Polyether-moulding material, process for its preparation and...

Details Polyether-moulding material, process for its preparation and... Polyether-moulding material, process for its preparation and...

A - Human Necessities

61

K

400/5102, 400/53

A61K 6/10 (2006.01)

Patent

CA 2002807

A polyether-impression material comprising components (a) a polyether, which has at least two optionally substituted vinyl- and/or allyl-end groups, (b) an SiH component, (c) a platinum catalyst, and optionally (d) the usual additives characterized in that the SiH-component (b) can be obtained by the reaction of an at least bi-functional allyl- or vinyl-hydrocarnon compound, the hydrocarbon radical of which, without taking account of the allyl- or vinyl-groups and the optionally present alkylene ether groups, has 6 to 30 C-atoms and contains at least one aromatically unsaturated, heterocyclic, or cycloaliphatic ring, with at least one mole per vinyl- or allyl-group of an at least bi-functional SiH-compound of the formula: Image 24 or Image in which e = 0 to 8, g = 0 to 8, h =0 to 4 and R4 to R10 are the same or different, and are each H, methyl or : ethyl, with the proviso that at least 1 and at the most 5 of R4 to R10 are H, wherein g and h cannot simultaneously be O, and wherein at least the components (b) and (c) lie spatially separated from each other.

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