GB1289171A - - Google Patents

Info

Publication number
GB1289171A
GB1289171A GB1289171DA GB1289171A GB 1289171 A GB1289171 A GB 1289171A GB 1289171D A GB1289171D A GB 1289171DA GB 1289171 A GB1289171 A GB 1289171A
Authority
GB
United Kingdom
Prior art keywords
elastomeric
copolymer
block
liquid
solvent
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
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 filed Critical
Publication of GB1289171A publication Critical patent/GB1289171A/en
Expired legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
    • C08G18/00—Polymeric products of isocyanates or isothiocyanates
    • C08G18/04—Polymeric products of isocyanates or isothiocyanates with vinyl compounds
    • 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
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
    • C08G2/00—Addition polymers of aldehydes or cyclic oligomers thereof or of ketones; Addition copolymers thereof with less than 50 molar percent of other substances
    • C08G2/38—Block or graft polymers prepared by polymerisation of aldehydes or ketones on to macromolecular compounds
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
    • C08G75/00—Macromolecular compounds obtained by reactions forming a linkage containing sulfur with or without nitrogen, oxygen, or carbon in the main chain of the macromolecule
    • C08G75/02—Polythioethers
    • C08G75/06—Polythioethers from cyclic thioethers
    • C08G75/08—Polythioethers from cyclic thioethers from thiiranes

Abstract

1289171 Powdered block and graft polymers DUNLOP HOLDINGS Ltd 19 May 1970 [23 May 1969] 26352/69 Headings C3G and C3P A powder is produced from an elastomeric block copolymer or an elastomeric graft copolymer, said copolymer having one or more amorphous non-elastomeric polymer blocks and one or more elastomeric polymer blocks, by contacting the block or graft copolymer with a dispersing liquid which is a non-solvent for at least one of the elastomeric polymer blocks and which is a very poor solvent for at least one of the amorphous non-elastomeric polymer blocks, at a temperature below the glass-transition temperature of the amorphous non-elastomeric polymeric block or blocks. The dispersing liquid may be acetone, acetaldehyde or an acetoacetic ester. The dispersions of copolymer may be stabilized by addition of a liquid non-solvent for the copolymer e.g. methanol and/or water; by addition of a non-elastomeric homopolymer having the same monomer units as the amorphous non-elastomeric polymer block e.g. polystyrene, and then admixture with a liquid non- solvent for the polymer; or by the addition of a surface active agent e.g. stearic acid, and a liquid non-solvent for the polymer. The examples relate to the following block copolymers:-styrene/isoprene/ethylene episulphide, styrene/butadiene, styrene/isoprene and acrylonitrile/isoprene; and to a graft copolymer of styrene and isoprene. The liquid dispersing agent exemplified is acetone.
GB1289171D 1969-05-23 1969-05-23 Expired GB1289171A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB2635269 1969-05-23
GB4479969 1969-09-11

Publications (1)

Publication Number Publication Date
GB1289171A true GB1289171A (en) 1972-09-13

Family

ID=26258217

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1289171D Expired GB1289171A (en) 1969-05-23 1969-05-23

Country Status (6)

Country Link
AU (1) AU1520270A (en)
BE (1) BE750838A (en)
DE (2) DE2025051A1 (en)
FR (1) FR2048762A5 (en)
GB (1) GB1289171A (en)
NL (1) NL7007421A (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4535127A (en) * 1983-03-23 1985-08-13 Asahi Kasei Kogyo Kabushiki Kaisha Polyacetal copolymers and process for production thereof

Also Published As

Publication number Publication date
BE750838A (en) 1970-11-03
DE2025127A1 (en) 1970-11-26
AU1520270A (en) 1971-11-25
FR2048762A5 (en) 1971-03-19
DE2025051A1 (en) 1970-11-26
NL7007421A (en) 1970-11-25

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Legal Events

Date Code Title Description
PS Patent sealed
PLNP Patent lapsed through nonpayment of renewal fees