logo

For the Inventor, By the Inventor

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.:

US 5444118 B1

PDFFull Text
Date of Patent:
Aug. 22, 1995

Filed:

Mar. 19, 1993

Process for producing copolymer latex and paper coating composition,

Applicant:
Inventors:

Katsuhiko Tsuruoka, Yokkaichi, JP;

Shozo Nishida, Yokkaichi, JP;

Masafumi Wakamori, Yokkaichi, JP;

Takemitsu Tanaka, Yokkaichi, JP;

Masaaki Yada, Yokkaichi, JP;

Osamu Ishikawa, Yokkaichi, JP;

Hiroyuki Miki, Yokkaichi, JP;

Assignee:

Japan Synthetic Rubber Co., Ltd., Tokyo, JP;

Attorney:

Oblon, Spivak, McClelland, Maier, & Neustadt

Primary Examiner:

Peter D Mulcahy

Int. Cl.
CPC ...
C08L / ;
U.S. Cl.
CPC ...
524828 ; 524832 ; 524833 ; 524834 ;
Abstract

A two-stage process for producing a copolymer, comprising emulsion polymerizing (a) a 2-80% by weight of a conjugated diene compound, (b) 0.1-10% by weight of an ethylenically unsaturated carboxylic acid, and (c) 10-97.9% by weight of an ethylenically unsaturated compound other than the components (a) and (b) in the presence of (d) and .alpha.-methylstyrene dimer, wherein in the first stage, 10-50% by weight of the total amount of the components (a), (b) and (c) are added and polymerized at 70.degree.-80.degree. C. for 2-6 hours after the addition of the monomer, and after said first stage, 50-90% by weight of the total amount of the components (a), (b) and (c) are continuously fed and polymerized in a second stage.

Find Patent Forward Citations

Tsuruoka, Katsuhiko. (1995). Process for producing copolymer latex and paper coating composition, (U.S. Patent No. 5444118). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/5444118

Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile

Loading…