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 9570641 B1

PDF
Full Text
Expired
Date of Patent:
Feb. 14, 2017

Filed:

Nov. 14, 2012
Applicant:

Sumitomo Chemical Company, Limited, Tokyo, JP;

Inventor:

Hiroaki Yoda, Chiba, JP;

Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H01L 31/048 (2014.01); C08G 61/08 (2006.01); C09D 123/08 (2006.01); C08K 5/5425 (2006.01);
U.S. Cl.
CPC ...
H01L 31/0481 (2013.01); C08G 61/08 (2013.01); C09D 123/0853 (2013.01); C09D 123/0869 (2013.01); C08G 2261/135 (2013.01); C08G 2261/1426 (2013.01); C08G 2261/3322 (2013.01); C08G 2261/418 (2013.01); C08G 2261/724 (2013.01); C08G 2261/76 (2013.01); C08G 2261/91 (2013.01); C08K 5/5425 (2013.01); C08L 2203/204 (2013.01); C08L 2312/00 (2013.01); Y02E 10/50 (2013.01);
Abstract

Provided is a polymer from which an encapsulant excellent in weather resistance and processability can be obtained when being used for an encapsulant for a solar cell. The polymer that has a main chain comprising repeating units represented by formula (1) and repeating units represented by formula (2) and satisfies requirements (a1), (a2), and (a3), (a1): the ratio of the number of the repeating units represented by formula (2) to the total number of the carbon atoms that constitute the main chain of the polymer is from 3.8% to 7.5%;(a2): the ratio X represented by formula (3) is from 82% to 100%;=100×  (3)(a3): the polymer has a melting point of 42° C. to 90° C. as measured with a differential scanning calorimeter.


Find Patent Forward Citations

Yoda, Hiroaki. (2017). Polymer and solar cell encapsulant using the polymer (U.S. Patent No. 9570641). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/9570641

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