Patent US4605684A successfully refreshed from Google Patents.
US4605684A
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US
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Antistatic polyurethane foam
Assignee: GFC FOAM Corp 100 CENTURY ROAD PARAMUS NJ 07652 A CORP OF DE
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Filing: 1985-10-31
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Granted: 1986-08-12
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Expires: 2005-10-31
Abstract
Abstract Flexible polyurethane foams having improved electrostatic properties are provided by incorporating into the reaction mixture before foaming an antistatic additive composition comprising a blend of a quaternary ammonium compound selected from the group consisting of soya dimethyl ethyl ammonium ethylsulfate, soya dimethyl ethyl ammonium phosphate, and mixtures thereof, and a plasticizer composition selected from the group consisting of N-ethyl-o- and p-toluene sulfonamide, o- and p-toluene sulfonamide, and tetrakis (2 chloroethyl) ethylene diphosphate, and mixtures thereof.
Inventors
- 👤 Michael P. Pcolinsky, Jr.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 17:49
CPC Classifications
C; C08; C08K; C08K5/00; C08K5/36; C08K5/43; C08K5/16; C08K5/17; C08K5/19; C08K5/49; C08K5/51; C08K5/52; C08K5/521
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
124 words
In the method of preparing a flexible polyurethane foam from a polyol and a polyisocyanate the improvement which comprises adding to the foam-forming composition from about five to about 25 parts by weight per 100 parts by weight of polyol of an antistatic additive composition comprising one part by weight of a quaternary ammonium compound selected from the group consisting of soya dimethyl ethyl ammonium ethylsulfate, soya dimethyl ethyl ammonium ethylphosphate, and mixtures thereof and from about 0.4 to about 3 parts by weight of a plasticizer composition selected from the group consisting of N-ethyl-o- and p-toluene sulfonamide, o- and p-toluene sulfonamide, tetrakis (2 chloroethyl) ethylene diphosphate, and mixtures thereof, to provide a foam having a reduced tendency to develop and accumulate electrostatic charges.
Claim 2
Dependent Claim
124 words
In the method of preparing a flexible polyurethane foam from a polyol and a polyisocyanate the improvement which comprises adding to the foam-forming composition from about five to about 25 parts by weight per 100 parts by weight of polyol of an antistatic additive composition comprising one part by weight of a quaternary ammonium compound selected from the group consisting of soya dimethyl ethyl ammonium ethylsulfate, soya dimethyl ethyl ammonium ethylphosphate, and mixtures thereof and from about 0.4 to about 3 parts by weight of a plasticizer composition selected from the group consisting of N-ethyl-o- and p-toluene sulfonamide, o- and p-toluene sulfonamide, tetrakis (2 chloroethyl) ethylene diphosphate, and mixtures thereof, to provide a foam having a reduced tendency to develop and accumulate electrostatic charges.
Claim 3
Dependent Claim
27 words
The method of claim 1 where the antistatic additive composition is comprised of one part of quaternary ammonium compound to about one and one-half parts of plasticizer.
Claim 4
Dependent Claim
22 words
The method of claim 2 where the plasticizer is a liquid, and the quaternary ammonium compound is dissolved in the liquid plasticizer.
Claim 5
Dependent Claim
16 words
The method of claim 1 where the quaternary ammonium compound is soya dimethyl ethyl ammonium ethylsulfate.
Claim 6
Dependent Claim
16 words
The method of claim 4 where the plasticizer is a mixture of N-ethyl-o- and p-toluene sulfonamide.
Claim 7
Dependent Claim
22 words
The method of claim 1 where the polyol is selected from the group consisting of polyester polyol, polyether polyol, and mixtures thereof.
Claim 8
Dependent Claim
26 words
The method of claim 1 where the polyol is a blend of polyether polyol and a graft copolymer of polyether polyol and copolymerized styrene and acrylonitrile.
Claim 9
Dependent Claim
24 words
The method of claim 1 where the antistatic additive composition is prepared by mixing the quaternary ammonium compound and the plasticizer in the polyol.
Claim 10
Dependent Claim
17 words
Flexible polyurethane foam produced according to the method of any one of claims 1 through 8 inclusive.
References Cited (Backward Citations)
US4169922A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1989-08-11 | 1990-02-10 | 1990-08-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1993-08-11 | 1994-02-10 | 1994-08-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1997-08-11 | 1998-02-10 | 1998-08-12 | $7700.00 | Window Closed / Lapsed |