Patent US2280272A successfully refreshed from Google Patents.
Patent US4232085A successfully refreshed from Google Patents.
US4232085A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Flexible polyurethane foam having a low flame spread index
Assignee: CARPENTER HOLDINGS Inc
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Filing: 1979-08-14
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Granted: 1980-11-04
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Expires: 1999-08-14
Abstract
Abstract A flexible polyurethane foam having a low flame spread index is produced by combining polyol (preponderantly diol and/or triol) with polyisocyanate (preponderantly diisocyanate) in the presence of a foaming catalyst and a blowing agent. By combining at least 75% by weight of pentabromoethyl benzene, based upon the weight of the polyol, a flame spread index less than 150 can be achieved for the resulting foam in the ASTM test E-162-76. Significantly, polyurethane foams having a flame spread index less than 25 have been produced with this invention.
Inventors
- 👤 William L. Carlstrom
- 👤 Gary L. Maechtle
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 21:55
CPC Classifications
C; C08; C08J; C08J9/00; C08J9/0014; C08J9/0019; C08J2375/00; C08J2375/04; Y; Y10; Y10S; Y10S521/00; Y10S521/906; Y10T; Y10T428/00; Y10T428/249921; Y10T428/249953; Y10T428/249987; Y10T428/249988; Y10T428/249989
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
64 words
A foam-forming composition for producing a flexible polyurethane foam having a low flame spread rating comprising: organic polyol consisting preponderantly of diol and/or triol; a foam-forming catalyst; a blowing agent; at least 75% (based upon the weight of said polyol) of pentabromoethyl benzene; and sufficient organic polyisocyanate, consisting predominantly of diisocyanate, to combine stoichiometrically with the said polyol to produce a flexible polyurethane foam.
Claim 2
Dependent Claim
64 words
A foam-forming composition for producing a flexible polyurethane foam having a low flame spread rating comprising: organic polyol consisting preponderantly of diol and/or triol; a foam-forming catalyst; a blowing agent; at least 75% (based upon the weight of said polyol) of pentabromoethyl benzene; and sufficient organic polyisocyanate, consisting predominantly of diisocyanate, to combine stoichiometrically with the said polyol to produce a flexible polyurethane foam.
Claim 3
Dependent Claim
31 words
A flexible polyurethane foam having a density of 4 to 50 pounds per cubic foot, fabricated by forming a polyurethane foam from the composition of claim 1 in an enclosed mold.
Claim 4
Dependent Claim
13 words
The foam-forming composition of claim 1 wherein the said catalyst is triethylene diamine.
Claim 5
Dependent Claim
17 words
The flexible polyurethane foam of claim 2 having a flame spread index (ASTM E-162-76) less than 150.
Claim 6
Dependent Claim
17 words
The flexible polyurethane foam of claim 4 having a flame spread index (ASTM E-162-76) less than 25.
Claim 7
Dependent Claim
66 words
A foam-forming composition for producing an integral-skinned, flexible polyurethane foam having a low flame spread rating comprising: organic polyol consisting preponderantly of diol and/or triol; a foam-forming catalyst; halogenated alkane blowing agent; at least 75% (based upon the weight of said polyol) of pentabromoethyl benzene; and sufficient organic polyisocyanate, consisting predominantly of diisocyanate, to combine stoichiometrically with the said polyol to produce a flexible polyurethane foam.
Claim 8
Dependent Claim
66 words
A foam-forming composition for producing an integral-skinned, flexible polyurethane foam having a low flame spread rating comprising: organic polyol consisting preponderantly of diol and/or triol; a foam-forming catalyst; halogenated alkane blowing agent; at least 75% (based upon the weight of said polyol) of pentabromoethyl benzene; and sufficient organic polyisocyanate, consisting predominantly of diisocyanate, to combine stoichiometrically with the said polyol to produce a flexible polyurethane foam.
Claim 9
Dependent Claim
34 words
An integral-skinned polyurethane foam having a density of 10 to 50 pounds per cubic foot; having an integral-skin; fabricated by forming a polyurethane foam from the composition of claim 6 in an enclosed mold.
Claim 10
Dependent Claim
17 words
The integral-skinned polyurethane foam of claim 7 having a flame spread index (ASTM E-162-76) less than 25.
Claim 11
Dependent Claim
85 words
A foam-forming composition for producing a high resiliency seating foam of flexible polyurethane having a low flame spread rating comprising: organic polyol consisting preponderantly of diol and/or triol; a foam-forming catalyst; water as a blowing agent; at least 75% (based upon the weight of said polyol) of pentabromoethyl benzene; and sufficient organic polyisocyanate, consisting predominantly of diisocyanate, to combine stoichiometrically with the said polyol to produce a flexible polyurethane foam and to react with at least a portion of said water to generate carbon dioxide.
Claim 12
Dependent Claim
85 words
A foam-forming composition for producing a high resiliency seating foam of flexible polyurethane having a low flame spread rating comprising: organic polyol consisting preponderantly of diol and/or triol; a foam-forming catalyst; water as a blowing agent; at least 75% (based upon the weight of said polyol) of pentabromoethyl benzene; and sufficient organic polyisocyanate, consisting predominantly of diisocyanate, to combine stoichiometrically with the said polyol to produce a flexible polyurethane foam and to react with at least a portion of said water to generate carbon dioxide.
Claim 13
Dependent Claim
32 words
A flexible seating polyurethane foam having a density of 4 to 40 pounds per cubic foot, fabricated by forming a polyurethane foam from the composition of claim 6 in an enclosed mold.
Claim 14
Dependent Claim
18 words
The flexible seating polyurethane foam of claim 10 having a flame spread index (ASTM E-162-76) less than 25.
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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) | 1983-11-04 | 1984-05-05 | 1984-11-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1987-11-04 | 1988-05-05 | 1988-11-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1991-11-04 | 1992-05-05 | 1992-11-04 | $7700.00 | Window Closed / Lapsed |