US3979306A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method and composition for finishing clothings to prevent yellowing
Assignee: Kao Corp
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Filing: 1973-11-15
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Granted: 1976-09-07
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Expires: 1993-11-15
Abstract
Abstract Clothings are treated with a finishing agent composition containing one or more of the following compounds blended therein: 4,4'-butylidene-bis(6-tert.-butyl-3-methylphenol), 2,2'-butylidene-bis(6-tert.-butyl-4-methylphenol), 4,4'-thio-bis(6-tert.-butyl-3-methylphenol), 4,4'-thio-bis(6-tert.-butyl-2-methylphenol), styrenated phenol, Trisalkylphenylphosphite (in which the alkyl group has 8 to 14 carbon atoms) and dialkyl 3,3'-thiodipropionate (in which the alkyl group has 14 to 18 carbon atoms), to reduce yellowing of clothings.
Inventors
- 👤 Haruhiko Arai
- 👤 Junryo Mino
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 15:23
CPC Classifications
D; D06; D06M; D06M13/00; D06M13/10; D06M13/152; D06M13/244; D06M13/248; D06M13/252
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
59 words
A clothes starching composition consisting essentially of from 10 to 99 percent of a starching agent selected from the group consisting of carboxymethyl cellulose, starch, polyvinyl alcohol, polyvinyl acetate and mixtures thereof, from 0.001 to 5 percent by weight of an anti-yellowing agent selected from the group consisting of 4,4'-butylidene-bis(6-tert.-butyl-3-methyl-phenol), 2,2-butylidene-bis(6-tert.-butyl-4-methylphenol), 4,4'-thio-bis(6-tert.-butyl-3-methylphenol) and 4,4'-thio-bis(6-tert.-butyl-2-methylphenol, and the balance is water.
Claim 2
Dependent Claim
59 words
A clothes starching composition consisting essentially of from 10 to 99 percent of a starching agent selected from the group consisting of carboxymethyl cellulose, starch, polyvinyl alcohol, polyvinyl acetate and mixtures thereof, from 0.001 to 5 percent by weight of an anti-yellowing agent selected from the group consisting of 4,4'-butylidene-bis(6-tert.-butyl-3-methyl-phenol), 2,2-butylidene-bis(6-tert.-butyl-4-methylphenol), 4,4'-thio-bis(6-tert.-butyl-3-methylphenol) and 4,4'-thio-bis(6-tert.-butyl-2-methylphenol, and the balance is water.
Claim 3
Dependent Claim
24 words
A clothes starching composition as claimed in claim 1, wherein the amount of said anti-yellowing agent is from 0.01 to 0.5 percent by weight.
Claim 4
Dependent Claim
46 words
A method which comprises immersing clothing for more than 2 minutes in an aqueous bath obtained by diluting the composition of claim 2 with water so that the concentration of said substance in said bath is from one to 50 ppm and then drying the clothing.
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) | 1979-09-07 | 1980-03-08 | 1980-09-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-09-07 | 1984-03-08 | 1984-09-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-09-07 | 1988-03-08 | 1988-09-07 | $7700.00 | Window Closed / Lapsed |