Method of making silethynyl polymers

Details Method of making silethynyl polymers Method of making silethynyl polymers

1990-12-31

1993-06-01

Schofer, Joseph L.

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

Synthetic resins

From silicon reactant having at least one...

526279, 528 12, 528 14, 528 32, C08G 7760

Patent

active

052161064

ABSTRACT:
A method of making silethynyl polymers having units of the general formula --(R.sub.2 SiC.tbd.C)-- wherein each R independently denotes a hydrogen atom, an alkyl, aryl or alkenyl group or a substituted alkyl, aryl or alkenyl group having up to 18 carbon atoms comprises adding a lithium salt of one or more diethynylsilanes of the general formula R.sub.2 Si(C.tbd.CH).sub.2 to one or more dihalosilanes of the general formula R.sub.2 SiX.sub.2 where X is a halogen atom and allowing the components to react. Copolymers with alternating units can be made. Linear polymers are made preferentially. Limiting the use of solvent increases the percentage of linear polymers produced.

REFERENCES:
patent: 3699140 (1972-10-01), Chandra et al.
patent: 4866153 (1989-09-01), Bortolin
Odian, G., "Principles of Polymerization", 3d Ed., 467 (1991), Wiley (New York).
Miller, M. L., "The Structures of Polymers", 2d Printing, 437, 458-9 (1968) Reinhold (New York).
66448q--Chemical Abstract, Voronkov et al, USSR, 1973, 42(6), pp. 1408-1409.
67034u--Chemical Abstract, Preparation of ethynylsilanes, J. Organometal Chem. 1970, 21(1), pp. 83-90.

Affiliated with

Also associated with

Rating

Method of making silethynyl polymers does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Method of making silethynyl polymers, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method of making silethynyl polymers will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1815621