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 8586670 B1

PDFFull Text
Date of Patent:
Nov. 19, 2013

Filed:

Aug. 30, 2007

Chloroprene polymer latex and process for producing the same

Applicants:

Youichiro Takenoshita, Kawasaki, JP;

Noriko Ogawa, Kawasaki, JP;

Inventors:

Youichiro Takenoshita, Kawasaki, JP;

Noriko Ogawa, Kawasaki, JP;

Assignee:

Showa Denko K.K., Tokyo, JP;

Attorney:

Sughrue Mion, PLLC

Primary Examiner:

Karuna P Reddy

Int. Cl.
CPC ...
C08L 11/02 (2006.01); C08L 11/00 (2006.01); C08L 9/10 (2006.01); C08L 25/02 (2006.01); C08L 9/00 (2006.01); C08L 47/00 (2006.01); C08F 214/02 (2006.01); C08F 36/18 (2006.01); C08F 136/18 (2006.01);
U.S. Cl.
CPC ...
Abstract

A latex of a chloroprene polymer formed from one or more monomers comprising 2-chloro-1,3-butadiene as the main monomer ingredient, characterized in that the solid matter in the polymer latex has a gel content less than 3 mass %, the solid matter in the polymer latex includes a tetrahydrofuran-soluble component having a weight-average molecular weight of from 550,000 to 1,100,000 and a molecular-weight distribution (Mw/Mn) of from 2.0 to 3.1, and the dried solid matter in the polymer latex has a crystallization rate (R) represented by hardness increase at −10° C. (R is the time required for initial hardness (time=0) to increase by 30 points at −10° C. as measured according to JIS-K6301) less than 60 minutes. The chloroprene polymer latex has an excellent balance among initial bond strength, contact adhesion, and water resistance. This latex is useful as an adhesive and can be used in applications where heat resistance of 60° C. or higher, initial bond strength, and contact adhesion are required.

Find Patent Forward Citations

Takenoshita, Youichiro. (2013). Chloroprene polymer latex and process for producing the same (U.S. Patent No. 8586670). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/8586670

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

Loading…