CA2022312A1 - Tree resistant compositions - Google Patents
Tree resistant compositionsInfo
- Publication number
- CA2022312A1 CA2022312A1 CA 2022312 CA2022312A CA2022312A1 CA 2022312 A1 CA2022312 A1 CA 2022312A1 CA 2022312 CA2022312 CA 2022312 CA 2022312 A CA2022312 A CA 2022312A CA 2022312 A1 CA2022312 A1 CA 2022312A1
- Authority
- CA
- Canada
- Prior art keywords
- copolymer
- comonomers
- hydrocarbyl aluminum
- ethylene
- density
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Landscapes
- Transition And Organic Metals Composition Catalysts For Addition Polymerization (AREA)
- Addition Polymer Or Copolymer, Post-Treatments, Or Chemical Modifications (AREA)
Abstract
A water tree resistant composition comprising:
(a) a copolymer of at least the two comonomers, ethylene and 4-methyl-1-pentene, said copolymer having a density no greater than about 0.920 gram per cubic centimeter; or (b) a copolymer of at least the two comonomers, ethylene and 1-octene, said copolymer having a density no greater than about 0.920 gram per cubic centimeter; or (c) the copolymer of (a) or (b) grafted with a hydrolyzable vinyl silane, the copolymers of (a) and (b) being produced by contacting the relevant comonomers, under polymerization conditions, with (i) a catalyst system containing a catalyst precursor comprising magnesium, titanium, a halogen, and an electron donor, and a hydrocarbyl aluminum cocatalyst or (ii) a catalyst system containing a catalyst precursor comprising vanadium an electron donor, and a hydrocarbyl aluminum halide; a hydrocarbyl aluminum cocatalyst; and a halogen substituted lower alkane promoter.
(a) a copolymer of at least the two comonomers, ethylene and 4-methyl-1-pentene, said copolymer having a density no greater than about 0.920 gram per cubic centimeter; or (b) a copolymer of at least the two comonomers, ethylene and 1-octene, said copolymer having a density no greater than about 0.920 gram per cubic centimeter; or (c) the copolymer of (a) or (b) grafted with a hydrolyzable vinyl silane, the copolymers of (a) and (b) being produced by contacting the relevant comonomers, under polymerization conditions, with (i) a catalyst system containing a catalyst precursor comprising magnesium, titanium, a halogen, and an electron donor, and a hydrocarbyl aluminum cocatalyst or (ii) a catalyst system containing a catalyst precursor comprising vanadium an electron donor, and a hydrocarbyl aluminum halide; a hydrocarbyl aluminum cocatalyst; and a halogen substituted lower alkane promoter.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CA 2022312 CA2022312C (en) | 1989-07-26 | 1990-07-25 | Tree resistant compositions |
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US38570289A | 1989-07-26 | 1989-07-26 | |
US7-385,702 | 1989-07-26 | ||
CA 2022312 CA2022312C (en) | 1989-07-26 | 1990-07-25 | Tree resistant compositions |
Publications (2)
Publication Number | Publication Date |
---|---|
CA2022312A1 true CA2022312A1 (en) | 1991-01-27 |
CA2022312C CA2022312C (en) | 2001-05-01 |
Family
ID=25674242
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CA 2022312 Expired - Fee Related CA2022312C (en) | 1989-07-26 | 1990-07-25 | Tree resistant compositions |
Country Status (1)
Country | Link |
---|---|
CA (1) | CA2022312C (en) |
-
1990
- 1990-07-25 CA CA 2022312 patent/CA2022312C/en not_active Expired - Fee Related
Also Published As
Publication number | Publication date |
---|---|
CA2022312C (en) | 2001-05-01 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
EEER | Examination request | ||
MKLA | Lapsed |