GB1491741A - Process for producing a transparent block copolymer - Google Patents

Process for producing a transparent block copolymer

Info

Publication number
GB1491741A
GB1491741A GB119075A GB119075A GB1491741A GB 1491741 A GB1491741 A GB 1491741A GB 119075 A GB119075 A GB 119075A GB 119075 A GB119075 A GB 119075A GB 1491741 A GB1491741 A GB 1491741A
Authority
GB
United Kingdom
Prior art keywords
block
monomer
copolymers
polymerization
alkenylaromatic
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
GB119075A
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.)
Sumitomo Chemical Co Ltd
Original Assignee
Sumitomo Chemical Co Ltd
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
Priority claimed from JP49006370A external-priority patent/JPS5811446B2/en
Priority claimed from JP6514874A external-priority patent/JPS50156593A/ja
Application filed by Sumitomo Chemical Co Ltd filed Critical Sumitomo Chemical Co Ltd
Publication of GB1491741A publication Critical patent/GB1491741A/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
    • C08F297/00—Macromolecular compounds obtained by successively polymerising different monomer systems using a catalyst of the ionic or coordination type without deactivating the intermediate polymer
    • C08F297/02—Macromolecular compounds obtained by successively polymerising different monomer systems using a catalyst of the ionic or coordination type without deactivating the intermediate polymer using a catalyst of the anionic type
    • C08F297/04—Macromolecular compounds obtained by successively polymerising different monomer systems using a catalyst of the ionic or coordination type without deactivating the intermediate polymer using a catalyst of the anionic type polymerising vinyl aromatic monomers and conjugated dienes

Abstract

1491741 Production of transparent block copolymers SUMITOMO CHEMICAL CO Ltd 10 Jan 1975 [10 Jan 1974 8 June 1974] 1190/75 Heading C3P Transparent block copolymers are obtained by the sequential polymerization in a hydrocarbon solvent and in the presence of an organolithium initiator of 65 to 90% of an alkenylaromatic monomer and 35 to 10% of a conjugated diene monomer to form (a) at least one non-elastomeric polymer block of the alkenylaromatic monomer(s) only, said block(s) comprising 50 to 90% of the total alkenylaromatic monomer employed and (b) at least one elastomeric block formed by feeding the two monomers continuously to the polymerization system in a weight ratio of from 0À1 : 1 to 3À0 : 1. The monomers used to form the copolymer block may be fed as a mixture or separately and may, in the latter case be fed consecutively. The method of feeding avoids accumulation of unreacted monomer and thus results in a substantially random copolymer block. The polymerization may be effected with a Lewis base, such as an ether or amine, present in at least the copolymerization stage(s). In examples styrene(S) - b - styrene - co - butadiene (B), S - b - S - co - B - b - S, S - b - S - co - B - b - Sco - B - b - S, and S - b - S - co - B - b - Sco - B - b - S - co - B - b - S copolymers are obtained.
GB119075A 1974-01-10 1975-01-10 Process for producing a transparent block copolymer Expired GB1491741A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP49006370A JPS5811446B2 (en) 1974-01-10 1974-01-10 The best way to get started
JP6514874A JPS50156593A (en) 1974-06-08 1974-06-08

Publications (1)

Publication Number Publication Date
GB1491741A true GB1491741A (en) 1977-11-16

Family

ID=26340487

Family Applications (1)

Application Number Title Priority Date Filing Date
GB119075A Expired GB1491741A (en) 1974-01-10 1975-01-10 Process for producing a transparent block copolymer

Country Status (6)

Country Link
CA (1) CA1049686A (en)
DE (1) DE2500690C3 (en)
FR (1) FR2257618B1 (en)
GB (1) GB1491741A (en)
IT (1) IT1026295B (en)
NL (1) NL159122B (en)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SG84495A1 (en) * 1995-08-29 2001-11-20 Phillips Petroleum Co Conjugated diene / monovinylarene block copolymers
WO2004055108A2 (en) * 2002-12-12 2004-07-01 Chevron Phillips Chemical Company Lp Method for manufacturing articles with materials containing tapered polymers
US9441090B1 (en) 2015-03-12 2016-09-13 Chevron Phillips Chemical Company Lp Methods for controlling hardness of styrene-butadiene block copolymers
US9540475B2 (en) 2015-03-12 2017-01-10 Chevron Phillips Chemical Company Lp Styrene-butadiene block copolymers for tubing applications
US9598524B1 (en) 2015-09-18 2017-03-21 Chevron Phillips Chemical Company Lp Styrene-butadiene block copolymers with a terminal butadiene block for tubing applications
US9738781B2 (en) 2015-09-03 2017-08-22 Ineos Styrolution Group Gmbh Blends of styrene-butadiene block copolymer with styrenic thermoplastic elastomers for tubing applications
US10023676B2 (en) 2016-02-24 2018-07-17 Ineos Styrolution Group Gmbh Styrene-butadiene block copolymers with an internal butadiene block for tubing applications

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3175160D1 (en) * 1980-09-06 1986-09-25 Asahi Chemical Ind Process for continuously polymerizing a block copolymer and the block copolymer mixture obtained therefrom
US5204407A (en) * 1990-06-11 1993-04-20 Bridgestone Corporation Pneumatic tires
US6835778B2 (en) 1995-08-29 2004-12-28 Chevron Phillips Chemical Company Lp Conjugated diene/monovinylarene block copolymers blends

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SG84495A1 (en) * 1995-08-29 2001-11-20 Phillips Petroleum Co Conjugated diene / monovinylarene block copolymers
WO2004055108A2 (en) * 2002-12-12 2004-07-01 Chevron Phillips Chemical Company Lp Method for manufacturing articles with materials containing tapered polymers
WO2004055108A3 (en) * 2002-12-12 2005-04-14 Chevron Phillips Chemical Co Method for manufacturing articles with materials containing tapered polymers
US9441090B1 (en) 2015-03-12 2016-09-13 Chevron Phillips Chemical Company Lp Methods for controlling hardness of styrene-butadiene block copolymers
US9540475B2 (en) 2015-03-12 2017-01-10 Chevron Phillips Chemical Company Lp Styrene-butadiene block copolymers for tubing applications
US9738781B2 (en) 2015-09-03 2017-08-22 Ineos Styrolution Group Gmbh Blends of styrene-butadiene block copolymer with styrenic thermoplastic elastomers for tubing applications
US9598524B1 (en) 2015-09-18 2017-03-21 Chevron Phillips Chemical Company Lp Styrene-butadiene block copolymers with a terminal butadiene block for tubing applications
US10023676B2 (en) 2016-02-24 2018-07-17 Ineos Styrolution Group Gmbh Styrene-butadiene block copolymers with an internal butadiene block for tubing applications

Also Published As

Publication number Publication date
IT1026295B (en) 1978-09-20
DE2500690B2 (en) 1980-01-17
DE2500690A1 (en) 1975-07-17
DE2500690C3 (en) 1980-09-11
CA1049686A (en) 1979-02-27
FR2257618B1 (en) 1979-06-08
NL159122B (en) 1979-01-15
FR2257618A1 (en) 1975-08-08
NL7500206A (en) 1975-07-14

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Legal Events

Date Code Title Description
429A Application made for amendment of specification (sect. 29/1949)
429C Application to amend the specification withdrawn (sect. 29/1949)
PS Patent sealed
PCNP Patent ceased through non-payment of renewal fee