GB1343730A - Cross-linking of olefin polymers - Google Patents
Cross-linking of olefin polymersInfo
- Publication number
- GB1343730A GB1343730A GB2714771A GB2714771A GB1343730A GB 1343730 A GB1343730 A GB 1343730A GB 2714771 A GB2714771 A GB 2714771A GB 2714771 A GB2714771 A GB 2714771A GB 1343730 A GB1343730 A GB 1343730A
- Authority
- GB
- United Kingdom
- Prior art keywords
- aryl
- hydrogen
- butylperoxy
- bis
- cinnamylidene
- 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.)
- Expired
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08F255/00—Macromolecular compounds obtained by polymerising monomers on to polymers of hydrocarbons as defined in group C08F10/00
Landscapes
- Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Processes Of Treating Macromolecular Substances (AREA)
- Compositions Of Macromolecular Compounds (AREA)
Abstract
1343730 Crosslinking olefin polymers SIEMENS AG 19 April 1971 [17 April 1970] 27147/71 Addition to 1294154 Heading C3P Olefin polymers are crosslinked by heating in the presence of a ditertiary peroxide and 0À1 to 20 weight per cent, based on the polymer, of a radical transfer agent which is a polymethine of one of formulae wherein R 1 is aryl, R 2 , R 3 and R 4 are aryl or hydrogen, n is 0 or 1, R<SP>1</SP> 1 , R<SP>1</SP> 2 , R<SP>1</SP> 3 and R<SP>1</SP> 4 are aryl or hydrogen or R<SP>1</SP> 1 and R<SP>1</SP> 2 and/or R<SP>1</SP> 3 and R<SP>1</SP> 4 can together form the remaining atoms of an aryl ring, and R 5 and R 6 are hydrogen or aryl or when R 5 is hydrogen R 6 may be a heterocyclic group which does not contain reactive hydrogen bonded to a hetero atom. The polymer may be a polyethylene or ethylene/propylene copolymer rubber. An acenaphthylene compound may also be present as transfer agent/stabilizer. Specified peroxides are dicumyl peroxide, di-t.butyl peroxide, 2,5-bis-t.butylperoxy-2,5-dimethylhexane, 1,3-bis(t.butylperoxy)isopropylbenzene, n-butyl-4,4-bis(t.butylperoxy)valerate and 2,2- bis(t.butylperoxy)butane. Specified transfer agents are 1-phenylbutadiene-1,3, 1,4-diphenylbutadiene-1,3, phenyl fulvene, diphenyl fulvene, #-phenyl- and #,#<SP>1</SP>-diphenyl benzofulvene, 9- phenyl- or 9-diphenyl-methylene fluorenes, furfurylindene-cyclopentadiene, cinnamylidene fluorene, cinnamylidene fulvene and cinnamylidene indene. The transfer agents and other additives may be added to the polymer as a suspension or solution in an inert liquid medium, e.g. chlorinated biphenyl. The crosslinked products may be used for insulating electrical components, e.g. by curing thereon in a high boiling liquid such as a molten salt. Examples describe the crosslinking of (1,2 and 4) polyethylene and (3) ethylene/propylene rubber.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19691952073 DE1952073C3 (en) | 1969-10-16 | 1969-10-16 | Process for crosslinking polyolefins and olefin copolymers |
DE19702018423 DE2018423C3 (en) | 1969-10-16 | 1970-04-17 | Process for crosslinking polyolefins and olefin copolymers |
Publications (1)
Publication Number | Publication Date |
---|---|
GB1343730A true GB1343730A (en) | 1974-01-16 |
Family
ID=25758013
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB2714771A Expired GB1343730A (en) | 1969-10-16 | 1971-04-19 | Cross-linking of olefin polymers |
Country Status (4)
Country | Link |
---|---|
DE (1) | DE2018423C3 (en) |
FR (1) | FR2089821A6 (en) |
GB (1) | GB1343730A (en) |
NL (1) | NL7103333A (en) |
-
1970
- 1970-04-17 DE DE19702018423 patent/DE2018423C3/en not_active Expired
-
1971
- 1971-03-12 NL NL7103333A patent/NL7103333A/xx unknown
- 1971-04-16 FR FR7113633A patent/FR2089821A6/fr not_active Expired
- 1971-04-19 GB GB2714771A patent/GB1343730A/en not_active Expired
Also Published As
Publication number | Publication date |
---|---|
DE2018423C3 (en) | 1974-08-22 |
DE2018423A1 (en) | 1971-11-11 |
DE2018423B2 (en) | 1974-01-17 |
NL7103333A (en) | 1971-10-19 |
FR2089821A6 (en) | 1972-01-07 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
PS | Patent sealed | ||
PCNP | Patent ceased through non-payment of renewal fee |