US4216296A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Low smoke generating polyurethane foam
Assignee: J-M A/C PIPE Corp A DE CORP
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Filing: 1978-06-26
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Granted: 1980-08-05
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Expires: 1998-06-26
Abstract
Abstract A polyurethane foam composition is disclosed which has low smoke generation characteristics (i.e., a rating of less than 50 in the ASTM E-84 Tunnel Test). The composition comprises 80-100 parts by weight of poly(trichloro-oxybutylene) carbohydrate adduct, 0-20 parts by weight of an amine-based polyol, 80-155 parts by weight of a polyalkylene polyphenyl isocyanate, 10-50 parts by weight of a fluorcarbon foaming agent, 0.3-3.0 parts by weight of a surfactant, and 0.005-4.0 parts of a catalyst. The foam finds use as a thermal insulation, particularly pipe insulation.
Inventors
- 👤 David G. Wernsing
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 01:15
CPC Classifications
C; C08; C08G; C08G18/00; C08G18/06; C08G18/28; C08G18/40; C08G18/48; C08G18/50; C08G18/5003; C08G18/5006; C08G18/5009; Y; Y10; Y10S; Y10S521/00; Y10S521/903
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
42 words
A composition for the formation of polyurethane foam which has low smoke generation characteristics and which comprises, in parts by weight: ______________________________________
poly(trichloro-oxybutylene)
carbohydrate adduct 80-100
amine-based polyol 1-20
polyalkylene polyphenyl isocyanate
80-155
fluorocarbon foaming agent
10-50
surfactant 0.3-3.0
catalyst 0.005-4.0
______________________________________
Claim 2
Dependent Claim
42 words
A composition for the formation of polyurethane foam which has low smoke generation characteristics and which comprises, in parts by weight: ______________________________________
poly(trichloro-oxybutylene)
carbohydrate adduct 80-100
amine-based polyol 1-20
polyalkylene polyphenyl isocyanate
80-155
fluorocarbon foaming agent
10-50
surfactant 0.3-3.0
catalyst 0.005-4.0
______________________________________
Claim 3
Dependent Claim
14 words
A composition as in claim 1 wherein said isocyanate is a polymethyl polyphenyl isocyanate.
Claim 4
Dependent Claim
18 words
A composition as in claim 1 wherein said surfactant is a silicone glycol copolymer or a polyalkyleneoxy glycol.
Claim 5
Dependent Claim
38 words
A composition as in claim 1 comprising, in parts by weight: ______________________________________
poly(trichloro-oxybutylene)
carbohydrate adduct 98.6
amine-based polyol 10.0
polymethyl polyphenyl isocyanate
106.9
fluorocarbon foaming agent
31.2
silicone glycol copolymer surfactant
1.2
dimethyl cyclohexyl amine catalyst
2.0
______________________________________
Claim 6
Dependent Claim
10 words
A polyurethane foam composed of the composition of claim 1.
Claim 7
Dependent Claim
10 words
A polyurethane foam composed of the composition of claim 4.
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) | 1983-08-05 | 1984-02-04 | 1984-08-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1987-08-05 | 1988-02-04 | 1988-08-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1991-08-05 | 1992-02-04 | 1992-08-05 | $7700.00 | Window Closed / Lapsed |