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:
Mar. 18, 2003
Filed:
Mar. 27, 2001
David K. Luttrull, Phoenix, AZ (US);
Neltec, Inc., Tempe, AZ (US);
Abstract
A resin blend that includes a copolymer of styrene and maleic anhydride (SMA), an epoxy resin (brominated, phosphonated, or bromine-free), and a multifunctional amine cross-linking agent is disclosed. The cross-linking agent generally contains at least two primary amino groups to promote formation of imide functionalities upon reaction with the anhydride moieties of the SMA copolymer. Particularly useful cross-linking agents include triazine-centered diamino and triamino compounds such as benzoguanamine, acetoguanamine, and melamine. The disclosed resin blend finds use as a polymer matrix in composite materials and as an impregnating resin in laminates. Compared to conventional SMA copolymer/epoxy resin blends, the disclosed resin exhibits lower dielectric constant and dissipation factor, as well as higher thermal and moisture resistance, making it especially useful in high-speed, low-loss printed wire board applications.