Thomas E Mccarthy

US Patent:

6342572, Jan 29, 2002

Filed:

Dec 28, 1999

Appl. No.:

09/473720

Inventors:

Michael W. Wagaman - Florham Park NJ
Thomas F. McCarthy - Bennington VT

Assignee:

Honeywell International Inc. - Morris Township NJ

International Classification:

C08F 3200

US Classification:

526308, 428365, 428375, 428376, 428378, 526309, 570125, 570126, 570127, 570128, 570129, 570131, 570132

Abstract:

The invention pertains to benzocyclobutene resins having flame retardant properties. Such resins have a high glass transition temperature (Tg 250Â C. ), low moisture absorption, low dielectric constant, good mechanical properties, flame retardancy (meets or exceeds UL94 V-O and/or VTM-O requirements), and can be cast onto a reinforcement to prepare a laminate for use as a substrate for electronic circuitry. The flame resistant compound is reaction product of a halogen containing compound of the formulae or wherein R is a halogen containing aromatic group, a halogen containing aliphatic group or a combination thereof; R is hydrogen, an aromatic group, an aliphatic group or an combination of an aromatic group and an aliphatic group which may contain halogen atoms; DA is a Diels-Alder reactive diene or a group that can act as a dienophile in a Diels-Alder reaction; and n is greater than or equal to 1; with a benzocyclobutene compound.