Process for preparing a room temperature curing organopolysiloxa

Details Process for preparing a room temperature curing organopolysiloxa Process for preparing a room temperature curing organopolysiloxa

1996-12-19

1999-08-10

Dawson, Robert

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...

524869, 528 17, 528 29, 528 34, C08L 8308

Patent

active

059360330

ABSTRACT:
A method for preparing a room temperature curing organopolysiloxane composition having good working properties, which comprises (A) a diorganopolysiloxane having at least two hydroxyl groups bonded to silicon atoms in one molecule, (B) a thixotropy improver, (C) a finely divided silica powder, (D) at least one member selected from organosilanes having two or more ketoxime groups bonded to a silicon atom in one molecule and partial hydrolyzates thereof, (E) a curing catalyst for the condensation curing reaction between (A) and (D) components, and (F) an amine-based silane coupling agent for imparting adhesiveness to the composition, wherein the (A), (B) and (C) components are first mixed, with which the (D) and (E) components are further mixed, and the (F) component is finally added to and mixed with the resultant mixture.

REFERENCES:
patent: 4261758 (1981-04-01), Wright et al.
patent: 4973623 (1990-11-01), Haugsby et al.
patent: 5260372 (1993-11-01), Toporcer et al.
patent: 5525660 (1996-06-01), Shiono et al.

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