GB1019916A - A process for improving processability of high molecular weight polypropylene - Google Patents

A process for improving processability of high molecular weight polypropylene

Info

Publication number
GB1019916A
GB1019916A GB4728262A GB4728262A GB1019916A GB 1019916 A GB1019916 A GB 1019916A GB 4728262 A GB4728262 A GB 4728262A GB 4728262 A GB4728262 A GB 4728262A GB 1019916 A GB1019916 A GB 1019916A
Authority
GB
United Kingdom
Prior art keywords
alkyl
r2sn
molecular weight
hydroxyalkyl
high molecular
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
GB4728262A
Inventor
Yuji Kobayasahi
Noboru Fukuma
Atsushi Kitaoka
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.)
Asahi Kasei Corp
Asahi Chemical Industry Co Ltd
Original Assignee
Asahi Chemical Industry Co Ltd
Asahi Kasei Kogyo KK
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 Asahi Chemical Industry Co Ltd, Asahi Kasei Kogyo KK filed Critical Asahi Chemical Industry Co Ltd
Publication of GB1019916A publication Critical patent/GB1019916A/en
Expired legal-status Critical Current

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

Landscapes

  • Chemical & Material Sciences (AREA)
  • General Chemical & Material Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Organic Chemistry (AREA)
  • Addition Polymer Or Copolymer, Post-Treatments, Or Chemical Modifications (AREA)
  • Polyesters Or Polycarbonates (AREA)
  • Artificial Filaments (AREA)

Abstract

The average molecular weight and the melt viscosity of crystalline polypropylene are reduced by heating at 210 DEG to 350 DEG C. in the presence of an organo-tin compound selected from (1) R2Sn(OOCR1)2, wherein R1 is alkyl or a phenolic group, <FORM:1019916/C3/1> (2) or [-Sn(R)2OOC.CH=CH.COO-]m, (3) R2Sn[OOC.CH=CH.COOR1]2, wherein R1 is alkyl or hydroxyalkyl, (4) R2Sn(OR1)2 or R1O[Sn(R)2O-]mR1, wherein R1 is alkyl or phenyl, <FORM:1019916/C3/2> (5) or R1O[-Sn(R)2O-]mOCR11, wherein R1 is alkyl, and R11 is alkyl, <FORM:1019916/C3/3> (6) or R1O[-Sn(R)2O-]mOC.CH=CH.COOR11, wherein R1 and R11 are alkyl, <FORM:1019916/C3/4> (7) wherein R is alkyl, hydroxyalkyl or -R11OR111, wherein R11 is alkylene and R111 is alkyl or hydroxyalkyl, (8) R2Sn=S or [-Sn(R)2S-]m, or (9) R2Sn[SR1]2, wherein R1 is alkyl; R in each of the above being alkyl, benzyl or phenyl and m being the degree of polymerization. The products find application as film and fibre.
GB4728262A 1962-12-21 1962-12-14 A process for improving processability of high molecular weight polypropylene Expired GB1019916A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEA0041953 1962-12-21

Publications (1)

Publication Number Publication Date
GB1019916A true GB1019916A (en) 1966-02-09

Family

ID=6932833

Family Applications (1)

Application Number Title Priority Date Filing Date
GB4728262A Expired GB1019916A (en) 1962-12-21 1962-12-14 A process for improving processability of high molecular weight polypropylene

Country Status (2)

Country Link
DE (1) DE1495024A1 (en)
GB (1) GB1019916A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0879830A1 (en) * 1997-05-20 1998-11-25 PCD Polymere AG Modified polypropylene having improved processability

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0879830A1 (en) * 1997-05-20 1998-11-25 PCD Polymere AG Modified polypropylene having improved processability

Also Published As

Publication number Publication date
DE1495024A1 (en) 1969-01-16

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