The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jul. 29, 1980
Filed:
Oct. 27, 1977
Kao Soap Co., Ltd., Tokyo, JP;
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.