Title:
COPOLYMER AND PROCESS FOR PRODUCTION OF THE SAME
Document Type and Number:
WIPO Patent Application WO/2008/013122
Kind Code:
A1
Abstract:
The invention provides a means for improving an unsaturated polyalkylene glycol
copolymer expectative as a detergent builder in the ability to inhibit soil redeposition.
A copolymer which comprises repeating units (I) derived from an unsaturated
polyalkylene glycol monomer (A) represented by chemical formula (1) and repeating
units (II) derived from a (meth)acrylic acid type monomer (B) and bears sulfur-containing
groups at the ends and which has an S value (quantity of sulfur introduced) of 3
or above as defined by the formula: S = (quantity of S contained in the polymer)/(total
quantity of S) x 100, characterized in that the content of the repeating units
(I) derived from the monomer (A) is at least 30% by mass when the mass of the whole
copolymer is taken as 100% by mass (with the proviso that the mass of the repeating
units (II) is in terms of acid type) or in that the weight-average molecular weight
is 7000 or above.
Inventors:
TSUMORI, Takahiro (6-28-206, Koyoen-higashiyamacho Nishinomiya-sh, Hyogo 12, 6620012, JP)
Application Number:
JP2007/064371
Publication Date:
January 31, 2008
Filing Date:
July 20, 2007
Export Citation:
Assignee:
NIPPON SHOKUBAI CO., LTD. (1-1 Koraibashi 4-chome, Chuo-ku Osaka-sh, Osaka 43, 5410043, JP)
株式会社日本触媒 (〒43 大阪府大阪市中央区高麗橋４丁目１番１号 Osaka, 5410043, JP)
株式会社日本触媒 (〒43 大阪府大阪市中央区高麗橋４丁目１番１号 Osaka, 5410043, JP)
International Classes:
C08F290/06; C08F290/00
Attorney, Agent or Firm:
HATTA, Mikio et al. (Dia Palace Nibancho, 11-9 Nibanch, Chiyoda-ku Tokyo, 102-0084, JP)