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:
Sep. 19, 1978
Filed:
Sep. 15, 1977
Sumitomo Chemical Company, Limited, Osaka, JP;
Abstract
A sulfonated product of butadiene or isoprene oligomer of the formula: ##STR1## wherein one of R.sub.1 and R.sub.1 ' is hydrogen or methyl and another one is hydrogen; R.sub.2 ' is hydrogen or methyl; one of X.sub.1 and X.sub.2 is --SO.sub.3 M and another one is hydrogen; a and b are each an integer satisfying the conditions; n = a + b, 2 < n < 40 and 0 < b; M is hydrogen, Na, K, Li or --NR.sub.3 R.sub.4 R.sub.5 R.sub.6 ; and R.sub.3, R.sub.4, R.sub.5 and R.sub.6 are each hydrogen or an alkyl having 1 to 6 carbon atoms, which has specific properties, particularly excellent hard water resistance, and is useful for various utilities, for instance, as a surfactant, emulsifier, or the like, and a process for the production of the sulfonated product.