IT1071581B - Procedimento congiunto di reticolazione espansione ed estrusione di una poliolefina ramificata - Google Patents

Procedimento congiunto di reticolazione espansione ed estrusione di una poliolefina ramificata

Info

Publication number
IT1071581B
IT1071581B IT67407/77A IT6740777A IT1071581B IT 1071581 B IT1071581 B IT 1071581B IT 67407/77 A IT67407/77 A IT 67407/77A IT 6740777 A IT6740777 A IT 6740777A IT 1071581 B IT1071581 B IT 1071581B
Authority
IT
Italy
Prior art keywords
reticulation
extrusion
expansion
joint procedure
polyolefine
Prior art date
Application number
IT67407/77A
Other languages
English (en)
Italian (it)
Original Assignee
Dupont S T
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 Dupont S T filed Critical Dupont S T
Application granted granted Critical
Publication of IT1071581B publication Critical patent/IT1071581B/it

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
    • C08J9/00—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof
    • C08J9/04—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof using blowing gases generated by a previously added blowing agent
    • C08J9/12—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof using blowing gases generated by a previously added blowing agent by a physical blowing agent
    • C08J9/14—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof using blowing gases generated by a previously added blowing agent by a physical blowing agent organic
    • C08J9/143—Halogen containing compounds
    • 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
    • B29C44/00—Shaping by internal pressure generated in the material, e.g. swelling or foaming ; Producing porous or cellular expanded plastics articles
    • B29C44/34—Auxiliary operations
    • B29C44/36—Feeding the material to be shaped
    • B29C44/46—Feeding the material to be shaped into an open space or onto moving surfaces, i.e. to make articles of indefinite length
    • B29C44/50—Feeding the material to be shaped into an open space or onto moving surfaces, i.e. to make articles of indefinite length using pressure difference, e.g. by extrusion or by spraying
    • 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
    • B29K2023/00—Use of polyalkenes or derivatives thereof as moulding material
    • 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
    • B29K2105/00—Condition, form or state of moulded material or of the material to be shaped
    • B29K2105/24—Condition, form or state of moulded material or of the material to be shaped crosslinked or vulcanised
    • 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)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Health & Medical Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Organic Chemistry (AREA)
  • Manufacture Of Porous Articles, And Recovery And Treatment Of Waste Products (AREA)
  • Extrusion Moulding Of Plastics Or The Like (AREA)
IT67407/77A 1976-02-26 1977-02-24 Procedimento congiunto di reticolazione espansione ed estrusione di una poliolefina ramificata IT1071581B (it)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7605441A FR2342148A1 (fr) 1976-02-26 1976-02-26 Procede conjoint de reticulation, d'expansion et d'extrusion d'une polyolefine ramifiee

Publications (1)

Publication Number Publication Date
IT1071581B true IT1071581B (it) 1985-04-10

Family

ID=9169651

Family Applications (1)

Application Number Title Priority Date Filing Date
IT67407/77A IT1071581B (it) 1976-02-26 1977-02-24 Procedimento congiunto di reticolazione espansione ed estrusione di una poliolefina ramificata

Country Status (6)

Country Link
BE (1) BE851850A (fr)
DE (1) DE2707874A1 (fr)
FR (1) FR2342148A1 (fr)
GB (1) GB1566056A (fr)
IT (1) IT1071581B (fr)
NL (1) NL7702105A (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NO313835B1 (no) * 1998-06-19 2002-12-09 Borealis As Fremgangsmate for forgrening av polypropylenmaterialer, fremgangsmate for forgrening og skumming av polypropylenmaterialer, og anvendelse av polymermaterialene oppnadd ved fremgangsmatene

Also Published As

Publication number Publication date
DE2707874A1 (de) 1977-09-01
NL7702105A (nl) 1977-08-30
FR2342148B1 (fr) 1979-07-20
GB1566056A (en) 1980-04-30
FR2342148A1 (fr) 1977-09-23
BE851850A (fr) 1977-08-25

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