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    • 23. 发明专利
    • FR2800743A1
    • 2001-05-11
    • FR9914316
    • 1999-11-09
    • RHODIA CHIMIE SA
    • BRANLARD PAULGEORGE CATHERINELEUCI CHRISTINE
    • C08K3/22C08K3/34H01B3/46H01B7/295C08L83/04C08J3/24C08K3/36C08K13/02C09D183/04
    • The invention concerns polyorganosiloxane compositions vulcanisable by hot process into silicone elastomers useful in particular for making electric wires or cables displaying an enhanced reaction to fire, containing (all the parts being expressed by weight): 100 parts of an ingredient (a) consisting in at least a polyorganosiloxane polymer; 5 to 80 parts of an ingredient (b) consisting in at least a reinforcing filler; 0.2 to 8 parts of and ingredient (c) consisting in an organic peroxide; 8 to 30 parts of an ingredient (d) consisting in mica; 6 to 20 parts of an ingredient (e) consisting in zinc oxide; 0 to 15 parts of an ingredient (f) consisting in at least an additive normally used in polyorganosiloxane compositions vulcanisable by hot process. Said compositions are characterised in that they further contain, as other indispensable ingredients: 0.0010 to 0.02 part of an ingredient (g) consisting in platinum, a platinum compound and/or a platinum complex; 2 to 10 parts of an ingredient (h) consisting in titanium oxide; and 50 to 120 parts of an ingredient (i) consisting in at least a packing filler.