Patent US4866102A successfully refreshed from Google Patents.
US4866102A
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Moldable energy absorbing rigid polyurethane foams
Assignee: BASF Corp
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Filing: 1987-11-20
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Granted: 1989-09-12
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Expires: 2007-11-20
Abstract
Abstract Moldable energy absorbing rigid polyurethane foams are prepared by reacting a polyoxyalkylene polyether polyol containing therein a graft polymer dispersion, an alkylene oxide adduct of an aromatic amine in the presence of a crosslinking agent with an organic polyisocyanate. Alternatively, the aromatic amine may be replaced with an alkylene oxide adduct of pentaerythritol, ethylenediamine, α-methylglucoside, sorbitol and sucrose. The products are useful in various automobile body parts.
Inventors
- 👤 Edward R. Pray
- 👤 John R. Stoll
- 👤 Peter F. Plank
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 17:52
CPC Classifications
C; C08; C08G; C08G18/00; C08G18/06; C08G18/28; C08G18/40; C08G18/48; C08G18/4009; C08G18/4072; C08G18/63; C08G18/635; C08G18/65; C08G18/6505; C08G18/6511; C08G18/6517; C08G18/6523; C08G18/6535; C08G18/6552; C08G18/6558; C08G2110/00; C08G2110/0025
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
102 words
A moldable energy absorbing rigid foam having a compresison strength at 50 percent deflection of less than about 28 psi, and comprising the reaction product of (a) a polyoxyalkylene polyether polyol containing therein a graft polymer dispersion, (b) an alkylene oxide adduct of touenediamine or methylenedianiline having a molecular weight range of from about 400 to about 800, (c) a crosslinking agent selected from the group consisting of glycerine, trimethylolpropane and an alkylene oxide adduct of ethylene diamine containing from about 4 to about 8 alkylene oxide units, (d) an organic polyisocyanate, and (e) water, catalyst surfactant and an additional blowing agent.
Claim 2
Dependent Claim
102 words
A moldable energy absorbing rigid foam having a compresison strength at 50 percent deflection of less than about 28 psi, and comprising the reaction product of (a) a polyoxyalkylene polyether polyol containing therein a graft polymer dispersion, (b) an alkylene oxide adduct of touenediamine or methylenedianiline having a molecular weight range of from about 400 to about 800, (c) a crosslinking agent selected from the group consisting of glycerine, trimethylolpropane and an alkylene oxide adduct of ethylene diamine containing from about 4 to about 8 alkylene oxide units, (d) an organic polyisocyanate, and (e) water, catalyst surfactant and an additional blowing agent.
Claim 3
Dependent Claim
29 words
The foam of claim 1 wherein the amine adduct (b) is from about 5 weight percent to about 40 weight percent based on the total weight of the foam.
Claim 4
Dependent Claim
105 words
A process for the preparation of a modable energy absorbing rigid foam having a compression strength at 50 percent deflection of less than about 28 psi, and comprising reacting (a) a polyoxyalkylene polyether polyol containing therein a graft polymer dispersion, (b) an alkylene oxide adduct of toluenediamine or methylenedianiline having a molecular weight range of from about 400 to about 800, (c) a crosslinking agent selected from the group consisting of glycerine, trimethylolpropane and an alkylene oxide adduct of ethylene diamine containing from about 4 to about 8 alkylene oxdie units, (d) an aromatic organic polyisocyanate, and (e) water, catalyst, surfactant and additional blowing agent.
Claim 5
Dependent Claim
105 words
A process for the preparation of a modable energy absorbing rigid foam having a compression strength at 50 percent deflection of less than about 28 psi, and comprising reacting (a) a polyoxyalkylene polyether polyol containing therein a graft polymer dispersion, (b) an alkylene oxide adduct of toluenediamine or methylenedianiline having a molecular weight range of from about 400 to about 800, (c) a crosslinking agent selected from the group consisting of glycerine, trimethylolpropane and an alkylene oxide adduct of ethylene diamine containing from about 4 to about 8 alkylene oxdie units, (d) an aromatic organic polyisocyanate, and (e) water, catalyst, surfactant and additional blowing agent.
Claim 6
Dependent Claim
29 words
The process of claim 3 wherein the amine adduct (b) is from about 5 weight percent to about 40 weight percent based on the total weight of the foam.
Claim 7
Dependent Claim
96 words
A moldable energy absorbing rigid foam comprising the reaction product of (a) a polyoxyalkylene polyether polyol containing therein a graft polymer dispersion, (b) an alkylene oxide adduct of compounds selected from the group consisting of pentaerythritol, ethylenediamine, α-methylglucoside, sorbitol and sucrose having a molecular weight of from about 250 to about 800 (c) a crosslinking agent selected from the group consisting of glycerine, trimethylolpropane and an alkylene oxide adduct of ethylene diamine containing from about 4 to about 8 alkylene oxide units, (d) an organic polyisocyanate, and (e) water, catalyst, surfactant and an additional blowing agent.
Claim 8
Dependent Claim
96 words
A moldable energy absorbing rigid foam comprising the reaction product of (a) a polyoxyalkylene polyether polyol containing therein a graft polymer dispersion, (b) an alkylene oxide adduct of compounds selected from the group consisting of pentaerythritol, ethylenediamine, α-methylglucoside, sorbitol and sucrose having a molecular weight of from about 250 to about 800 (c) a crosslinking agent selected from the group consisting of glycerine, trimethylolpropane and an alkylene oxide adduct of ethylene diamine containing from about 4 to about 8 alkylene oxide units, (d) an organic polyisocyanate, and (e) water, catalyst, surfactant and an additional blowing agent.
Claim 9
Dependent Claim
28 words
The foam of claim 5 wherein the adducts of (b) are about 5 weight percent to about 40 weight percent based on the total weight of the foam.
References Cited (Backward Citations)
US4689354A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1992-09-11 | 1993-03-13 | 1993-09-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1996-09-11 | 1997-03-13 | 1997-09-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2000-09-11 | 2001-03-13 | 2001-09-12 | $7700.00 | Window Closed / Lapsed |