Patent US4751252A successfully refreshed from Google Patents.
US4751252A
Expired / Lapsed
US
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Combustion modified isocyanate useful for rim structural foams
Assignee: Bayer Corp
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Filing: 1987-05-14
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Granted: 1988-06-14
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Expires: 2007-05-14
Abstract
Abstract Polyisocyanate addition products, particularly polyurethane foams having improved flame resistance are obtained by reacting a combustion modified isocyanate with an isocyanate reactive component containing an isocyanate reactive material, a phosphorus containing combustion modifier and a blowing agent. The combustion modified isocyanate is made up of an organic polyisocyanate and a brominated diphenylether.
Inventors
- 👤 Jan L. R. Clatty
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 23:36
CPC Classifications
C; C08; C08G; C08G18/00; C08G18/06; C08G18/70; C08K; C08K5/00; C08K5/04; C08K5/06; C08G2120/00; Y; Y10; Y10S; Y10S521/00; Y10S521/906
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
19 words
A combustion modified isocyanate composition which is a mixture of (a) an organic polyisocyanate with (b) a brominated diphenylether.
Claim 2
Dependent Claim
19 words
A combustion modified isocyanate composition which is a mixture of (a) an organic polyisocyanate with (b) a brominated diphenylether.
Claim 3
Dependent Claim
11 words
The composition of claim 1 in which (b) is pentabromodiphenyl oxide.
Claim 4
Dependent Claim
19 words
The composition of claim 1 in which (b) is a mixture of tetrabromodiphenylether, pentabromodiphenylether, hexabromodiphenylether and higher brominated diphenylethers.
Claim 5
Dependent Claim
11 words
The composition of claim 1 in which (b) is a decabromodiphenyloxide.
Claim 6
Dependent Claim
11 words
The composition of claim 1 in which (a) is diphenylmethane diisocyanate.
Claim 7
Dependent Claim
27 words
The composition of claim 1 in which 10 to 20 parts by weight of component (b) are present for every 100 parts by weight of component (a).
Claim 8
Dependent Claim
28 words
A combustion modified foam produced by reacting the combustion modified isocyanate of claim 1 with a polyisocyanate reactive material, a phosphorus containing combustion modifier and a blowing agent.
Claim 9
Dependent Claim
28 words
A combustion modified foam produced by reacting the combustion modified isocyanate of claim 2 with a polyisocyanate reactive material, a phosphorus containing combustion modifier, and a blowing agent.
Claim 10
Dependent Claim
54 words
A process for the production of a combustion modified foam comprising reacting a first component (a) which is the combustion modified isocyanate of claim 1 with a second component (b) which is a component made up of an isocyanate reactive material, a phosphorus containing combustion modifier and a blowing agent by a RIM process.
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) | 1991-06-14 | 1991-12-14 | 1992-06-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1995-06-14 | 1995-12-14 | 1996-06-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1999-06-14 | 1999-12-14 | 2000-06-14 | $7700.00 | Window Closed / Lapsed |