CA2420244A1 - Improved processability butyl rubber and process for production thereof - Google Patents

Improved processability butyl rubber and process for production thereof Download PDF

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Publication number
CA2420244A1
CA2420244A1 CA002420244A CA2420244A CA2420244A1 CA 2420244 A1 CA2420244 A1 CA 2420244A1 CA 002420244 A CA002420244 A CA 002420244A CA 2420244 A CA2420244 A CA 2420244A CA 2420244 A1 CA2420244 A1 CA 2420244A1
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monomer
amount
multiolefin
butyl polymer
weight
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CA002420244A
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French (fr)
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CA2420244C (en
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Gabor Kaszas
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Arlanxeo Canada Inc
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Individual
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Priority claimed from CA002316741A external-priority patent/CA2316741A1/en
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Priority to CA002420244A priority Critical patent/CA2420244C/en
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    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08FMACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
    • C08F210/00Copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond
    • C08F210/04Monomers containing three or four carbon atoms
    • C08F210/08Butenes
    • C08F210/10Isobutene
    • C08F210/12Isobutene with conjugated diolefins, e.g. butyl rubber

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  • Chemical & Material Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Organic Chemistry (AREA)
  • Addition Polymer Or Copolymer, Post-Treatments, Or Chemical Modifications (AREA)
  • Polymerisation Methods In General (AREA)

Abstract

A butyl polymer having improved processability is described, together with a process for production thereof. The butyl polymer derived from a reaction mixture which contains: (i) a monomer mixture comprising a C4 to C7 monoolef in monomer (preferably isobutylene) and a C4 to C14 multiolefin monomer (preferably isoprene); (ii) a multiolefin cross-linking agent (preferably divinyl benzene); and (iii) a chain transfer agent (preferably diisobutylene (2,4,4-trimethyl-1-pentene)). The subject butyl polymer has an improved balance of cold flow, filler dispersion, extrusion rate and die swell.</SDOA B>

Claims (44)

1. A butyl polymer having improved processability, the butyl polymer being derived from a reaction mixture comprising:

(i) a monomer mixture comprising a C4 to C7 monoolefin monomer and a C4 to C14 multiolefin monomer or .beta.-pinene;

(ii) a multiolefin cross-linking agent; and (iii) a chain transfer agent.
2. The butyl polymer defined in claim 1, wherein the C4 to C7 monoolefin monomer is selected from the group comprising isobutylene, 2-methyl-1-butene, 3-methyl-1-butene, 2-methyl-2-butene, 4-methyl-1-pentene and mixtures thereof.
3. The butyl polymer defined in claim 2, wherein the C4 to C7 monoolefin monomer comprises isobutylene.
4. The butyl polymer defined in any one of claims 1 to 3, wherein the C4 to C14 multiolefin monomer is selected from the group comprising isoprene, butadiene, 2-methyl-butadiene, 2,4-dimethylbutadiene, piperyline, 3-methyl-1,3-pentadiene, 2,4-hexadiene, 2-neopentylbutadiene, 2-methly-1,5-hexadiene, 2,5-dimethly-2,4-hexadiene, 2-methyl-1,4-pentadiene, 2-methyl-1,6-heptadiene, cyclopentadiene, methylcyclopentadiene, cyclohexadiene, 1-vinyl-cyclo-hexadiene and mixtures thereof.
5. The butyl polymer defined in claim 4, wherein the C4 to C14 multiolefin monomer comprises isoprene.
6. The butyl polymer defined in any one of claims 1 to 5, wherein the monomer mixture comprises from about 80%
to about 99% by weight C4 to C7 monoolefin monomer and from about 1.0% to about 20% by weight C4 to C14 multiolefin monomer or .beta.pinene.
7. The butyl polymer defined in claim 6, wherein the monomer mixture comprises from about 85% to about 99% by weight C4 to C7 monoolefin monomer and from about 1.0% to about 15% by weight C4 to C14 multiolefin monomer or .beta.-pinene.
8. The butyl polymer defined in claim 7, wherein the monomer mixture comprises from about 95% to about 99% by weight C4 to C7 monoolefin monomer and from about 1% to about 5.0% by weight C4 to C14 multiolefin monomer or .beta.-pinene.
9. The butyl polymer defined in any one of claims 1 to 8, wherein the multiolefin crosslinking agent comprises a diolefinic hydrocarbon compound.
10. The butyl polymer defined in claim 9, wherein the multiolefin crosslinking agent is selected from the group comprising divinylbenzene, diisopropenylbenzene, divinyltoluene, divinylxylene and a C1 to C20 alkyl-substituted derivatives thereof.
11. The butyl polymer defined in claim 10, wherein the multiolefin crosslinking agent comprises divinylbenzene.
12. The butyl polymer defined in any one of claims 1 to 11, wherein the multiolefin crosslinking agent is present in the reaction mixture in an amount in the range of from about 0.01 % to about 3.0 % by weight based on the amount of the C4 to C7 monoolefin monomer in the monomer mixture.
13. The butyl polymer defined claim 12, wherein the multiolefin crosslinking agent is present in the reaction mixture in an amount in the range of from about 0.05 % to about 1.0 % by weight based on the amount of the C4 to C10 monoolefin monomer in the monomer mixture.
14. The butyl polymer defined in claim 13, wherein the multiolefin crosslinking agent is present in the reaction mixture in an amount in the range of from about 0.1 % to about 0.4 % by weight based on the amount of the C4 to C7 monoolefin monomer in the monomer mixture.
15. The butyl polymer defined in any one of claims 1 to 14, wherein the chain transfer agent is selected from the group comprising piperylene, 1-methylcycloheptene, 1-methylcyclo-pentene, 2-ethyl-1-hexene, 2,4,4-trimethyl-1-pentene, indene and mixtures thereof.
16. The butyl polymer defined in claim 15, wherein the chain transfer agent comprises 2,4,4-trimethyl-1-pentene.
17. The butyl polymer defined in any one of claims 1 to 16, wherein the chain transfer agent is present in the reaction mixture in an amount in the range of from about 0.01 % to about 2.0 % by weight based on the amount of the C4 to C7 monoolefin monomer in the monomer mixture.
18. The butyl polymer defined in claim 17, wherein the chain transfer agent is present in the reaction mixture in an amount in the range of from about 0.01 % to about 1.4 % by weight based on the amount of the C4 to C7 monoolefin monomer in the monomer mixture.
19. The butyl polymer defined in claim 18, wherein the chain transfer agent is present in the reaction mixture in an amount in the range of from about 0.05 % to about 0.5 % by weight based on the amount of the C4 to C7 monoolefin monomer in the monomer mixture.
20. The butyl polymer defined in any one of claims 1 to 19, wherein the polymer comprises a halogenated butyl polymer.
21. The butyl polymer defined in claim 20, wherein the polymer is brominated.
22. The butyl polymer defined in claim 20, wherein the polymer is chlorinated.
23. The butyl polymer defined in any one of claims 20 to 22, wherein the amount of halogen is in the range of from about 0.1 to about 8% by weight of the polymer.
24. The butyl polymer defined in claim 23, wherein the amount of halogen is in the range of from about 0.5 to about 4% by weight of the polymer.
25. The butyl polymer defined in claim 24, wherein the amount of halogen is in the range of from about 1.5 to about 3% by weight of the polymer.
26. A process for preparing a butyl polymer having improved processability, the process comprising the steps of contacting a reaction mixture comprising:

a monomer mixture comprising a C4 to C7 monoolefin monomer and a C4 to C14 multiolefin monomer;

a multiolefin cross-liking agent;
a chain transfer agent; and a catalyst system.
27. The process defined in claim 26, wherein the C4 to C7 monoolefin monomer is selected from the group comprising isobutylene, 2-methyl-1-butene, 3-methyl-1-butene, 2-methyl-2-butene, 4-methyl-1-pentene and mixtures thereof.
28. The process defined in claim 27, wherein the C4 to C7 monoolefin monomer comprises isobutylene.
29. The process defined in any one of claims 26 to 28, wherein the C4 to C14 multiolefin monomer is selected from the group comprising isoprene, butadiene, 2-methylbutadiene, 2,4-dimethylbutadiene, piperyline, 3-methyl-1,3-pentadiene, 2,4-hexadiene, 2-neopentylbutadiene, 2-methly-1,5-hexadiene, 2,5-dimethly-2,4-hexadiene, 2-methyl-1,4-pentadiene, 2-methyl-1,6-heptadiene, cyclopentadiene, methylcyclopentadiene, cyclohexadiene, 1-vinyl-cyclo-hexadiene and mixtures thereof.
30. The process defined in claim 29, wherein the C4 to C14 multiolefin monomer comprises isoprene.
31. The process defined in any one of claims 26 to 30, wherein the monomer mixture comprises from about 80% to about 99% by weight C4 to C7 monoolefin monomer and from about 1.0% to about 20% by weight C4 to C14 multiolefin monomer or .beta.-pinene.
32. The process defined in claim 31, wherein the monomer mixture comprises from about 85% to about 99% by weight C4 to C7 monoolefin monomer and from about 1.0% to about 15%
by weight C4 to C14 multiolefin monomer or .beta.-pinene.
33. The process defined in claim 32, wherein the monomer mixture comprises from about 95% to about 99% by weight C4 to C7 monoolefin monomer and from about 1% to about 5.0%
by weight C4 to C14 multiolefin monomer or .beta.-pinene.
34. The process defined in any one of claims 26 to 33, wherein the multiolefin crosslinking agent comprises a diolefinic hydrocarbon compound.
35. The process defined in claim 34, wherein the multiolefin crosslinking agent is selected from the group comprising divinylbenzene, diisopropenylbenzene, divinyltoluene, divinylxylene and a C1 to C20 alkyl-substituted derivatives thereof.
36. The process defined in any one of claims 26 to 33, wherein the multiolefin crosslinking agent comprises divinyl-benzene.
37. The process defined in any one of claims 26 to 33, wherein the multiolefin crosslinking agent is present in the reaction mixture in an amount in the range of from about 0.01 % to about 3.0 % by weight based on the amount of the C4 to C7 monoolefin monomer in the monomer mixture.
38. The process defined in claim 37, wherein the multiolefin crosslinking agent is present in the reaction mixture in an amount in the range of from about 0.05 % to about 1.0 % by weight based on the amount of the C4 to C7 monoolefin monomer in the monomer mixture.
39. The process defined in claim 38, wherein the multiolefin crosslinking agent is present in the reaction mixture in an amount in the range of from about 0.1 % to about 0.4 % by weight based on the amount of the C4 to C7 monoolefin monomer in the monomer mixture.
40. The process defined in any one of claims .cndot., wherein the chain transfer agent is selected from the group comprising piperylene, 1-methylcycloheptene, 1-methylcyclopentene, 2-ethyl-1-hexene, 2,4,4-trimethyl-1-pentene, indene and mixtures thereof.
41. The process defined in any one of claims 26 to 33, wherein the chain transfer agent comprises 2,4,4-trimethyl-1-pentene.
42. The process defined in any one of claims 26 to 33, wherein the chain transfer agent is present in the reaction mixture in an amount in the range of from about 0.01 % to about 2.0 % by weight based on the amount of the C4 to C7 monoolefin monomer in the monomer mixture.
43. The process defined in claim 42, wherein the chain transfer agent is present in the reaction mixture in an amount in the range of from about 0.05 % to about 1.4 %
by weight based on the amount of the C4 to C7 monoolefin monomer in the monomer mixture.
44. The process defined in claim 43, wherein the chain transfer agent is present in the reaction mixture in an amount in the range of from about 0.1 % to about 0.5 % by weight based on the amount of the C4 to C7 monoolefin monomer in the monomer mixture.
CA002420244A 2000-08-24 2001-08-21 Improved processability butyl rubber and process for production thereof Expired - Fee Related CA2420244C (en)

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Application Number Priority Date Filing Date Title
CA002420244A CA2420244C (en) 2000-08-24 2001-08-21 Improved processability butyl rubber and process for production thereof

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
CA002316741A CA2316741A1 (en) 2000-08-24 2000-08-24 Improved processability butyl rubber and process for production thereof
CA2,316,741 2000-08-24
CA002420244A CA2420244C (en) 2000-08-24 2001-08-21 Improved processability butyl rubber and process for production thereof
PCT/CA2001/001188 WO2002016452A1 (en) 2000-08-24 2001-08-21 Improved processability butyl rubber and process for production thereof

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CA2420244A1 true CA2420244A1 (en) 2002-02-28
CA2420244C CA2420244C (en) 2009-11-17

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2005080452A1 (en) * 2004-02-23 2005-09-01 Lanxess Inc. Peroxide curable rubber compound containing high-isoprene butyl rubber

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2005080452A1 (en) * 2004-02-23 2005-09-01 Lanxess Inc. Peroxide curable rubber compound containing high-isoprene butyl rubber

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CA2420244C (en) 2009-11-17

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