Dental soft relining material, denture and method of repairing d

Details Dental soft relining material, denture and method of repairing d Dental soft relining material, denture and method of repairing d

1998-02-17

1999-09-14

Dawson, Robert

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

Synthetic resins

Processes of preparing a desired or intentional composition...

524731, 4331681, A61C 1323

Patent

active

059524006

ABSTRACT:
The present invention provides a composition having sufficient strength and softness and excellent resistance against coloring, which is suited for use as a dental soft relining material. The present invention relates to a dental soft relining material which comprises 100 parts by weight of an organopolysiloxane (A) having in a molecule thereof at least two organic groups with a terminal unsaturated bond, an organohydrogenpolysiloxane (B) having in a molecule thereof at least three SiH groups, in such an amount that a ratio of the total number of SiH groups of (B) to the total number of terminal unsaturated bonds present in the organopolysiloxane molecules of (A) is from 0.5 to 5, a catalytic amount of a catalytic substance (C) for hydrosilylation reaction, 10 to 300 parts by weight of polyorganosilsesquioxane particles (D), and 1 to 50 parts by weight of hydrophobic silica particles (E) having a number of silanol groups per a unit surface area of not greater than 1
m.sup.2 so that a hydrophobic index is not smaller than 60%, said hydrophobic index being defined by a minimum methanol amount (concentration) necessary for completely suspending said silica particles in a methanol aqueous solution.

REFERENCES:
patent: 5513987 (1996-05-01), Hosoi et al.
patent: 5830951 (1998-11-01), Fiedler
Database WPI, Week 9512, Derwent Publications Ltd., London, GB and JP 07 010 524A (Tokuyama Soda), Jan. 13, 1995.

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