Patent US3950185A successfully refreshed from Google Patents.
US3950185A
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US
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Film removing compositions
Assignee: Nichiban Co Ltd
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Filing: 1974-05-07
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Granted: 1976-04-13
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Expires: 1994-05-07
Abstract
Abstract A film removing composition consisting essentially of at least one halogenated hydrocarbon solvent as a major solvent and a pressure-sensitive adhesive component such as synthetic resins, and mixtures of natural rubber or synthetic rubbers and tackifiers. When the film removing composition is applied to a paint film to be removed, and a paper or cloth is put on the film removing composition and then peeled off, the paint film can be removed together with the paper or cloth.
Inventors
- 👤 Mitsuo Toyama
- 👤 Toshio Ito
- 👤 Eiji Kobayashi
- 👤 Hideo Kosaka
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 18:17
CPC Classifications
B; B08; B08B; B08B7/00; B08B7/0014; C; C09; C09D; C09D9/00; C09D9/005
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
54 words
A film removing composition consistng essentially of at least one halogenated hydrocarbon solvent, as a major solvent selected from the group consisting of methylene chloride, chloroform, carbon tetrachloride, bromochloromethane, ethylene dichloride, trichloroethylene, tetrachloroethylene, monochlorobenzene and a mixture thereof, and 5 to 20g of a pressure-sensitive adhesive component per 100 ml of said major solvent.
Claim 2
Dependent Claim
54 words
A film removing composition consistng essentially of at least one halogenated hydrocarbon solvent, as a major solvent selected from the group consisting of methylene chloride, chloroform, carbon tetrachloride, bromochloromethane, ethylene dichloride, trichloroethylene, tetrachloroethylene, monochlorobenzene and a mixture thereof, and 5 to 20g of a pressure-sensitive adhesive component per 100 ml of said major solvent.
Claim 3
Dependent Claim
86 words
The composition as claimed in claim 1, wherein said pressure-sensitive adhesive component is a mixture of at least one elastomer selected from the group consisting of natural rubber, cis-1,4-isoprene rubber, chloroprene rubber, styrene-butadiene block-copolymer, styrene-butadiene random copolymer, styrene-isoprene block-copolymer, butadiene rubber, butyl rubber and reclaimed rubber, and 10 to 100 weight parts of at least one tackifier selected from the group consisting of terpene resin, rosin, halogenated rosins and the derivatives thereof, coumarone resin, indene resin and petroleum resin per 100 weight parts of said elastomer.
Claim 4
Dependent Claim
51 words
The composition as claimed in claim 1, wherein said pressure-sensitive adhesive component is selected from the group consisting of a copolymer of acrylic ester containing from 4 to 12 carbon atoms in the alkyl group thereof, a copolymer of said acrylic ester with vinyl acetate or acrylic acid, and polyvinyl ether.
Claim 5
Dependent Claim
54 words
A process for removing paint films from objects having a coating thereon which comprises applying the composition of claim 1 to the paint film, putting a paper or cloth on said composition, thereby sticking fast said paper or cloth on the paint film through said composition, and then peeling off the paper or cloth.
References Cited (Backward Citations)
US1573537A
Cited
US1657323A
Cited
US2692245A
Cited
US3196027A
Cited
US3149364A
Cited
US3360472A
Cited
US3723330A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1979-04-13 | 1979-10-13 | 1980-04-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-04-13 | 1983-10-13 | 1984-04-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-04-13 | 1987-10-13 | 1988-04-13 | $7700.00 | Window Closed / Lapsed |