Claims
- 1. A process of preparing a linear polydivinylbenzene having recurring units of Formula (A), ##STR22## and a number average molecular weight of about 500 to about 1,000,000, which comprises adding lithium diisopropylamide and divinylbenzene to an inert polar solvent in the presence of diisopropylamine.
- 2. The process of claim 1, wherein the divinylbenzene is p-divinylbenzene.
- 3. The process of claim 1, wherein the divinylbenzene is m-divinylbenzene.
- 4. The process of claim 1, wherein the amount of the lithium diisopropylamide is about 0.001 to about 1.0 mole per mole of the divinylbenzene.
- 5. The process of claim 1, wherein the amount of the diisopropylamine is about 0.5 to about 50 moles per mole of the lithium diisopropylamide.
- 6. The process of claim 1, wherein the volume ratio of the inert polar solvent to the divinylbenzene is about 1 to about 50.
- 7. The process of claim 1, wherein the inert polar solvent is selected from the group consisting of tetrahydrofuran, dimethyl sulfoxide, N,N-dimethylformamide, hexamethylenephosphoric triamide, N-methyl-2-pyrrolidone and N,N-dimethylacetamide.
- 8. The process of claim 7, wherein the inert polar solvent is tetrahydrofuran.
- 9. The process of claim 1, wherein the lithium diisopropylamide is prepared from diisopropylamine and a C.sub.1-20 alkyl lithium.
- 10. The process of claim 9, wherein the C.sub.1-20 alkyl lithium is n-butyl lithium.
- 11. The process of claim 4, wherein the amount of the lithium diisopropylamide is about 0.01 to about 0.5.
- 12. The process of claim 5, wherein the amount of the diisopropylamine is about 1.5 to about 20.
Priority Claims (2)
Number |
Date |
Country |
Kind |
54/48965 |
Apr 1979 |
JPX |
|
54/48966 |
Apr 1979 |
JPX |
|
Parent Case Info
This is a division of Application Ser. No. 58,595, filed July 18, 1979 now abandoned.
US Referenced Citations (9)
Divisions (1)
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Number |
Date |
Country |
Parent |
58595 |
Jul 1979 |
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