Silane coupling agents

Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – Processes of preparing a desired or intentional composition...

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Details

523213, 427387, 4274072, 427409, 528 25, 528 26, C08K 908

Patent

active

050065734

ABSTRACT:
A novel organosilane coupling agent is disclosed and its use as an adhesion promoter in mineral-filled unsaturated polymer systems is described. Additionally, use of the organosilane as a primer for various substrates is presented. The coupling agent comprises the reaction product of an isocyanatoalkyl ester of acrylic or methacrylic acid with an aminoorganosilane. The organosilane so formed links the acryloxyalkyl or methacryloxyalkyl functionality to an alkylene, or aminoalkylene, group on the silicon atom through a urea group. Use of the organosilane as a coupling agent in a mineral-filled unsaturated polymer results in superior resistance to moisture, particularly when the polymer is selected from the group of corrosion resistant unsaturated polyesters.

REFERENCES:
patent: 2718516 (1955-09-01), Bortnick
patent: 2821544 (1958-01-01), Holtschmidt
patent: 3258477 (1966-06-01), Plueddemann et al.
patent: 3671562 (1972-06-01), Pepe et al.
patent: 4278809 (1981-07-01), Burdett

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