GB1413278A - Molecular weight jumping of elastomeric polymers - Google Patents

Molecular weight jumping of elastomeric polymers

Info

Publication number
GB1413278A
GB1413278A GB1260474A GB1260474A GB1413278A GB 1413278 A GB1413278 A GB 1413278A GB 1260474 A GB1260474 A GB 1260474A GB 1260474 A GB1260474 A GB 1260474A GB 1413278 A GB1413278 A GB 1413278A
Authority
GB
United Kingdom
Prior art keywords
molecular weight
polymer
march
halogen
elastomeric polymers
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
GB1260474A
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.)
Uniroyal Inc
Original Assignee
Uniroyal 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
Application filed by Uniroyal Inc filed Critical Uniroyal Inc
Publication of GB1413278A publication Critical patent/GB1413278A/en
Expired legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08C—TREATMENT OR CHEMICAL MODIFICATION OF RUBBERS
    • C08C19/00—Chemical modification of rubber

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)

Abstract

1413278 Increasing M.W. of elastomers UNIROYAL Inc 21 March 1974 [22 March 1973] 12604/74 Headings C3P and C3E The molecular weight of elastomeric diene polymers is increased by treating the polymer in fluid form (i.e. either dissolved or as a liquid polymer) and under substantially anhydrous conditions with a catalyst system comprising (1) a halogenated or halogen-free dimethylol phenol, e.g. a brominated phenol-formaldehyde resin or the halogen-free equivalent, and (2) an inorganic Lewis acid, e.g. BF 3 etherate or FeCl 3 , in amount and under conditions such that no gelation of the polymer is caused. Numerous rubbers may be treated, those in the examples being cis-1,4-polybutadiene, natural rubber, SBR and EPDM.
GB1260474A 1973-03-22 1974-03-21 Molecular weight jumping of elastomeric polymers Expired GB1413278A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US34399673A 1973-03-22 1973-03-22

Publications (1)

Publication Number Publication Date
GB1413278A true GB1413278A (en) 1975-11-12

Family

ID=23348584

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1260474A Expired GB1413278A (en) 1973-03-22 1974-03-21 Molecular weight jumping of elastomeric polymers

Country Status (8)

Country Link
JP (1) JPS49128986A (en)
BE (1) BE812556A (en)
CA (1) CA1016695A (en)
DE (1) DE2413985A1 (en)
FR (1) FR2222384B3 (en)
GB (1) GB1413278A (en)
IT (1) IT1009376B (en)
NL (1) NL7403870A (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5061493A (en) * 1973-10-03 1975-05-27
US3901861A (en) * 1973-11-07 1975-08-26 Uniroyal Inc Molecular weight jumping of elastomeric polymers

Also Published As

Publication number Publication date
BE812556A (en) 1974-09-20
JPS49128986A (en) 1974-12-10
DE2413985A1 (en) 1974-09-26
IT1009376B (en) 1976-12-10
FR2222384B3 (en) 1976-12-31
CA1016695A (en) 1977-08-30
NL7403870A (en) 1974-09-24
FR2222384A1 (en) 1974-10-18

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Legal Events

Date Code Title Description
PS Patent sealed
PCNP Patent ceased through non-payment of renewal fee