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US4214908A
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Durable anti-fogging composition
Assignee: Kao Corp
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Filing: 1977-10-27
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Granted: 1980-07-29
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Expires: 1997-10-27
Abstract
Abstract A durable anti-fogging agent composition comprises at least one sulfonic acid type amphoteric surface active agent represented by the following general formula (I): ##STR1## wherein R 1 , R 2 and R 3 each stand for an alkyl, hydroxyalkyl or benzyl group, the sum of carbon atoms of the groups R 1 , R 2 and R 3 is in the range of 16 to 38 and one of the groups R 1 , R 2 and R 3 is an alkyl or hydroxyalkyl group having at least 14 carbon atoms, and R 4 stands for an alkylene or hydroxyalkylene group having 2 to 4 carbon atoms, and at least one member selected from inorganic salts and acetates represented by the general formulae MeSCN, MeNO 3 , MeX and MeOOCCH 3 in which Me is a cation selected from Na, K, Li, NH 4 , 1/2Ca and 1/2Mg and X is a halogen ion.
Inventors
- 👤 Katsuhiko Deguchi
- 👤 Junryo Mino
- 👤 Kaoru Tsujii
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 02:21
CPC Classifications
D; D21; D21H; D21H17/00; D21H17/03; D21H17/05; D21H17/06; C; C03; C03C; C03C17/00; C03C17/28; C09; C09K; C09K3/00; C09K3/18; D21H17/07; D21H17/09; D21H17/14; D21H17/63; D21H17/66
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
103 words
A durable anti-fogging composition consisting essentially of 0.05 to 30% by weight of at least one sulfonic acid type amphoteric surface active agent having the formula (I): ##STR9## wherein R 1 , R 2 and R 3 each is alkyl, hydroxyalkyl or benzyl, the sum of the number of carbon atoms of R 1 , R 2 and R 3 is in the range of from 16 to 38 and one of R 1 , R 2 and R 3 is alkyl or hydroxyalkyl having at least 14 carbon atoms, and R 4 is alkylene or hydroxyalkylene having 2 to 4 carbon atoms;
Claim 2
Dependent Claim
103 words
A durable anti-fogging composition consisting essentially of 0.05 to 30% by weight of at least one sulfonic acid type amphoteric surface active agent having the formula (I): ##STR9## wherein R 1 , R 2 and R 3 each is alkyl, hydroxyalkyl or benzyl, the sum of the number of carbon atoms of R 1 , R 2 and R 3 is in the range of from 16 to 38 and one of R 1 , R 2 and R 3 is alkyl or hydroxyalkyl having at least 14 carbon atoms, and R 4 is alkylene or hydroxyalkylene having 2 to 4 carbon atoms;
Claim 3
Dependent Claim
74 words
01 to 20% by weight of at least one member selected from the group consisting of inorganic salts and acetates having the formulae MeSCN, MeNO 3 , MeX and MeOOCCH 3 in which Me is a cation selected from the group consisting of Na, K, Li, NH 4 , 1/2Ca and 1/2Mg and X is halogen; up to 30% by weight of alkanol having 2 or 3 carbon atoms; and the balance is water.
Claim 4
Dependent Claim
74 words
01 to 20% by weight of at least one member selected from the group consisting of inorganic salts and acetates having the formulae MeSCN, MeNO 3 , MeX and MeOOCCH 3 in which Me is a cation selected from the group consisting of Na, K, Li, NH 4 , 1/2Ca and 1/2Mg and X is halogen; up to 30% by weight of alkanol having 2 or 3 carbon atoms; and the balance is water.
Claim 5
Dependent Claim
38 words
A durable anti-fogging composition as set forth in claim 1, which comprises 0.1 to 10% by weight of said sulfonic acid type amphoteric surface active agent and 0.1 to 10% by weight of said inorganic salt or acetate.
Claim 6
Dependent Claim
24 words
A durable anti-fogging composition as set forth in claim 1, wherein said inorganic salt is NaSCN, NaNO 3 or Mg(NO 3 ) 2 .
Claim 7
Dependent Claim
104 words
A durable anti-fogging composition consisting essentially of 0.05 to 30% by weight of at least one sulfonic acid type amphoteric surface active agent having the formula (I): ##STR10## wherein R 1 , R 2 and R 3 each is alkyl, hydroxyalkyl or benzyl, the sum of the number of carbon atoms of R 1 , R 2 and R 3 is in the range of from 16 to 38 and one of R 1 , R 2 and R 3 is an alkyl or hydroxyalkyl having at least 14 carbon atoms, and R 4 is alkylene or hydroxyalkylene having 2 to 4 carbon atoms;
Claim 8
Dependent Claim
104 words
A durable anti-fogging composition consisting essentially of 0.05 to 30% by weight of at least one sulfonic acid type amphoteric surface active agent having the formula (I): ##STR10## wherein R 1 , R 2 and R 3 each is alkyl, hydroxyalkyl or benzyl, the sum of the number of carbon atoms of R 1 , R 2 and R 3 is in the range of from 16 to 38 and one of R 1 , R 2 and R 3 is an alkyl or hydroxyalkyl having at least 14 carbon atoms, and R 4 is alkylene or hydroxyalkylene having 2 to 4 carbon atoms;
Claim 9
Dependent Claim
74 words
01 to 20% by weight of at least one member selected from the group consisting of inorganic salts and acetates having the formulae MeSCN, MeNO 3 , MeX and MeOOCCH 3 in which Me is a cation selected from the group consisting of Na, K, Li, NH 4 , 1/2Ca and 1/2Mg and X is halogen; up to 30% by weight of alkanol having 2 or 3 carbon atoms; and the balance is water.
Claim 10
Dependent Claim
74 words
01 to 20% by weight of at least one member selected from the group consisting of inorganic salts and acetates having the formulae MeSCN, MeNO 3 , MeX and MeOOCCH 3 in which Me is a cation selected from the group consisting of Na, K, Li, NH 4 , 1/2Ca and 1/2Mg and X is halogen; up to 30% by weight of alkanol having 2 or 3 carbon atoms; and the balance is water.
Claim 11
Dependent Claim
72 words
A durable anti-fogging composition as set forth in claim 4 wherein said nonionic surface active agent has the formula (II): RO(CH.sub.2 CH.sub.2 O).sub.n H (II) wherein R is alkyl having 10 to 16 carbon atoms, alkenyl having 14 to 18 carbon atoms, octylphenyl or nonylphenyl, and n is the number of moles of added ethylene oxide and is selected so that the HLB value is in the range of 12 to 15.
Claim 12
Dependent Claim
52 words
A durable anti-fogging composition as set forth in claim 4 which comprises from 0.1 to 10% by weight of said sulfonic acid type amphoteric surface active agent, from 0.1 to 10% by weight of said inorganic salt or acetate, and from 0.1 to 10% by weight of said nonionic surface active agent.
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) | 1983-07-29 | 1984-01-28 | 1984-07-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1987-07-29 | 1988-01-28 | 1988-07-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1991-07-29 | 1992-01-28 | 1992-07-29 | $7700.00 | Window Closed / Lapsed |