US3932295A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Detergent composition
Assignee: Kao Corp
•
Filing: 1974-04-29
•
Granted: 1976-01-13
•
Expires: 1994-04-29
Abstract
Abstract A bleaching detergent composition comprising a percarbonate and polyethylene glycol or polyvinyl pyrrolidone or a mixture thereof.
Inventors
- 👤 Takashi Fujino
- 👤 Riyouichi Matsui
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 12:58
CPC Classifications
C; C11; C11D; C11D3/00; C11D3/39; C11D3/3942; C11D3/0005; C11D3/0021; C11D3/16; C11D3/37; C11D3/3703; C11D3/3707; C11D3/3746; C11D3/3769; C11D3/3776; C11D3/3902
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
114 words
A bleaching detergent composition consisting essentially of an anionic or nonionic textile-washing surfactant; from 1 to 50% by weight of sodium percarbonate; and a polymer selected from the group consisting of polyethylene glycol having a molecular weight in the range of 4000 to 20000, polyvinylpyrrolidone having a molecular weight in the range of 40000 to 360000, and mixtures thereof, the amount of said polymer being from 0.01 to 10 times the amount of sodium percarbonate, whereby the composition in aqueous solution is effective to remove soil from textiles and bleach the textiles and said polymer is effective to reduce migration of dyestuffs from colored textiles to white textiles present in the same washing bath.
Claim 2
Dependent Claim
114 words
A bleaching detergent composition consisting essentially of an anionic or nonionic textile-washing surfactant; from 1 to 50% by weight of sodium percarbonate; and a polymer selected from the group consisting of polyethylene glycol having a molecular weight in the range of 4000 to 20000, polyvinylpyrrolidone having a molecular weight in the range of 40000 to 360000, and mixtures thereof, the amount of said polymer being from 0.01 to 10 times the amount of sodium percarbonate, whereby the composition in aqueous solution is effective to remove soil from textiles and bleach the textiles and said polymer is effective to reduce migration of dyestuffs from colored textiles to white textiles present in the same washing bath.
Claim 3
Dependent Claim
17 words
A bleaching composition as claimed in claim 1, in which said polymer consists of said polyethylene glycol.
Claim 4
Dependent Claim
16 words
A bleaching composition as claimed in claim 1, in which said polymer consists of said polyvinylpyrrolidone.
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) | 1979-01-12 | 1979-07-14 | 1980-01-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-01-12 | 1983-07-14 | 1984-01-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-01-12 | 1987-07-14 | 1988-01-13 | $7700.00 | Window Closed / Lapsed |