Abstract: Epoxy adhesive compositions are provided. Specifically, the composition is a two-part, low-heat cure epoxy structural adhesive composition with a unique, well-balanced array of properties. The composition comprises components (A) and (B) where component (A) comprises at least one compound having an average epoxy functionality of at least two and optionally an epoxy functionalized liquid rubber and where component (B) comprises a polyamine, a polyamide and optionally an epoxy reactive liquid rubber. The compositions are useful as structural adhesives in bonding operations in industrial manufacturing such as automobile manufacturing.

Abstract: The invention relates to silicone-polyether linear block copolymers of the formula ##STR1## wherein, R is hydrogen or a C.sub.(1-8) alkyl, alkoxyl or haloalkyl radical or a monovalent epoxy-functional organic radical;R.sup.1 is hydrogen or a C.sub.(1-8) alkyl or alkoxyl radical, or a monovalent epoxy-functional organic radical;provided that at least two R or R.sup.1 groups are either hydrogen or monovalent epoxy-functional organic radicals;R.sup.2 is a divalent alkylene radical;R.sup.3 is a C.sub.(2-6) alkyl or alkoxyl radical;n is a positive integer of about 4 to about 400;m is a whole number of from 0 to about 50; and,each of R, R.sup.1, R.sup.2, and R.sup.3, may be unsubstituted or substituted The invention also relates to UV-curable compositions comprising the above-described compound, with or without a UV-detectable dye marker, and a process for making such a compound.

Abstract: An improved silicone composition is disclosed, which comprises:a) at least one silanol chain-stopped polydiorganosiloxane polymer;b) an acyloxy, alkoxy, or aryloxy-functional crosslinking agent; andc) a catalytic amount of an onium salt photocatalyst.These materials are characterized by enhanced cure properties, such as short tack free time; and they can also include various other components, such as fillers, plasticizers, condensation cure catalysts, and adhesion promoters.

Abstract: The invention relates to silicone-polyether linear block copolymers of the formula ##STR1## wherein, R is hydrogen or a C.sub.(1-8) alkyl, alkoxyl or haloalkyl radical or a monovalent epoxy-functional organic radical;R.sup.1 is hydrogen or a C.sub.(1-8) alkyl or alkoxyl radical, or a monovalent epoxy-functional organic radical;provided that at least two R or R.sup.1 groups are either hydrogen or monovalent epoxy-functional organic radicals;R.sup.2 is a divalent alkylene radical;R.sup.3 is a C.sub.(2-6) alkyl or alkoxyl radical;n is a positive integer of about 4 to about 400;m is a whole number of from 0 to about 50; and,each of R, R.sup.1, R.sup.2 and R.sup.3 may be unsubstituted or substituted. The invention also relates to UV-curable compositions comprising the above-described compound, with or without a UV-detectable dye marker, and a process for making such a compound.