Patent ID: 7695804
Filing Date: 2010-04-13
Classification: C08L,C09J,Y10T

Abstract:
1. A heat-activatable adhesive comprising (i) from about 30 to about 70 wt. % nitrile butadiene rubber, (ii) from about 20 to about 60 wt. % of one or more novolac phenolic resins, and (iii) one or more crosslinking agents, in amount of less than about 0.25 wt. %, capable of effecting crosslinking of the one or more novolac phenolic resins, wherein the ratio of the mass of the one or more novolac phenolic resins over the mass of the one or more elastomers is at least about 0.65, and wherein the heat-activatable adhesive has a glass transition temperature of less than about 60° C.