from 500 to 5000 and a functionality of from 2 to 4.
Claim 10
Dependent Claim
17 words
The product of claim 1 wherein the diamine is bis(4-aminocyclohexyl)methane and the organic polyisocyanate is 4,4'-diphenylmethane diisocyanate.
Claim 11
Dependent Claim
13 words
The composition of claim 1 prepared in the presence of a blowing agent.
References Cited (Backward Citations)
DE1568017A1
Cited
US3824266A
Cited
US3903126A
Cited
US4147714A
Cited
US4127599A
Cited
US4210728A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1986-05-16 | 1986-11-15 | 1987-05-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1990-05-16 | 1990-11-15 | 1991-05-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1994-05-16 | 1994-11-15 | 1995-05-17 | $7700.00 | Window Closed / Lapsed |