Bonding agents and sealants based on liquid rubbers

Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – Mixing of two or more solid polymers; mixing of solid...

Reexamination Certificate

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Details

C525S216000, C525S221000, C525S222000, C525S232000, C525S240000, C525S241000

Reexamination Certificate

active

07902298

ABSTRACT:
High-temperature-curing reactive compositions based on natural and/or synthetic elastomers containing olefinic double bonds, and on vulcanizing agents, are described, which contain at least one liquid polyene having a molecular weight between 400 and 80,000 and at least one liquid polybutadiene having a narrow molecular weight distribution and a microstructure of 10 to 20% vinyl-1,2 double bonds, 50 to 60% trans-1,4 double bonds, and 25 to 35% cis-1,4 double bonds in the molecule. These compositions furthermore contain a vulcanizing system of sulfur and accelerators and/or, if applicable, quinone oximes. These compositions are suitable for use as a single-component adhesive, sealant, or coating compound in automobile manufacture, with high tensile shear strength and high impact peel strength even, in particular, at low temperatures.

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