Patent US4367291A successfully refreshed from Google Patents.
US4367291A
Expired / Lapsed
US
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Reducing the flammability of flexible polyurethane foams
Assignee: OSI Specialties Inc
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Filing: 1981-07-01
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Granted: 1983-01-04
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Expires: 2001-07-01
Abstract
Abstract Combustibility properties of flexible polyurethane foams made with flame retardant additives are increased by incorporating into the foam-forming reaction mixture a combination of certain flame retardant surfactants and certain low molecular weight polyols.
Inventors
- 👤 Feyyaz O. Baskent
- 👤 Mark L. Bye
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 02:45
CPC Classifications
C; C08; C08J; C08J9/00; C08J9/0061; C08G; C08G18/00; C08G18/06; C08G18/28; C08G18/65; C08G18/66; C08G18/6666; C08G18/667; C08G18/6674; C08G2110/00; C08G2110/0008; C08G2110/0041; C08G2110/005; C08J2375/00; C08J2375/04; C08J2375/08; C08J2483/00
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
127 words
A process for the production of flame retardant flexible polyurethane foams from a reaction mixture comprising aromatic polyisocyanates, polyether polyols, and flame retardant additives, the improvement which comprises utilizing together, in the reaction mixture, from 1 to 2 weight percent of a surfactant of the formula: ##STR4## wherein n is an integer of from 1 to 8, and at least from 0.4 to 2.0 weight percent of at least one low molecular weight polyol of one of the formulae: (C.sub.a H.sub.2a (OH).sub.2,C.sub.b H.sub.2b-1 (OH).sub.3, and HO(C.sub.c H.sub.2c O).sub.d H wherein a is an integer of from 2 to 12, b is an integer of from 3 to 11, c is an integer of from 2 to 4, and d is an integer of from 2 to 4.
Claim 2
Dependent Claim
127 words
A process for the production of flame retardant flexible polyurethane foams from a reaction mixture comprising aromatic polyisocyanates, polyether polyols, and flame retardant additives, the improvement which comprises utilizing together, in the reaction mixture, from 1 to 2 weight percent of a surfactant of the formula: ##STR4## wherein n is an integer of from 1 to 8, and at least from 0.4 to 2.0 weight percent of at least one low molecular weight polyol of one of the formulae: (C.sub.a H.sub.2a (OH).sub.2,C.sub.b H.sub.2b-1 (OH).sub.3, and HO(C.sub.c H.sub.2c O).sub.d H wherein a is an integer of from 2 to 12, b is an integer of from 3 to 11, c is an integer of from 2 to 4, and d is an integer of from 2 to 4.
Claim 3
Dependent Claim
23 words
A process as in claim 1 wherein said surfactant has the formula: ##STR5## and where said low molecular weight polyol is dipropylene glycol.
Claim 4
Dependent Claim
16 words
The improved flame retardant flexible polyurethane foam produced by the process of claim 1 or 2.
Claim 5
Dependent Claim
95 words
A composition comprising from 1 to 2 parts by weight of a surfactant of the formula: ##STR6## wherein n is an integer of from 1 to 8, and from 0.4 to 2.0 parts by weight of at least one low molecular weight polyol of the formulae C.sub.a H.sub.2a (OH).sub.2, C.sub.b H.sub.2b-1 (OH).sub.3, and HO(C.sub.c H.sub.2c O).sub.d H, wherein a is an integer of from 2 to 12, b is an integer of from 3 to 11, c is an integer of from 2 to 4, and d is an integer of from 2 to 4.
Claim 6
Dependent Claim
95 words
A composition comprising from 1 to 2 parts by weight of a surfactant of the formula: ##STR6## wherein n is an integer of from 1 to 8, and from 0.4 to 2.0 parts by weight of at least one low molecular weight polyol of the formulae C.sub.a H.sub.2a (OH).sub.2, C.sub.b H.sub.2b-1 (OH).sub.3, and HO(C.sub.c H.sub.2c O).sub.d H, wherein a is an integer of from 2 to 12, b is an integer of from 3 to 11, c is an integer of from 2 to 4, and d is an integer of from 2 to 4.
Claim 7
Dependent Claim
23 words
A composition as in claim 4 wherein said surfactant has the formula: ##STR7## and wherein said low molecular weight polyol is dipropylene glycol.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1986-01-03 | 1986-07-05 | 1987-01-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1990-01-03 | 1990-07-05 | 1991-01-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1994-01-03 | 1994-07-05 | 1995-01-04 | $7700.00 | Window Closed / Lapsed |