| 摘要 |
<p>1. Dimensionally stable impression compositions and duplicating compositions which undergo crosslinking at ambient temperature by an addition reaction, are based on polysiloxane and contain a) organopolysiloxanes possessing two or more vinyl groups in the molecule, b) if appropriate, organopolysiloxanes without reactive groups, c) organohydrogenopolysiloxanes possessing two or more Si-H groups in the molecule, d) a catalyst, e) fillers and, if appropriate, other customary additives, auxiliaries and colorants, characterised in that the liquid polysiloxane components a) - c) contain not more than 1.5% by weight of volatile oligomers.</p> |
