Patent FR732750A successfully refreshed from Google Patents.
US4049618A
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Polyvinyl chloride composition containing ferrocene smoke suppressant additives
Assignee: Syntex USA LLC
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Filing: 1974-09-05
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Granted: 1977-09-20
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Expires: 1994-09-05
Abstract
Abstract The use of dicyclopentadienyl iron, or derivatives thereof, in physical mixture with polyvinyl chloride plastics to produce polyvinyl chloride plastic having reduced smoke generating properties.
Inventors
- 👤 John J. Kracklauer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 10:02
CPC Classifications
C; C08; C08K; C08K5/00; C08K5/56; Y; Y10; Y10S; Y10S260/00; Y10S260/43; Y10S521/00; Y10S521/903
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
121 words
A polyvinyl chloride plastic containing as a smoke suppression additive a dicyclopentadienyl iron compound incorporated in said plastic in chemically uncombined form and in smoke reducing effective amounts of about from 0.1 to about 1.0%, by weight, based on the polyvinyl chloride polymer content of said plastic, and wherein said dicyclopentadienyl iron compound is selected from the group consisting of dicyclopentadienyl iron, monoalkyldicyclopentadienyl iron; dialkyldicyclopentadienyl iron, monoalkanoyldicyclopentadienyl iron; dialkanoyldicyclopentadienyl iron; the dimer and polymer reaction products of dicyclopentadienyl iron, and alkyl substituted derivatives thereof, with aldehydes or ketones; and mixtures thereof, and wherein as used with respect to said dicyclopentadienyl iron compounds, the terms alkyl and alkanoyl refer to alkyl groups and alkanoyl groups having from one to eight carbon atoms.
Claim 2
Dependent Claim
121 words
A polyvinyl chloride plastic containing as a smoke suppression additive a dicyclopentadienyl iron compound incorporated in said plastic in chemically uncombined form and in smoke reducing effective amounts of about from 0.1 to about 1.0%, by weight, based on the polyvinyl chloride polymer content of said plastic, and wherein said dicyclopentadienyl iron compound is selected from the group consisting of dicyclopentadienyl iron, monoalkyldicyclopentadienyl iron; dialkyldicyclopentadienyl iron, monoalkanoyldicyclopentadienyl iron; dialkanoyldicyclopentadienyl iron; the dimer and polymer reaction products of dicyclopentadienyl iron, and alkyl substituted derivatives thereof, with aldehydes or ketones; and mixtures thereof, and wherein as used with respect to said dicyclopentadienyl iron compounds, the terms alkyl and alkanoyl refer to alkyl groups and alkanoyl groups having from one to eight carbon atoms.
Claim 3
Dependent Claim
45 words
The product according to claim 1 wherein said dicyclopentadienyl iron compound is selected from the group consisting of dicyclopentadienyl iron; ethyldicyclopentadienyl iron; n-butyldicyclopentadienyl iron; diethyldicyclopentadienyl iron; di-n-butyldicyclopentadienyl iron; acetyldicyclopentadienyl iron; butyryldicyclopentadienyl iron; diacetyldicyclopentadienyl iron; dibutyryldicyclopentadienyl iron; 2,2-di(ethyldicyclopentadienyl iron)-propane; di(butyldicyclopentadienyl iron)-methane; di(dicyclopentadienyl iron)-methane; and mixtures thereof.
Claim 4
Dependent Claim
22 words
The polyvinyl chloride plastic of claim 2, wherein said dicyclopentadienyl iron compound is selected from dicyclopentadienyl iron, ethyldicyclopentadienyl iron, and n-butyldicyclopentadienyl iron.
Claim 5
Dependent Claim
14 words
The product according to claim 3 wherein said dicyclopentadienyl iron compound is dicyclopentadienyl iron.
Claim 6
Dependent Claim
21 words
The product according to claim 4 wherein said smoke reducing effective amount is from about 0.25 to about 0.5% by weight.
Claim 7
Dependent Claim
16 words
The composition of claim 4 wherein said polyvinyl chloride plastic is rigid polyvinyl chloride plastic. uncombined
Claim 8
Dependent Claim
69 words
Polyvinyl chloride compositions which contain in chemically unconbined form 0.1 to 1%, by wt., based on the polyvinyl chloride polymer content, of an additive selected from the group consisting of ferrocene, ferrocene substituted with at least one alkyl group containing one to eight carbon atoms and keto ferrocene having at least one alkyl group with one to seven carbon atoms joined to the ferrocene nucleus via a CO- group.
Claim 9
Dependent Claim
69 words
Polyvinyl chloride compositions which contain in chemically unconbined form 0.1 to 1%, by wt., based on the polyvinyl chloride polymer content, of an additive selected from the group consisting of ferrocene, ferrocene substituted with at least one alkyl group containing one to eight carbon atoms and keto ferrocene having at least one alkyl group with one to seven carbon atoms joined to the ferrocene nucleus via a CO- group.
Claim 10
Dependent Claim
23 words
The compositions of claim 7 wherein said compositions contain 0.25 to 0.5%, by wt., based on the polyvinyl chloride content, of said additive.
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) | 1980-09-19 | 1981-03-21 | 1981-09-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-09-19 | 1985-03-21 | 1985-09-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-09-19 | 1989-03-21 | 1989-09-20 | $7700.00 | Window Closed / Lapsed |