US4076657A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Polyurethane smoke suppression additive
Assignee: Syntex USA LLC
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Filing: 1976-03-12
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Granted: 1978-02-28
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Expires: 1996-03-12
Abstract
Abstract Polyurethane plastics having improved smoke supression properties due to the incorporation therein of small amount of dicyclopentadienyl iron, or derivatives thereof, in chemically uncombined form. The improved polyurethane plastics are prepared by simple physical admixture of the dicyclopentadienyl iron, or derivatives thereof, in the plastic.
Inventors
- 👤 John J. Kracklauer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 23:02
CPC Classifications
C; C08; C08J; C08J9/00; C08J9/0061; C08J9/0014; C08J9/0052; C08K; C08K5/00; C08K5/56; C08J2375/00; C08J2375/04; C08J2443/00; Y; Y10; Y10S; Y10S521/00; Y10S521/903; Y10S521/906
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
110 words
A polyurethane foam plastic, having improved smoke suppression properties, consisting essentially of a polyurethane foam plastic containing in chemically uncombined form about from 0.1 to 1%, by wt., based on the polyurethane polymer content of said plastic, of a dicyclopentadienyl iron compound selected from the group consisting of monoalkyl dicyclopentadienyl iron; dialkyl dicyclopentadienyl iron; mono alkanoyldicyclopentadienyl iron dialkanoyldicyclopentadienyl iron; ferrocene condensation dimers and polymers with aldehydes or ketones; vinyl ferrocene copolymers with vinyl chloride, acrylic acid, methyl methacrylate, butadiene, or cyclopentane; and mixtures thereof, and wherein as used herein above the terms alkyl and alkanoyl refer, respectively, to alkyl groups and alkanoyl groups having from one through 20 carbon atoms.
Claim 2
Dependent Claim
110 words
A polyurethane foam plastic, having improved smoke suppression properties, consisting essentially of a polyurethane foam plastic containing in chemically uncombined form about from 0.1 to 1%, by wt., based on the polyurethane polymer content of said plastic, of a dicyclopentadienyl iron compound selected from the group consisting of monoalkyl dicyclopentadienyl iron; dialkyl dicyclopentadienyl iron; mono alkanoyldicyclopentadienyl iron dialkanoyldicyclopentadienyl iron; ferrocene condensation dimers and polymers with aldehydes or ketones; vinyl ferrocene copolymers with vinyl chloride, acrylic acid, methyl methacrylate, butadiene, or cyclopentane; and mixtures thereof, and wherein as used herein above the terms alkyl and alkanoyl refer, respectively, to alkyl groups and alkanoyl groups having from one through 20 carbon atoms.
Claim 3
Dependent Claim
36 words
The composition of claim 1 wherein said polyurethane plastic is rigid polyurethane foam and contains about from 0.2 to 0.8%, by wt., based on the polyurethane polymer content of said plastic, of said dicyclopentadienyl iron compound.
Claim 4
Dependent Claim
36 words
The composition of claim 1 wherein said polyurethane plastic is flexible polyurethane foam and contains about from 0.2 to 0.8%, by wt., based on the polyurethane polymer content of said plastic, of said dicyclopentadienyl iron compound.
Claim 5
Dependent Claim
13 words
The composition of claim 1 wherein said dicyclopentadienyl iron compound is 2,2-poly(dicyclopentadienyl iron)-propane.
Claim 6
Dependent Claim
71 words
The composition of claim 1 wherein said dicyclopentyldienyl iron compound is selected from the group consisting of mono lower alkyl dicyclopentyldienyl iron; di (lower alkyl) dicyclopentyldienyl iron; mono lower alkanoyl dicyclopentyldienyl iron; di lower alkanoyl dicyclopentyldienyl iron and ferrocene condensation dimers and polymers with aldehydes or ketones and wherein the terms lower alkyl and lower alkanoyl refer, respectively, to alkyl groups and alkanoyl groups having from one through eight carbon atoms.
Claim 7
Dependent Claim
36 words
The composition of claim 5 wherein said polyurethane plastic is rigid polyurethane foam and contains about from 0.2 to 0.8%, by wt., based on the polyurethane polymer content of said plastic, of said dicyclopentadienyl iron compound.
Claim 8
Dependent Claim
36 words
The composition of claim 5 wherein said polyurethane plastic is flexible polyurethane foam and contains about from 0.2 to 0.8%, by wt., based on the polyurethane polymer content of said plastic, of said dicyclopentadienyl iron compound.
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) | 1981-02-27 | 1981-08-29 | 1982-02-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-02-27 | 1985-08-29 | 1986-02-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-02-27 | 1989-08-29 | 1990-02-28 | $7700.00 | Window Closed / Lapsed |