Claims
- 1. An organosilicon polymer having recurring silylene-1,3-butadiyne units of the formula: ##STR5## wherein X is an integer from 20 to 500 and R and R' are organic moieties or hydrogen.
- 2. The polymer of claim 1 wherein R and R' are selected from the group consisting of hydrogen, C.sub.1 to C.sub.20 alkyl, and C.sub.7 to C.sub.20 alkylaryl.
- 3. The polymer of claim 1 where R and R' are hydrogen.
- 4. The polymer of claim 1 wherein R and R' are C.sub.1 to C.sub.5 alkyl.
- 5. The polymer of claim 4 wherein R and R' are methyl.
- 6. The polymer of claim 1 wherein R is methyl and R' is phenyl.
- 7. The polymer of claim 1 having a molecular weight within the range of from 2,000 to about 120,000.
- 8. The polymer of claim 7 having a weight average molecular weight of about 20,000.
- 9. An organosilicon polymer having recurring disilyleneacetylene units of the formula: ##STR6## where X is an integer from 20 to 500 and R is an organic moiety or hydrogen.
- 10. The polymer of claim 9 wherein R is selected from the group consisting of hydrogen, C.sub.1 to C.sub.20 alkyl, and C.sub.7 to C.sub.20 alkylaryl.
- 11. The polymer of claim 9 wherein R is hydrogen.
- 12. The polymer of claim 9 wherein R is C.sub.1 to C.sub.5 alkyl.
- 13. The polymer of claim 12 wherein R is methyl.
- 14. The polymer of claim 9 having a molecular weight within the range of from 2,000 to about 120,000.
- 15. The polymer of claim 14 having a weight average molecular weight of about 20,000.
- 16. A method of preparing organosilicon polymers having recurring silylene-1,3-butadiyne units of the formula: ##STR7## wherein R and R' are organic moieties or hydrogen and X is an integer from 20 to 500, comprising:
- reacting hexachlorobutadiene with normal butyllithium to prepare dilithiobutadiyne; and
- reacting said dilithiobutadiyne with a dichlorosilane of the formula: RR'SiCl.sub.2, wherein R and R' are as previously defined.
- 17. The process of claim 16 wherein R and R' are 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.
- 18. The process of claim 16 wherein the reaction is conducted in a reaction promoting organic solvent.
- 19. The process of claim 18 wherein said solvent is selected from the group consisting of tetrahydrofuran, diethylether, aliphatic and aromatic hydrocarbons.
- 20. A method of preparing organosilicon polymers having recurring disilylene-1,3-butadiyne units of the formula: ##STR8## wherein R is an organic moiety or hydrogen and X is an integer from 20 to 500, comprising:
- reacting hexachlorobutadiene with normal butyllithium to prepare dilithiobutadiyne; and
- reacting said dilithiobutadiyne with a dichlorosilane of the formula: ClR.sub.2 SiSiR.sub.2 Cl, wherein R is as previously defined.
- 21. The process of claim 20 wherein R is 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.
- 22. The process of claim 21 wherein the reaction is conducted in a reaction promoting organic solvent.
- 23. The process of claim 22 wherein said solvent is selected from the group consisting of tetrahydrofuran, diethylether, aliphatic and aromatic hydrocarbons.
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)