Claims
- 1. A process for the preparation of a coatable (co)polymer of ethylene, comprising radical (co)polymerizing ethylene, or admixture thereof with at least one ester of an unsaturated carboxylic acid, in the presence of an effective chain-transfer amount of at least one unconjugated diene having an acyclic backbone chain.
- 2. The process as defined by claim 1, carried out in the presence of at least one free radical initiator, under a pressure ranging from about 800 to 2,500 bars and at a temperature ranging from about 140.degree. to 280.degree. C.
- 3. The process as defined by claim 1, carried out in the presence of from about 0.05% to 1% by weight of said at least one unconjugated diene, relative to the weight of the (co)monomers subjected to (co)polymerization.
- 4. The process as defined by claim 3, carried out in the presence of from about 0.1% to 0.4% by weight of said at least one unconjugated diene.
- 5. The process as defined by claim 1, carried out in the presence of an additional chain-transfer agent.
- 6. The process as defined by claim 5, said additional chain-transfer agent comprising hydrogen, propane, butane, propene or but-1-ene.
- 7. The process as defined by claim 1, comprising radical homopolymerizing ethylene.
- 8. The process as defined by claim 1, comprising radical copolymerizing ethylene with at least one ester of an unsaturated carboxylic acid.
- 9. The process as defined by claim 8, said unsaturated carboxylic acid comprising a mono- or dicarboxylic acid.
- 10. The process as defined by claim 9, said unsaturated carboxylic acid comprising acrylic or methacrylic acid.
- 11. The process as defined by claim 8, comprising radical copolymerizing ethylene with at least one alkyl ester of an unsaturated carboxylic acid.
- 12. The process as defined by claim 8, comprising radical copolymerizing ethylene with at least one ester of an unsaturated carboxylic acid and at least one other comonomer copolymerizable therewith.
- 13. The process as defined by claim 12, said at least one comonomer comprising an unsaturated dicarboxylic acid anhydride, an unsaturated glycidyl monomer, an N-carboxyalkylimide of an unsaturated dicarboxylic acid or a polyol poly(meth)acrylate.
- 14. The ethylene (co)polymer product of the process as defined by claim 1.
- 15. A process for the preparation of a coatable (co)polymer of ethylene, comprising radical (co)polymerizing ethylene, or admixture thereof with at least one ester of an unsaturated carboxylic acid, in the presence of an effective chain-transfer amount of at least one unconjugated diene having an acyclic backbone chain comprising at least six carbon atoms.
- 16. A process for the preparation of a coatable (co)polymer of ethylene, comprising radical (co)polymerizing ethylene, or admixture thereof with at least one ester of an unsaturated carboxylic acid, in the presence of an effective chain-transfer amount of at least one unconjugated diene including hex-1,5-diene; deca-1,9-diene or 2-methylocta-1,7-diene.
Priority Claims (1)
Number |
Date |
Country |
Kind |
90 04504 |
Apr 1990 |
FRX |
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Parent Case Info
This application is a continuation, of application Ser. No. 07/682,372, filed Apr. 9, 1991 pending.
US Referenced Citations (1)
Number |
Name |
Date |
Kind |
4088811 |
Harris et al. |
May 1978 |
|
Foreign Referenced Citations (1)
Number |
Date |
Country |
0175318 |
Mar 1986 |
EPX |
Continuations (1)
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Number |
Date |
Country |
Parent |
682372 |
Apr 1991 |
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