GB1092225A - Improvements in or relating to the extrusion of chemically crossed linked polymer or copolymers - Google Patents

Improvements in or relating to the extrusion of chemically crossed linked polymer or copolymers

Info

Publication number
GB1092225A
GB1092225A GB47662/65A GB4766265A GB1092225A GB 1092225 A GB1092225 A GB 1092225A GB 47662/65 A GB47662/65 A GB 47662/65A GB 4766265 A GB4766265 A GB 4766265A GB 1092225 A GB1092225 A GB 1092225A
Authority
GB
United Kingdom
Prior art keywords
curing agent
butyl
polymer
further curing
curing agents
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
Application number
GB47662/65A
Inventor
Stanley George Foord
Walter Eric Simpson
Robert Kenneth Stapleton
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
STC PLC
Original Assignee
Standard Telephone and Cables PLC
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Standard Telephone and Cables PLC filed Critical Standard Telephone and Cables PLC
Priority to GB47662/65A priority Critical patent/GB1092225A/en
Priority to ES0333120A priority patent/ES333120A1/en
Priority to FR83278A priority patent/FR1499714A/en
Priority to NL6615853A priority patent/NL6615853A/xx
Priority to BE689539D priority patent/BE689539A/nl
Publication of GB1092225A publication Critical patent/GB1092225A/en
Expired legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J3/00—Processes of treating or compounding macromolecular substances
    • C08J3/24—Crosslinking, e.g. vulcanising, of macromolecules
    • C08J3/243—Two or more independent types of crosslinking for one or more polymers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/022—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor characterised by the choice of material
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K5/00—Use of organic ingredients
    • C08K5/04—Oxygen-containing compounds
    • C08K5/14—Peroxides
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/03—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor characterised by the shape of the extruded material at extrusion
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/03—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor characterised by the shape of the extruded material at extrusion
    • B29C48/05—Filamentary, e.g. strands
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
    • B29K2101/00—Use of unspecified macromolecular compounds as moulding material
    • B29K2101/10—Thermosetting resins
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
    • B29K2301/00—Use of unspecified macromolecular compounds as reinforcement
    • B29K2301/10—Thermosetting resins
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J2323/00—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers
    • C08J2323/02—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers not modified by chemical after treatment

Landscapes

  • Chemical & Material Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Organic Chemistry (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Extrusion Moulding Of Plastics Or The Like (AREA)
  • Organic Insulating Materials (AREA)
  • Compositions Of Macromolecular Compounds (AREA)

Abstract

A process for producing cross-linked olefin polymer extrudates comprises blending the polymer with a predetermined mixture of a minor proportion of a curing agent and a major proportion of a further curing agent, said curing agents decomposing at different temperatures, heating the blend at least to a temperature at which the curing agent present in minor proportion will decompose quickly but below that at which the further curing agent will decompose such that a controlled proportion of cross-linking occurs either prior to or during extrusion, extruding the partially cross-linked polymer at a temperature below that at which the further curing agent decomposes and heating the extrudate to the decomposition temperature of the further curing agent. The preferred polymer is polyethylene. Many suitable curing agents are listed including lauroyl, benzoyl, p-chlorobenzoyl, 2,4-dichlorobenzoyl and octanoyl peroxides as minor curing agents, and t. butyl perbenzoate, t. butyl peracetate, di-t. butyl diperphthalate, dicumyl peroxide, 2,2-bis (t. butylperoxy) butane and t. butyl cumyl peroxide as further curing agents. Fillers, e.g. silica and carbon black, and anti-oxidants, e.g. zinc mercaptobenzimidazole, 2,2,4 - trimethyl - 2 - dihydroquinoline and nickel dibutyl dithiocarbamate, may be present and the products may be used for insulating high-voltage cables.
GB47662/65A 1965-11-10 1965-11-10 Improvements in or relating to the extrusion of chemically crossed linked polymer or copolymers Expired GB1092225A (en)

Priority Applications (5)

Application Number Priority Date Filing Date Title
GB47662/65A GB1092225A (en) 1965-11-10 1965-11-10 Improvements in or relating to the extrusion of chemically crossed linked polymer or copolymers
ES0333120A ES333120A1 (en) 1965-11-10 1966-11-05 Improvements in or referring to the extrusion of polymers or copolymers quimically entrelazados. (Machine-translation by Google Translate, not legally binding)
FR83278A FR1499714A (en) 1965-11-10 1966-11-10 Advanced process for extruding crosslinked polymers
NL6615853A NL6615853A (en) 1965-11-10 1966-11-10
BE689539D BE689539A (en) 1965-11-10 1966-11-10

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB47662/65A GB1092225A (en) 1965-11-10 1965-11-10 Improvements in or relating to the extrusion of chemically crossed linked polymer or copolymers

Publications (1)

Publication Number Publication Date
GB1092225A true GB1092225A (en) 1967-11-22

Family

ID=10445819

Family Applications (1)

Application Number Title Priority Date Filing Date
GB47662/65A Expired GB1092225A (en) 1965-11-10 1965-11-10 Improvements in or relating to the extrusion of chemically crossed linked polymer or copolymers

Country Status (5)

Country Link
BE (1) BE689539A (en)
ES (1) ES333120A1 (en)
FR (1) FR1499714A (en)
GB (1) GB1092225A (en)
NL (1) NL6615853A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4202790A (en) 1978-06-26 1980-05-13 Hercules Incorporated Peroxide blends
US7214724B2 (en) 2001-12-17 2007-05-08 Henkel Kommanditgesellschaft Auf Aktien Method for cross-linking a foamable plastic

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA1047200A (en) * 1974-11-27 1979-01-23 Donald L. Schober Compositions with peroxides and process for avoiding scorching of ethylene polymer composition
FR2416106A1 (en) * 1978-02-02 1979-08-31 Silec Liaisons Elec METHOD AND DEVICE FOR EXTRUSION OF A CROSS-LINKED PRODUCT

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4202790A (en) 1978-06-26 1980-05-13 Hercules Incorporated Peroxide blends
US7214724B2 (en) 2001-12-17 2007-05-08 Henkel Kommanditgesellschaft Auf Aktien Method for cross-linking a foamable plastic

Also Published As

Publication number Publication date
ES333120A1 (en) 1967-09-16
FR1499714A (en) 1967-10-27
NL6615853A (en) 1967-05-11
BE689539A (en) 1967-05-10

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