Claims
- 1. A method of preparing organosilicon polymers having recurring silyleneacetylene units of the formula: ##STR5## wherein R and R' are organic moieties selected from the group consisting of hydrogen, C.sub.1 to C.sub.20 alkyl, C.sub.6 to C.sub.20 aryl, and C.sub.7 to C.sub.20 alkylaryl and x is an integer from 20 to 500, comprising:
- reacting trichloroethylene with normal butyllithium to prepare dilithioacetylene; and
- reacting said dilithioacetylene with a dichlorosilane of the formula: RR'SiCl.sub.2, wherein R and R' are as previously defined.
- 2. The process of claim 1 wherein the amount of each reactant is at least a stoichiometric amount.
- 3. The process of claim 2 wherein the reaction is conducted in a suitable reaction promoting organic solvent.
- 4. The process of claim 2 wherein the reaction solvent is selected from the group of aliphatic and aromatic hydrocarbons.
- 5. The process of claim 3 wherein said solvent is selected from the group consisting of tetrahydrofuran, diethylether, benzene and hexane.
- 6. A method of preparing organosilicon polymers having recurring disilyleneacetylene units of the formula: ##STR6## wherein R is an organic moiety selected from the group consisting of hydrogen, C.sub.1 to C.sub.20 alkyl, C.sub.6 to C.sub.20 aryl, and C.sub.7 to C.sub.20 alkylaryl and X is an integer from 20 to 500, comprising:
- reacting trichloroethylene with normal butyllithium to prepare dilithioacetylene; and
- reacting said dilithioacetylene with a dichlorosilane of the formula: ClR.sub.2 SiSiR.sub.2 Cl, wherein R is as previously defined.
- 7. The process of claim 6 wherein the amount of each reactant is at least a stoichiometric amount.
- 8. The process of claim 7 wherein the reaction is conducted in a suitable reaction promoting organic solvent.
- 9. The process of claim 8 wherein the reaction solvent is selected from the group of aliphatic and aromatic hydrocarbons.
- 10. The process of claim 8 wherein said solvent is selected from the group consisting of tetrahydrofuran, diethylether, benzene and hexane.
GRANT REFERENCE
This invention was made with Government support under Contract No. W-7405-ENG-82 awarded by the Department of Energy. The Government has certain rights in the invention.
US Referenced Citations (10)
Foreign Referenced Citations (1)
Number |
Date |
Country |
914935 |
Jan 1963 |
GBX |