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NON-DRIPPING COMPOSITION OF SILICONE ELASTOMERS CROSSLINKABLE BY POLYADDITION AND APPLICATION THEREOF FOR IN SITU BONDING AND AS A GLUE, ESPECIQALLY IN SADDLERY TRADE
NON-DRIPPING COMPOSITION OF SILICONE ELASTOMERS CROSSLINKABLE BY POLYADDITION AND APPLICATION THEREOF FOR IN SITU BONDING AND AS A GLUE, ESPECIQALLY IN SADDLERY TRADE
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机译:可极化的可交联硅弹性体的非滴涂组成及其在胶黏剂贸易中的应用
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摘要
A non-drip, preferably self-adhesive, silicone elastomer composition crosslinkable by polyaddition, such as those polyorganosilanes (POS) bearing CSUB2/SUB-CSUB6/SUB≡Si-alkenyl units and ≡Si-H units but excluding fluorinated POS. The composition includes at least a thixotropic additive containing at least a fluorinated resin, preferably based on polyfluoroethylene (PTFE). The composition may be prepared from a Si-Vi polydimethylsiloxane (PDMS) and a Si-H PDMS crosslinked by platinum catalysis. Polytetrafluorethylene, a filler, particularly one containing silicone, optionally a ternary adherence promoter such as vinyltrimethosilane/glycidoxypropyltrimethoxysilane/butyl orthotitanate, and other typical additives may be added to the composition. The composition (not excluding the fluorinated POS as a possible constituent in the composition) may be used to produce joints in situ and/or as an adhesive, particularly in upholstery.
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