The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Sep. 14, 1999
Filed:
Feb. 17, 1998
Yasuhiro Hosoi, Tokuyama, JP;
Osamu Iwamoto, Tokuyama, JP;
Tokuyama Corporation, Yamaguchi-ken, JP;
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/nm.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.