GB1335353A - Process for working up dispersions of elastic-thermoplastic or thermoplastic plastics - Google Patents

Process for working up dispersions of elastic-thermoplastic or thermoplastic plastics

Info

Publication number
GB1335353A
GB1335353A GB5479570A GB5479570A GB1335353A GB 1335353 A GB1335353 A GB 1335353A GB 5479570 A GB5479570 A GB 5479570A GB 5479570 A GB5479570 A GB 5479570A GB 1335353 A GB1335353 A GB 1335353A
Authority
GB
United Kingdom
Prior art keywords
styrene
polymer
acrylonitrile
polymers
copolymer
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
GB5479570A
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.)
Bayer AG
Original Assignee
Bayer AG
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 Bayer AG filed Critical Bayer AG
Publication of GB1335353A publication Critical patent/GB1335353A/en
Expired legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J2/00—Processes or devices for granulating materials, e.g. fertilisers in general; Rendering particulate materials free flowing in general, e.g. making them hydrophobic
    • B01J2/02—Processes or devices for granulating materials, e.g. fertilisers in general; Rendering particulate materials free flowing in general, e.g. making them hydrophobic by dividing the liquid material into drops, e.g. by spraying, and solidifying the drops
    • B01J2/06—Processes or devices for granulating materials, e.g. fertilisers in general; Rendering particulate materials free flowing in general, e.g. making them hydrophobic by dividing the liquid material into drops, e.g. by spraying, and solidifying the drops in a liquid medium
    • B01J2/08—Gelation of a colloidal solution
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
    • B29B9/00—Making granules
    • B29B9/08—Making granules by agglomerating smaller particles
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J3/00—Processes of treating or compounding macromolecular substances
    • C08J3/12—Powdering or granulating
    • C08J3/16—Powdering or granulating by coagulating dispersions

Landscapes

  • Chemical & Material Sciences (AREA)
  • Dispersion Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Organic Chemistry (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Health & Medical Sciences (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Processes Of Treating Macromolecular Substances (AREA)
  • Addition Polymer Or Copolymer, Post-Treatments, Or Chemical Modifications (AREA)
  • Compositions Of Macromolecular Compounds (AREA)

Abstract

1335353 Isolating polymers from aqueous dispersions BAYER AG 18 Nov 1970 [21 Nov 1969] 54795/70 Headings C3G and C3P A process for working up aqueous dispersions of polymers (as specified below) into powders of limited water and precipitant content and substantially uniform grain size comprises the following steps: (i) the aqueous polymer dispersion and a precipitant are intensively mixed under conditions of high turbulence, (ii) precipitation is carried out whilst maintaining conditions of high turbulence at a temperature below the sintering temperature of the polymer, (iii) the resulting polymer particles are agglomerated and hardened in the precipitation liquor under conditions of turbulence which diminish in at least one stage, and (iv) the precipitation liquor and agglomerated polymer particles are separated from one another. An apparatus for carrying out the process is described. The polymers which can be used comprise polystyrene; copolymers of styrene with other monomers (e.g. acrylonitrile, methyl methacrylate, α- methylstyrene and halo-styrenes); polymethyl methacrylate; homopolymers and copolymers of vinyl chloride and/or vinyl acetate; so-called "two-phase plastics", i.e. elastic-thermoplastic polymers comprising an elastomeric component and a hard brittle component, e.g. a mixture of a copolymer of butadiene and acrylonitrile and/ or styrene with a copolymer of acrylonitrile and styrene or α-methylstyrene, or a graft polymer obtained by polymerizing styrene or methyl methacrylate on to a butadiene-styrene or butadiene-methyl methacrylate copolymer; and ABS graft polymers and other graft polymer products comprising (a) a polymer obtained by graft polymerizing a mixture of (i) styrene, an alkyl styrene and/or methyl methacrylate and (ii) acrylonitrile, an alkyl-substituted acrylonitrile and/or an alkyl methacrylate onto a conjugated diolefin polymer, and optionally (b) a thermoplastic polymer or copolymer of monomers as specified in (a) (i) and (a) (ii). Suitable precipitants include electrolytes such as calcium chloride, magnesium sulphate and aluminium sulphate, and carboxylic acids such as acetic acid and oxalic acid.
GB5479570A 1969-11-21 1970-11-18 Process for working up dispersions of elastic-thermoplastic or thermoplastic plastics Expired GB1335353A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19691958498 DE1958498C3 (en) 1969-11-21 1969-11-21 Process for the preparation of dispersions of elastic-thermoplastic or thermoplastic plastics

Publications (1)

Publication Number Publication Date
GB1335353A true GB1335353A (en) 1973-10-24

Family

ID=5751701

Family Applications (1)

Application Number Title Priority Date Filing Date
GB5479570A Expired GB1335353A (en) 1969-11-21 1970-11-18 Process for working up dispersions of elastic-thermoplastic or thermoplastic plastics

Country Status (8)

Country Link
BE (1) BE759223A (en)
CA (1) CA981837A (en)
DE (1) DE1958498C3 (en)
DK (1) DK125253B (en)
ES (1) ES385764A1 (en)
FR (1) FR2069781A5 (en)
GB (1) GB1335353A (en)
NL (1) NL167183B (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110785440A (en) * 2017-04-24 2020-02-11 英力士苯领集团股份公司 Improved process for producing ABS graft copolymers
EP3383923B1 (en) 2015-12-02 2020-10-14 INEOS Styrolution Group GmbH Method for producing abs plastics having improved properties

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3830562C2 (en) * 1988-09-08 1996-08-29 Wacker Chemie Gmbh Process for the continuous coagulation of aqueous vinyl chloride polymer latices

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3383923B1 (en) 2015-12-02 2020-10-14 INEOS Styrolution Group GmbH Method for producing abs plastics having improved properties
EP3383923B2 (en) † 2015-12-02 2023-04-12 INEOS Styrolution Group GmbH Method for producing abs plastics having improved properties
CN110785440A (en) * 2017-04-24 2020-02-11 英力士苯领集团股份公司 Improved process for producing ABS graft copolymers
EP3615578B1 (en) 2017-04-24 2021-03-10 INEOS Styrolution Group GmbH Improved process for producing abs graft copolymers
US11499044B2 (en) 2017-04-24 2022-11-15 Ineos Styrolution Group Gmbh Process for producing ABS graft copolymers
CN110785440B (en) * 2017-04-24 2023-06-27 英力士苯领集团股份公司 Improved process for producing ABS graft copolymers

Also Published As

Publication number Publication date
NL7016970A (en) 1971-05-25
NL167183B (en) 1981-06-16
DE1958498A1 (en) 1971-06-03
DK125253B (en) 1973-01-22
DE1958498C3 (en) 1980-01-24
BE759223A (en) 1971-04-30
FR2069781A5 (en) 1971-09-03
CA981837A (en) 1976-01-13
ES385764A1 (en) 1973-04-01
DE1958498B2 (en) 1976-08-12

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Legal Events

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