Patent US4273684A successfully refreshed from Google Patents.
US4273684A
Expired / Lapsed
US
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Transparent detergent bar
Assignee: Kawaken Fine Chemicals Co Ltd
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Filing: 1980-05-22
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Granted: 1981-06-16
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Expires: 2000-05-22
Abstract
Abstract A transparent detergent bar possessing good foaming power and detergency in hard water is formulated consisting essentially of at least one salt of a N-long chain acyl-optically active acidic amino acid neutralized with a basic amino acid in the ratio of 1 mol of the former to 1 to 2 mols of the latter and water in the range of 5 to 35% based on the weight of the bar apart from water. Other adjuvents may be present.
Inventors
- 👤 Tetsuya Nagashima
- 👤 Yasunori Usuba
- 👤 Takahisa Ogawa
- 👤 Masahiro Takehara
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 15:44
CPC Classifications
C; C11; C11D; C11D3/00; C11D3/0005; C11D3/0094; C11D1/00; C11D1/02; C11D1/04; C11D1/10; C11D17/00; C11D17/0095; C11D3/16; C11D3/26; C11D3/32
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
116 words
A transparent detergent bar possessing good foaming power and detergency in hard water consisting essentially of at least one basic amino acid salt of N-long chain acyl-optically active acidic amino acid prepared by the neutralization reaction of 1 mol of N-long chain acyl-optically active acidic amino acid with 1 to 2 mols to basic amino acid and water, the amount of water being in the range of 5 to 25% by weight of the detergent bar apart from water when the neutralization degree of the basic amino acid salt is 1.0 to 1.5 equivalent and 5 to 35% by weight of the detergent bar apart from water when the neutralization degree is 1.6 to 2.0 equivalent.
Claim 2
Dependent Claim
116 words
A transparent detergent bar possessing good foaming power and detergency in hard water consisting essentially of at least one basic amino acid salt of N-long chain acyl-optically active acidic amino acid prepared by the neutralization reaction of 1 mol of N-long chain acyl-optically active acidic amino acid with 1 to 2 mols to basic amino acid and water, the amount of water being in the range of 5 to 25% by weight of the detergent bar apart from water when the neutralization degree of the basic amino acid salt is 1.0 to 1.5 equivalent and 5 to 35% by weight of the detergent bar apart from water when the neutralization degree is 1.6 to 2.0 equivalent.
Claim 3
Dependent Claim
33 words
A transparent detergent bar as set forth in claim 1, wherein said long chain acyl group is the acyl radical of a saturated or unsaturated fatty acid having 10 to 20 carbon atoms.
Claim 4
Dependent Claim
42 words
A transparent detergent bar as set forth in claim 1, wherein said optically active acidic amino acid is at least one member selected from the group consisting of L or D form of aspartic acid, glutamic acid, cysteic acid and homocysteic acid.
Claim 5
Dependent Claim
35 words
A transparent detergent bar as set forth in claim 1, wherein said basic amino acid is at least one member selected from the group consisting of L or D form of lysine, arginine and ornithine.
Claim 6
Dependent Claim
44 words
A transparent detergent bar as set forth in claim 1, further containing urea, wherein the ratio by weight of the amount of basic amino acid salt of N-long chain acyl-optically active acidic amino acid to the amount of urea is from 95:5 to 50:50.
Claim 7
Dependent Claim
47 words
The detergent bar of claim 1, containing as adjuvants at least one of a polyhydric alcohol and a saccharide, an additional surface active agent and, optionally, a perfume and coloring matter, the adjuvants being present in amount that they do not inhibit the transparency of the bar.
Claim 8
Independent Claim
125 words
A method of making a transparent solid detergent bar possessing good foaming power and detergency in hard water which comprises dissolving at least one basic amino acid salt of N-long chain acyloptically active acidic amino acid of neutralization degree of 1 to 2 equivalent in a mixture of lower alcohol and water, pouring the resultant solution into a frame, cooling, solidifying, cutting and drying into a shaped solid bar, the amount of water being in the range of 5-25% by weight of the detergent bar apart from water when the neutralization degree of the said basic amino acid salt is 1.0 to 1.5 and 5 to 35% by weight of the detergent bar apart from water when the neutralization degree is 1.6 to 2.0 equivalent.
Claim 9
Independent Claim
125 words
A method of making a transparent solid detergent bar possessing good foaming power and detergency in hard water which comprises dissolving at least one basic amino acid salt of N-long chain acyloptically active acidic amino acid of neutralization degree of 1 to 2 equivalent in a mixture of lower alcohol and water, pouring the resultant solution into a frame, cooling, solidifying, cutting and drying into a shaped solid bar, the amount of water being in the range of 5-25% by weight of the detergent bar apart from water when the neutralization degree of the said basic amino acid salt is 1.0 to 1.5 and 5 to 35% by weight of the detergent bar apart from water when the neutralization degree is 1.6 to 2.0 equivalent.
Claim 10
Dependent Claim
50 words
A method as set forth in claim 7, wherein urea is added to said basic amino acid salt of N-long chain acyl-optically active acidic amino acid, the ratio by weight of the amount of said basic amino acid salt to the amount of urea added being from 95:5 to 50:50.
Claim 11
Independent Claim
121 words
A method of making a transparent solid detergent bar possessing good foaming power and detergency in hard water which comprises milling a mixture of water and at least one basic amino acid salt of N-long chain acyl-optically active acidic amino acid of neutralization degree of 1 to 2 equivalent extruding a milled mixture from a plodder and stamping into a shaped solid bar, the amount of water being in the range of 5 to 25% by weight of the detergent bar apart from water when the neutralization degree of the said basic amino acid salt is 1.0 to 1.5 and 5 to 35% by weight of the detergent bar apart from water when the neutralization degree is 1.6 to 2.0 equivalent.
Claim 12
Independent Claim
121 words
A method of making a transparent solid detergent bar possessing good foaming power and detergency in hard water which comprises milling a mixture of water and at least one basic amino acid salt of N-long chain acyl-optically active acidic amino acid of neutralization degree of 1 to 2 equivalent extruding a milled mixture from a plodder and stamping into a shaped solid bar, the amount of water being in the range of 5 to 25% by weight of the detergent bar apart from water when the neutralization degree of the said basic amino acid salt is 1.0 to 1.5 and 5 to 35% by weight of the detergent bar apart from water when the neutralization degree is 1.6 to 2.0 equivalent.
Claim 13
Dependent Claim
38 words
A method as set forth in claim 9, wherein urea is incorporated into said mixture to provide a ratioby weight of the amount of said basic amino acid salt to amount of urea of from 95:5 to 50:50.
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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) | 1984-06-15 | 1984-12-15 | 1985-06-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-06-15 | 1988-12-15 | 1989-06-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-06-15 | 1992-12-15 | 1993-06-16 | $7700.00 | Window Closed / Lapsed |