Storage stable and room temperature-curable organopolysiloxane c

Details Storage stable and room temperature-curable organopolysiloxane c Storage stable and room temperature-curable organopolysiloxane c

Filed on

1988-03-03

Date issued

1989-11-07

Examiner

Briggs, Sr., Wilbert J.

Patent Class

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

SubClass

Synthetic resins

SubSubClass

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

Other Related Categories

524741, 524751, 524752, 524773, 528 15, 528 31, 528 32, 525478, C08L 513, C08L 8304

Type

Patent

Status

active

Patent number

048793396

Description

ABSTRACT:
A room temperature-curable organopolysiloxane composition is proposed which is useful as a material for imprinting or blocking of forms of, for example, medical and dental prostheses without the problem of curing retardation or incomplete curing. The composition comprises a vinyl-containing organopolysiloxane, organohydrogenpolysiloxane, platinum catalyst, inorganic filler, liquid paraffin or petrolatum and antioxidant. The antioxidant serves to protect the liquid paraffin or petrolatum from oxidation to produce oxidized compounds which may deactivate the platinum catalyst to cause curing retardation or incomplete curing.

REFERENCES:
patent: 4035453 (1977-07-01), Hittmair et al.
patent: 4214000 (1980-07-01), Papa
patent: 4273902 (1981-06-01), Tomioka et al.
patent: 4359565 (1982-11-01), Puppe et al.
patent: 4568707 (1986-02-01), Voigt et al.
patent: 4614758 (1986-09-01), Schwabe et al.
Solomons, T. W. G., "Organic Chemistry", N.Y., J. Wiley & Sons, 1980, pp. 229-232.
Ritchie, P. D., Plasticisers, Stabilisers and Fillers, London, Iliffe Books Ltd., 1972, pp. 246-247.

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