Durable anti-fogging composition
US4214908A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Oct 27, 1977 |
| Grant date | Jul 29, 1980 |
| Priority date | — |
| Expiry date | Oct 27, 1997 |
Classification
- Technology area (CPC D)Textiles; Paper
- CPC primaryD21H17/66
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
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.sub.1, R.sub.2 and R.sub.3 each stand for an alkyl, hydroxyalkyl or benzyl group, the sum of carbon atoms of the groups R.sub.1, R.sub.2 and R.sub.3 is in the range of 16 to 38 and one of the groups R.sub.1, R.sub.2 and R.sub.3 is an alkyl or hydroxyalkyl group having at least 14 carbon atoms, and R.sub.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.sub.3, MeX and MeOOCCH.sub.3 in which Me is a cation selected from Na, K, Li, NH.sub.4, 1/2Ca and 1/2Mg and X is a halogen ion.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.