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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 10370557 B1

PDFFull Text
Date of Patent:
Aug. 06, 2019

Filed:

Nov. 18, 2015

D1563 radiation curable secondary coating for optical fibers

Applicant:

Dsm Ip Assets B.v., Heerlen TE, NL;

Inventors:

Hirofumi Uchida, Tokyo, JP;

Zen Komiya, Tokyo, JP;

Assignee:

DSM IP Assets B.V., Te Heerlen, NL;

Attorneys:

Daniel S. Bujas

Kevin M. Bull

Primary Examiner:

Sanza L McClendon

Int. Cl.
CPC ...
C09D 135/02 (2006.01); C08F 220/34 (2006.01); C08F 222/22 (2006.01); C08F 290/06 (2006.01); C09D 133/06 (2006.01); C09D 151/08 (2006.01); C09D 175/16 (2006.01); G02B 6/00 (2006.01); C08F 222/20 (2006.01); G02B 6/02 (2006.01); C08G 18/48 (2006.01); C08G 18/67 (2006.01); C08G 18/24 (2006.01);
U.S. Cl.
CPC ...
C09D 135/02 (2013.01); C08F 220/34 (2013.01); C08F 222/20 (2013.01); C08F 222/22 (2013.01); C08F 290/067 (2013.01); C08G 18/246 (2013.01); C08G 18/4825 (2013.01); C08G 18/672 (2013.01); C09D 133/066 (2013.01); C09D 151/08 (2013.01); C09D 175/16 (2013.01); G02B 6/00 (2013.01); G02B 6/02395 (2013.01);
Abstract

A radiation curable secondary coating composition for optical fiber is described and claimed. This radiation curable secondary coating composition includes component (A) which is a urethane (meth)acrylate and component (B) which is a (meth)acrylate compound with two or more ethylenically unsaturated groups and one or more bisphenol structures; wherein the content of component (B) in the composition is 60-300 mass parts per 100 mass parts of component (A). The liquid secondary coating has a viscosity at 25° C. of from about 0.1 Pa·s to about 15 Pa·s. Films obtained by curing the liquid radiation curable secondary coating composition of the present invention have a Young's modulus of from about 600 MPa to about 500 MPa and the breaking elongation of the cured film is from about to 5% to about 50%.

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