Polycarbosilanes and process for preparing them

Details Polycarbosilanes and process for preparing them Polycarbosilanes and process for preparing them

1991-06-04

1993-04-20

Marquis, Melvyn I.

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

From silicon reactant having at least one...

528 16, 528 17, 528 18, 528 19, 528 23, 528 25, 528 33, 528 21, 528 10, 525474, 525475, C08G 77106

Patent

active

052044343

ABSTRACT:
Polycarbosilanes having Si units which are linked by phenyl-substituted methylene bridges or by partially or completely fluorinated hydrocarbon bridges. These polycarbosilanes are obtained by a Grignard polycondensation reaction. If phenyl substituents are present on the silicon atoms of the polycarbosilanes, they may also optionally be exchanged for halogen atoms in additional halogenating reactions, so that polycarbosilanes can be prepared which are both fluorinated on the hydrocarbon bridges and halogenated (particularly fluorinated) on the silicon atoms.

REFERENCES:
patent: 4761458 (1988-08-01), Burns et al.
patent: 4777234 (1988-10-01), Litt et al.
patent: 5087685 (1992-02-01), Sartori et al.
patent: 5132375 (1992-07-01), Sartori et al.
Morrison and Boyd, Organic Chemistry, 3rd ed., pp. 80 to 83 (1973).
Chemical Abstracts 88(20):137320r (Podol'skii et al.).
Chemical Abstracts 81(12):64265v (Podol'skii et al.).
Chemical Abstracts 110(25):231692h (Bacque et al.).

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