RTV silicones having bis(ureido)silane chain extenders and amino

Details RTV silicones having bis(ureido)silane chain extenders and amino RTV silicones having bis(ureido)silane chain extenders and amino

1989-06-01

1990-09-25

Marquis, Melvyn I.

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

At least one aryl ring which is part of a fused or bridged...

524788, 528 33, 528 34, 528 40, 528 41, C08K 326

Patent

active

049594079

ABSTRACT:
A moisture curable solventless organopolysiloxane composition is provided useful as an adherent construction sealant. Improved cure rate, higher elongation at break values and lower modulus RTVs are achieved by using a bis(ureido)silane as a coupler and an aminoxysiloxane as a crosslinker for a silanol-terminated polydiorganosiloxane base polymer.

REFERENCES:
patent: 3766127 (1973-10-01), Clark et al.
patent: 3817909 (1974-06-01), Toporcer et al.
patent: 3996184 (1976-12-01), Klosowski
patent: 4528353 (1985-07-01), Lucas et al.

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