GB988846A - Processing of ethylene-propylene copolymer - Google Patents

Processing of ethylene-propylene copolymer

Info

Publication number
GB988846A
GB988846A GB490164A GB490164A GB988846A GB 988846 A GB988846 A GB 988846A GB 490164 A GB490164 A GB 490164A GB 490164 A GB490164 A GB 490164A GB 988846 A GB988846 A GB 988846A
Authority
GB
Grant status
Application
Patent type
Prior art keywords
ethylene
propylene copolymer
processing
deg
reduced
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
GB490164A
Inventor
Jackson Schell Boyer
Charles Edward Scott
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.)
Sunoco Inc
Original Assignee
Sunoco Inc
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

Links

Classifications

    • 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
    • C08F8/00Chemical modification by after-treatment
    • C08F8/50Partial depolymerisation
    • 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
    • C08F2810/00Chemical modification of a polymer
    • C08F2810/10Chemical modification of a polymer including a reactive processing step which leads, inter alia, to morphological and/or rheological modifications, e.g. visbreaking
    • 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
    • C08F2810/00Chemical modification of a polymer
    • C08F2810/20Chemical modification of a polymer leading to a crosslinking, either explicitly or inherently

Abstract

The Mooney viscosity of a compounded ethylene-propylene copolymer is reduced by a process which comprises masticating the copolymer with 0.1 to 1.0% by weight of an organic peroxide at a temperature of 250 DEG to 400 DEG F. and thereafter compounding the polymer with conventional additives such as carbon black and further peroxide. Carbon black may also be present in the first mastication stage. By this process the compounded Mooney is reduced from 100-180 to 70-100. Exemplified peroxides are dicumyl peroxide and cumene hydroperoxide.
GB490164A 1964-02-05 1964-02-05 Processing of ethylene-propylene copolymer Expired GB988846A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB490164A GB988846A (en) 1964-02-05 1964-02-05 Processing of ethylene-propylene copolymer

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB490164A GB988846A (en) 1964-02-05 1964-02-05 Processing of ethylene-propylene copolymer

Publications (1)

Publication Number Publication Date
GB988846A true true GB988846A (en) 1965-04-14

Family

ID=9786011

Family Applications (1)

Application Number Title Priority Date Filing Date
GB490164A Expired GB988846A (en) 1964-02-05 1964-02-05 Processing of ethylene-propylene copolymer

Country Status (1)

Country Link
GB (1) GB988846A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2519007A1 (en) * 1981-12-24 1983-07-01 Charbonnages Ste Chimique Modified copolymers of ethylene and at least one a-olefin and process for their preparation
EP1013673A1 (en) * 1998-12-22 2000-06-28 Enichem S.p.A. Process for reducing the molecular weight of copolymers and terpolymers of ethylene
EP1548060A1 (en) * 2003-12-22 2005-06-29 Polimeri Europa S.p.A. Elastomeric blends based on carbon black
EP1574523A1 (en) * 2004-03-09 2005-09-14 Tokai Rubber Industries, Ltd. Rubber product and method for manufacturing the same

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2519007A1 (en) * 1981-12-24 1983-07-01 Charbonnages Ste Chimique Modified copolymers of ethylene and at least one a-olefin and process for their preparation
EP0083521A1 (en) * 1981-12-24 1983-07-13 Ecp-Enichem Polymeres France S.A. Modified copolymers of ethylene and at least one alpha-olefin, and process for their prepraration
US4486579A (en) * 1981-12-24 1984-12-04 Societe Chimique Des Charbonnages Modified copolymers of ethylene and α-olefins and a process for their preparation
EP1013673A1 (en) * 1998-12-22 2000-06-28 Enichem S.p.A. Process for reducing the molecular weight of copolymers and terpolymers of ethylene
US6211332B1 (en) 1998-12-22 2001-04-03 Enichem S.P.A. Process for reducing the molecular weight of copolymers and terpolymers of ethylene
EP1548060A1 (en) * 2003-12-22 2005-06-29 Polimeri Europa S.p.A. Elastomeric blends based on carbon black
JP2005187819A (en) * 2003-12-22 2005-07-14 Polimeri Europa Spa Carbon black-based elastomer mixture
US7482408B2 (en) 2003-12-22 2009-01-27 Polimeri Europa S.P.A. Elastomeric blends based on carbon black
EP1574523A1 (en) * 2004-03-09 2005-09-14 Tokai Rubber Industries, Ltd. Rubber product and method for manufacturing the same
US7598311B2 (en) 2004-03-09 2009-10-06 Tokai Rubber Industries, Ltd. Rubber product and method for manufacturing the same

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