Patent ID: 6884828

Claim:
A dental impression or doubling composition, comprising A) alkoxysilyl-functional polyethers with linear or branched main chains with an average molecular weight (Mn) of 800 to 20,000, containing 20 to 95 weight percent of polyether groups and 0.2 to 25 weight percent of SiR 1 R 2 R 3 alkoxysilyl groups, in which R 1 , R 2 and R 3 , independently of one another, are hydrogen, alkyl or alkoxy, and an amount of urethane groups up to 10 weight percent and 0 weight percent of urea groups, and B) a mixture, containing water and organic acids, inorganic acids or both in a ratio by weight of 1:0.01 to 1:40.