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:
Apr. 10, 1990
Filed:
Jun. 25, 1987
Fumikatsu Takeuchi, Sayama, JP;
Tsutomu Takeuchi, Sayama, JP;
Noriyuki Osaka, Sayama, JP;
Yoichi Takizawa, Sayama, JP;
Susumu Kawase, Sayama, JP;
Soken Kagaku Kabushiki Kaisha, Tokyo, JP;
Abstract
A graft copolymer having dispersion stabilizing effect, which is a product of the polymerization of 5 to 30% by weight of a macromonomer which has a molecular weight of 1,000 to 100,000 and has a radical polymerizable unsaturated group at its one end, 1 to 40% by weight of a hydrophillic monomer which has a hydrophillic moiety in it and has a radical polymerizable unsaturated group, and 5 to 40% by weight of a fluorinated monomer which has a florinated moiety in it and has a radical polymerizable unsaturated group, the % by weight being based on a total of the three monomers, and 0 to 50% of the total of the total of the three monomers of a monomer copolymerizable therewith. The graft copolymer of this invention can be used as an excellent dispersion stablilizer for emulsion polymerization, whereby in emulsion polymerization it is possible to attain polymer particle dispersion stability to ensure that the polymer particles will not be agglomerated even if they have been grown to larger particles having a diameter of 0.5 .mu. or more and that dispersion of the polymer particles having a large and uniform particle diameter is obtained.