US4284533A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Liquid abrasive-containing cleanser composition
Assignee: Kao Corp
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Filing: 1980-03-17
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Granted: 1981-08-18
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Expires: 2000-03-17
Abstract
Abstract A liquid cleanser composition comprising (a) 0.1-0.6 wt. % of partially cross-linked polyacrylic acid having an average degree of polymerization of 10 3 -10 5 and a Brookfield yield value of higher than 100 g/sec.cm., (b) 1-10 wt. % of a hydrotrope of the formula (I) or the formula (II): ROH (I) wherein R represents an alkyl group of 1-3 carbon atoms, or R'--O--(R"O).sub.n H (II) wherein R' represents hydrogen, an alkyl group of 1-4 carbon atoms, phenyl group or benzyl group, R" represents ethylene group, propylene group or a mixture of them, and n represents an average addition mole number and n is 1-20 when R' is hydrogen, and n is 1-3 when R' is a group of other than hydrogen, (c) 0.5-10 wt. % of a nonionic surfactant having an HLB of 10-17, and the remainder comprises at least one water-insoluble abrasive, water and a pH regulator effective to maintain the composition at a pH of 5-9.
Inventors
- 👤 Tetsuya Imamura
- 👤 Ryozi Shiozaki
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 19:23
CPC Classifications
C; C11; C11D; C11D3/00; C11D3/16; C11D3/37; C11D17/00; C11D17/0008; C11D17/0013; C11D3/3746; C11D3/3757; C11D3/3765
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
213 words
A liquid abrasive cleanser composition consisting essentially of: (a) 0.1 to 0.6 wt. % of cross-linked polyacrylic acid having an average degree of polymerization of 10 3 to 10 5 and a Brookfield yield value of at least about 100 g/sec.cm., said cross-linked polyacrylic acid having been prepared by copolymerizing acrylic acid or methacrylic acid with triallyl isocyanurate, (b) 1 to 10 wt. % of hydrotrope of formula (I) or formula (II): ROH (I) wherein R is alkyl having 1 to 3 carbon atoms, or R'--O--(R"O).sub.n H (II) wherein R' is hydrogen, alkyl having 1 to 4 carbon atoms, phenyl or benzyl, R" is ethylene, propylene or mixture thereof, and n is the average addition mole number with the provisos that n is 1 to 20 when R' is hydrogen and n is 1 to 3 when R' is a group of other than hydrogen, (c) 0.5 to 10 wt. % of nonionic synthetic organic surfactant having an HLB of 10 to 17, (d) 7 to 20 wt. % of water-insoluble abrasive having a particle size of from about 2 to about 150 microns, and the balance of the composition is essentially water and a water-soluble pH regulator in an amount effective to maintain the composition at a pH of 6 to 8.
Claim 2
Dependent Claim
213 words
A liquid abrasive cleanser composition consisting essentially of: (a) 0.1 to 0.6 wt. % of cross-linked polyacrylic acid having an average degree of polymerization of 10 3 to 10 5 and a Brookfield yield value of at least about 100 g/sec.cm., said cross-linked polyacrylic acid having been prepared by copolymerizing acrylic acid or methacrylic acid with triallyl isocyanurate, (b) 1 to 10 wt. % of hydrotrope of formula (I) or formula (II): ROH (I) wherein R is alkyl having 1 to 3 carbon atoms, or R'--O--(R"O).sub.n H (II) wherein R' is hydrogen, alkyl having 1 to 4 carbon atoms, phenyl or benzyl, R" is ethylene, propylene or mixture thereof, and n is the average addition mole number with the provisos that n is 1 to 20 when R' is hydrogen and n is 1 to 3 when R' is a group of other than hydrogen, (c) 0.5 to 10 wt. % of nonionic synthetic organic surfactant having an HLB of 10 to 17, (d) 7 to 20 wt. % of water-insoluble abrasive having a particle size of from about 2 to about 150 microns, and the balance of the composition is essentially water and a water-soluble pH regulator in an amount effective to maintain the composition at a pH of 6 to 8.
Claim 3
Dependent Claim
31 words
A liquid abrasive cleanser composition according to claim 1 wherein the partially cross-linked polyacrylic acid has an average polymerization degree of 10 4 and a Brookfield yield value of 100-200 g/sec.cm.
Claim 4
Dependent Claim
36 words
A liquid abrasive cleanser composition according to claim 1 or claim 2 wherein the nonionic surfactant is a condensate of ethylene oxide and a primary or secondary alcohol having an alkyl chain of 10-20 carbon atoms.
Claim 5
Dependent Claim
19 words
A liquid abrasive cleanser composition according to claim 1 containing 1 to 5 wt. % of said nonionic surfactant.
Claim 6
Dependent Claim
18 words
A liquid abrasive cleanser composition according to claim 1 wherein the hydrotrope is a compound of formula (I).
Claim 7
Dependent Claim
14 words
A liquid abrasive cleanser composition according to claim 1 wherein the hydrotrope is ethanol.
Claim 8
Dependent Claim
16 words
A liquid abrasive cleanser composition according to claim 1 wherein the pH regulator is ammonium hydroxide.
Claim 9
Dependent Claim
22 words
A liquid abrasive cleanser composition according to claim 1 wherein the pH regulator is an alkanolamine having 1 to 3 carbon atoms.
Claim 10
Dependent Claim
40 words
A liquid abrasive cleanser composition according to claim 1 wherein the water-insoluble abrasive is a member selected from the group consisting of silicon dioxide, aluminum oxide, magnesium oxide, titanium oxide, aluminosilicate, silicon carbide, iron oxides, powdery silica and powdery sands.
Claim 11
Dependent Claim
33 words
A liquid abrasive cleanser composition according to claim 1 in which the pH regulator is selected from the group consisting of ammonium hydroxide, alkanol (C 1 -C 3 ) amines, NaOH and KOH.
Claim 12
Dependent Claim
17 words
A liquid abrasive cleanser composition according to claim 1 wherein the pH regulator is NaOH or KOH.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1984-08-17 | 1985-02-16 | 1985-08-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-08-17 | 1989-02-16 | 1989-08-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-08-17 | 1993-02-16 | 1993-08-18 | $7700.00 | Window Closed / Lapsed |