Patent US4546117A successfully refreshed from Google Patents.
US4546117A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Combustion modified flexible polyurethane foam
Assignee: Bayer Corp
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Filing: 1983-04-22
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Granted: 1985-10-08
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Expires: 2003-04-22
Abstract
Abstract The present invention is directed to a combustion modified flexible polyurethane foam produced by reacting: (A) an organic polyisocyanate, (B) a polyether polyol selected from the group consisting of (i) a polymer polyol, and (ii) mixtures of said polymer polyol and a polyoxyalkylene triol having an OH number of from about 25 to about 40, (C) from about 80 to about 150 parts by weight of hydrated alumina of an average particle size of from about 1.5 to about 5 microns, (D) from about 4 to about 12 parts by weight of antimony trioxide, (E) from about 5 to about 30 parts by weight of decabromodiphenyl oxide, (F) from about 15 to about 30 parts by weight of a halogenated phosphate ester, (G) from 0 to about 5 parts by weight of a char former, (H) from about 1.5 to about 3.5 parts by weight of water, and, (I) from 0 to about 20 parts by weight of an organic blowing agent, said parts by weight of components (C) through (I) being based on 100 parts by weight of component (B), the ratio of components being such that the isocyanate index is from about 105 to about 115.
Inventors
- 👤 John F. Szabat
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 10:19
CPC Classifications
C; C08; C08J; C08J9/00; C08J9/0066; C08G; C08G18/00; C08G18/06; C08G18/28; C08G18/40; C08G18/4009; C08G18/4072; C08G18/63; C08G18/632; C08J9/0014; C08J2375/00; C08J2375/04
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
215 words
A combustion modified flexible polyurethane foam produced by reacting: (A) an organic polyisocyanate, (B) a polyether polyol selected from the group consisting of (i) a polymer polyol prepared by polymerizing an ethylenically unsaturated monomer or monomers in a relatively high molecular weight organic compound containing at least two hydroxyl groups, and (ii) mixtures of said polymer polyol and a polyoxyalkylene triol having an OH number of from about 25 to about 40, (C) from about 80 to about 150 parts by weight of hydrated alumina of an average particle size of from about 1.5 to about 5 microns, (D) from about 4 to about 12 parts by weight of antimony trioxide, (E) from about 5 to about 30 parts by weight of decabromodiphenyl oxide, (F) from about 15 to about 30 parts by weight of a halogenated phosphate ester, (G) from 0 to about 5 parts by weight of a char former, (H) from about 1.5 to about 3.5 parts by weight of water, and (I) from 0 to about 20 parts by weight of an organic blowing agent, said parts by weight of components (C) through (I) being based on 100 parts by weight of component (B), the ratio of components being such that the isocyanate index is from about 105 to about 115.
Claim 2
Dependent Claim
215 words
A combustion modified flexible polyurethane foam produced by reacting: (A) an organic polyisocyanate, (B) a polyether polyol selected from the group consisting of (i) a polymer polyol prepared by polymerizing an ethylenically unsaturated monomer or monomers in a relatively high molecular weight organic compound containing at least two hydroxyl groups, and (ii) mixtures of said polymer polyol and a polyoxyalkylene triol having an OH number of from about 25 to about 40, (C) from about 80 to about 150 parts by weight of hydrated alumina of an average particle size of from about 1.5 to about 5 microns, (D) from about 4 to about 12 parts by weight of antimony trioxide, (E) from about 5 to about 30 parts by weight of decabromodiphenyl oxide, (F) from about 15 to about 30 parts by weight of a halogenated phosphate ester, (G) from 0 to about 5 parts by weight of a char former, (H) from about 1.5 to about 3.5 parts by weight of water, and (I) from 0 to about 20 parts by weight of an organic blowing agent, said parts by weight of components (C) through (I) being based on 100 parts by weight of component (B), the ratio of components being such that the isocyanate index is from about 105 to about 115.
Claim 3
Dependent Claim
57 words
The foam of Claim 1 wherein component (C) is used in an amount of from about 100 to about 140 parts by weight, component (G) is used in an amount of from about 1 to 2.5 parts by weight, and component (H) is used in an amount of from about 2 to about 3 parts by weight.
Claim 4
Dependent Claim
23 words
The foam of claim 2 wherein component (C) is used in an amount of from about 100 to about 120 parts by weight.
Claim 5
Dependent Claim
12 words
The foam of claim 1 wherein the polyisocyanate is a tolylene diisocyanate.
Claim 6
Dependent Claim
33 words
The foam of claim 1 wherein component (B) is a mixture of a polymer polyol and a polyoxyalkylene triol based on glycerin and having a propylene oxide internal block and ethylene oxide tipping.
Claim 7
Dependent Claim
21 words
The foam of claim 5 wherein the average particle size of component (C) is from about 3 to about 4 microns.
Claim 8
Dependent Claim
11 words
The foam of claim 6, wherein component (F) is tetrakis-(2-chloroethyl)-ethylene diphosphate.
Claim 9
Dependent Claim
11 words
The foam of claim 6 wherein component (D) is tetrakis-(2-chloroethyl)-2-bis-(chloromethyl)-propylene diphosphate.
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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) | 1988-10-07 | 1989-04-08 | 1989-10-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-10-07 | 1993-04-08 | 1993-10-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-10-07 | 1997-04-08 | 1997-10-08 | $7700.00 | Window Closed / Lapsed |