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:
Feb. 13, 2001
Filed:
Jun. 18, 1998
Applicant:
Inventors:
David M. Szum, Elmhurst, IL (US);
Chander P. Chawla, Batavia, IL (US);
Timothy E. Bishop, Algonquin, IL (US);
Assignee:
DSM N.V., Heerlen, NL;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C08F 2/48 ; C08F 2/50 ; B32B 1/702 ; B32B 1/706 ; B32B 1/710 ;
U.S. Cl.
CPC ...
C08F 2/48 ; C08F 2/50 ; B32B 1/702 ; B32B 1/706 ; B32B 1/710 ;
Abstract
Radiation-curable inner and outer primary optical fiber coatings are disclosed having both fast cure speed and reduced rates of yellowing. The compositions comprise particular photoinitiators and UV absorbers which are used in amounts to provide the combination of properties. The UV absorber can have ethylenic unsaturation. Outer primary coatings can be formulated to screen inner primary coatings and have fast cure speed.