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:
Nov. 20, 1990
Filed:
Mar. 24, 1988
Tsuneo Tsubakimoto, Toyonaka, JP;
Yoshinori Sano, Kobe, JP;
Hideyuki Tahara, Osaka, JP;
Tsuyoshi Hirata, Takatsuki, JP;
Hiroshi Ito, Osaka, JP;
Yasuhiro Mori, Suita, JP;
Nippon Shokubai Kagaku Kogyo, Co., Ltd., Osaka, JP;
Abstract
A cement dispersant containing a water-soluble polymer containing at least 10 mol % of structural units represented by the general formula I: ##STR1## wherein X is H or CH.sub.2 R.sup.1, R.sup.1 is H or COO--[--A).sub.m B).sub.n ]H, R is H, CH.sub.3, or COO--[--A).sub.m B).sub.n ]H (providing that R is H where X is CH.sub.2 R.sup.1), A is iminoalkylene having 2 to 4 carbon atoms, B is oxyalkylene having 2 to 4 carbon atoms, m is an average number in the range of 0.1 to 10, n is O or an average positive number not more than 100, --A).sub.m may be in a linear or branched configuration, wherein the sequence of A and B in the segment in parenthesis may be regular or random.