Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – At least one aryl ring which is part of a fused or bridged...
Patent
1992-02-18
1993-08-17
Bleutge, John C.
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
At least one aryl ring which is part of a fused or bridged...
524863, 524864, 528 42, 528 34, 528 17, 528 18, 525477, C08F28312, C08G 7716
Patent
active
052369978
ABSTRACT:
A room temperature-curable fluorosilicone rubber composition is disclosed, which is capable of giving a cured silicone rubber having excellent resistance against organic solvents and petroleums withhigh curability despite the high fluorine content which may cause steric hindfrance against the curing reaction due to the bulkiness of the fluorine-containing substituent groups. Different from conventional fluorine-containing diorganopolysiloxanes, in which the fluorine-containing substituent groups are bonded to the silicon atoms at random positions throughout the molecule, several silicon atoms from each of the molecular chain ends of the diorganopolysiloxane as the principal ingredient of the inventive composition are free from fluorine-containing substituent groups so that the crosslinking reaction with the silanolic hydroxy groups bonded to the terminal silicon atoms is not disturbed by the fluorine-containing groups in the vicinity of the terminal silanol groups.
REFERENCES:
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patent: 4988758 (1991-01-01), Fukuda et al.
patent: 5073422 (1991-12-01), Konno et al.
Bleutge John C.
Glass Margaret W.
Shin-Etsu Chemical Co. , Ltd.
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