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:
Jan. 03, 2012
Filed:
Oct. 25, 2009
Applicant:
Li-chun Chen, Taoyuan, TW;
Inventor:
Li-Chun Chen, Taoyuan, TW;
Assignee:
Iteq Corporation, Taoyuan, TW;
Primary Examiner:
Int. Cl.
CPC ...
B32B 27/38 (2006.01); B32B 27/04 (2006.01); C08L 63/00 (2006.01); C08K 3/22 (2006.01); C08K 3/36 (2006.01); C08K 5/49 (2006.01);
U.S. Cl.
CPC ...
Abstract
A halogen-free varnish includes (A) resin, (B) curing agent, (C) flame inhibitor (flame-retarding agent), (D) accelerator and (E) additives. Resin of (A) has novolac epoxy resin, DOPO-CNE and DOPO-HQ-CNE. Curing agent of (B) includes Benzoxazine resin and phenol novolac resin. Glass fabric cloth is dipped into the halogen-free varnish so as to form a prepreg with better thermal stability, anti-flammability, low absorbent ability and higher curing rate. Furthermore, the prepreg has more toughness.