GB1283602A - Polymerisation process - Google Patents

Polymerisation process

Info

Publication number
GB1283602A
GB1283602A GB77769A GB77769A GB1283602A GB 1283602 A GB1283602 A GB 1283602A GB 77769 A GB77769 A GB 77769A GB 77769 A GB77769 A GB 77769A GB 1283602 A GB1283602 A GB 1283602A
Authority
GB
United Kingdom
Prior art keywords
peroxide
polymerization
initiators
vinyl aromatic
monomer
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
GB77769A
Inventor
John Mansel Squire
Michael John Symes
John Sanders
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.)
BP PLC
Original Assignee
BP 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 BP PLC filed Critical BP PLC
Priority to GB77769A priority Critical patent/GB1283602A/en
Priority to SE770A priority patent/SE362436B/xx
Priority to DE19702000168 priority patent/DE2000168A1/en
Priority to ES375189A priority patent/ES375189A1/en
Priority to NL7000066A priority patent/NL7000066A/xx
Priority to DK2870A priority patent/DK135049B/en
Priority to FR7000299A priority patent/FR2027833A1/fr
Priority to BE744085D priority patent/BE744085A/en
Priority to JP227270A priority patent/JPS4915636B1/ja
Priority to BR21583170A priority patent/BR7015831D0/en
Publication of GB1283602A publication Critical patent/GB1283602A/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
    • C08F279/00—Macromolecular compounds obtained by polymerising monomers on to polymers of monomers having two or more carbon-to-carbon double bonds as defined in group C08F36/00
    • C08F279/02—Macromolecular compounds obtained by polymerising monomers on to polymers of monomers having two or more carbon-to-carbon double bonds as defined in group C08F36/00 on to polymers of conjugated dienes

Abstract

1283602 Impact resistant vinyl aromatic polymers BRITISH PETROLEUM CO Ltd 18 Dec 1969 [6 Jan 1969] 777/69 Heading C3G A toughened vinyl aromatic polymer in which the rubber is in the form of particles of average diameter in the range 1 to 20 microns is prepared by a process which comprises dissolving a rubber in a vinyl aromatic monomer and prepolymerizing the monomer under conditions that result in phase inversion in the presence of a mixture of two initiators, one of which promotes more than 7% by weight graft polymerization on the polymerization initiated and one of which promotes less than 7% by weight graft polymerization on the polymerization initiated under the conditions of the polymerization stage, and completing the polymerization in a second stage, the ratio of the initiators being selected to give rubber particles of the desired size. The monomer may comprise a minor amount of acrylonitrile. Specified high grafting initiators are benzoyl peroxide, tertiary butyl perbenzoate, perpivalate, peroctoate or perisononanoate, and dicumyl peroxide. The low grafting initiator is, e.g. lauroyl peroxide or azo-diisobutyronitrile. In the examples, a solution of polybutadiene and polystyrene in styrene is prepolymerized in the presence of benzoyl peroxide and lauroyl peroxide and with incremental addition of water and, in one example, addition of a further amount of the latter peroxide, the prepolymer obtained being suspended in water and polymerized using a mixture of tertiary butyl perbenzoate and dicumyl peroxide, or benzoyl peroxide, as catalyst.
GB77769A 1969-01-06 1969-01-06 Polymerisation process Expired GB1283602A (en)

Priority Applications (10)

Application Number Priority Date Filing Date Title
GB77769A GB1283602A (en) 1969-01-06 1969-01-06 Polymerisation process
SE770A SE362436B (en) 1969-01-06 1970-01-02
DE19702000168 DE2000168A1 (en) 1969-01-06 1970-01-03 Process for the production of rubber-containing polyvinyl aromatics
ES375189A ES375189A1 (en) 1969-01-06 1970-01-05 Polymerisation process
NL7000066A NL7000066A (en) 1969-01-06 1970-01-05
DK2870A DK135049B (en) 1969-01-06 1970-01-05 Process for the production of a polystyrene rubber-toughened polystyrene.
FR7000299A FR2027833A1 (en) 1969-01-06 1970-01-06
BE744085D BE744085A (en) 1969-01-06 1970-01-06 POLYMERIZATION PROCESS
JP227270A JPS4915636B1 (en) 1969-01-06 1970-01-06
BR21583170A BR7015831D0 (en) 1969-01-06 1970-01-06 POLYMERIZATION PROCESS

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB77769A GB1283602A (en) 1969-01-06 1969-01-06 Polymerisation process

Publications (1)

Publication Number Publication Date
GB1283602A true GB1283602A (en) 1972-08-02

Family

ID=9710342

Family Applications (1)

Application Number Title Priority Date Filing Date
GB77769A Expired GB1283602A (en) 1969-01-06 1969-01-06 Polymerisation process

Country Status (10)

Country Link
JP (1) JPS4915636B1 (en)
BE (1) BE744085A (en)
BR (1) BR7015831D0 (en)
DE (1) DE2000168A1 (en)
DK (1) DK135049B (en)
ES (1) ES375189A1 (en)
FR (1) FR2027833A1 (en)
GB (1) GB1283602A (en)
NL (1) NL7000066A (en)
SE (1) SE362436B (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5453251U (en) * 1977-09-22 1979-04-12

Also Published As

Publication number Publication date
SE362436B (en) 1973-12-10
DK135049C (en) 1977-08-01
FR2027833A1 (en) 1970-10-02
BE744085A (en) 1970-07-06
DE2000168A1 (en) 1971-02-11
NL7000066A (en) 1970-07-08
ES375189A1 (en) 1972-03-01
DK135049B (en) 1977-02-28
JPS4915636B1 (en) 1974-04-16
BR7015831D0 (en) 1973-04-26

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Legal Events

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