GB1234588A - - Google Patents

Info

Publication number
GB1234588A
GB1234588A GB4746468A GB1234588DA GB1234588A GB 1234588 A GB1234588 A GB 1234588A GB 4746468 A GB4746468 A GB 4746468A GB 1234588D A GB1234588D A GB 1234588DA GB 1234588 A GB1234588 A GB 1234588A
Authority
GB
United Kingdom
Prior art keywords
dialkylamide
polyacrylonitrile
reaction mixture
weight
maintained
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
GB4746468A
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 GB1234588A publication Critical patent/GB1234588A/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
    • C08F20/00—Homopolymers and copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and only one being terminated by only one carboxyl radical or a salt, anhydride, ester, amide, imide or nitrile thereof
    • C08F20/02—Monocarboxylic acids having less than ten carbon atoms, Derivatives thereof
    • C08F20/42—Nitriles
    • 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
    • C08F2/00—Processes of polymerisation
    • C08F2/36—Polymerisation in solid state
    • 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
    • C08F20/00—Homopolymers and copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and only one being terminated by only one carboxyl radical or a salt, anhydride, ester, amide, imide or nitrile thereof
    • C08F20/02—Monocarboxylic acids having less than ten carbon atoms, Derivatives thereof
    • C08F20/42—Nitriles
    • C08F20/44—Acrylonitrile
    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01F—CHEMICAL FEATURES IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS; APPARATUS SPECIALLY ADAPTED FOR THE MANUFACTURE OF CARBON FILAMENTS
    • D01F1/00—General methods for the manufacture of artificial filaments or the like
    • D01F1/02—Addition of substances to the spinning solution or to the melt
    • D01F1/10—Other agents for modifying properties
    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01F—CHEMICAL FEATURES IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS; APPARATUS SPECIALLY ADAPTED FOR THE MANUFACTURE OF CARBON FILAMENTS
    • D01F6/00—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof
    • D01F6/02—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof from homopolymers obtained by reactions only involving carbon-to-carbon unsaturated bonds
    • D01F6/18—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof from homopolymers obtained by reactions only involving carbon-to-carbon unsaturated bonds from polymers of unsaturated nitriles, e.g. polyacrylonitrile, polyvinylidene cyanide
    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01F—CHEMICAL FEATURES IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS; APPARATUS SPECIALLY ADAPTED FOR THE MANUFACTURE OF CARBON FILAMENTS
    • D01F6/00—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof
    • D01F6/28—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof from copolymers obtained by reactions only involving carbon-to-carbon unsaturated bonds
    • D01F6/38—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof from copolymers obtained by reactions only involving carbon-to-carbon unsaturated bonds comprising unsaturated nitriles as the major constituent

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Health & Medical Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Organic Chemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Textile Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Toxicology (AREA)
  • Addition Polymer Or Copolymer, Post-Treatments, Or Chemical Modifications (AREA)

Abstract

1,234,588. Polymerizing acrylonitrile. AKZO N.V. 7 Oct., 1968, No. 47464/68. Heading C3P. A continuous method of producing a spinnable solution of polyacrylonitrile, i.e. a polymer containing at least 85% by weight acrylonitrile units in a liquid dialkylamide by polymerization in suspension in a single stage, wherein there is used a reaction mixture comprising (i) a liquid dialkylamide, (ii) a monomeric material containing, by weight, at least 85% acrylonitrile, up to 10% of ethylenicallyunsaturated comonomer and up to 5% of ethylenically unsaturated comonomer for improving the tinctorial properties of the polyacrylonitrile, (iii) polyacrylonitrile and (iv) a polymerization catalyst in a mixer-reactor, is characterized in that: (a) a concentration of at least 25% by weight of polyacrylonitrile is maintained in the reaction mixture by maintaining therein a weight ratio between monomer (ii) and dialkylamide of more than 1À63 by the continuous addition of monomer (ii) and dialkylamide, either separately or in the form of a mixture, in a proportion by weight of at least 72: 28 and at most 95: 5; (b) the polymerization catalyst used comprises an oxidizing agent and an organic reducing agent; (c) the temperature of the reaction mixture is maintained between 40‹ and 70‹ C.; (d) a residence time of the reaction mixture in the mixerreactor of from 15 minutes to 2 hours is maintained; and (e) a portion of the reaction mixture is continuously withdrawn and an appropriate quantity of dialkylamide is added thereto so that, after elimination of unpolymerized monomer, a spinnable solution of polyacrylonitrile is obtained. Suitable comonomers include alkyl acrylates and methacrylates, vinyl acetate and styrene. Comonomers for improving tinctorial properties (i.e. receptivity to dyes) include vinyl-, allyl- and methallyl-sulphonic acids, sulphonic acid derivatives of styrene, vinyl phenyl ether, N-phenylmaleamic acid and N-phenyl maleimide, and alkali metal, ammonium and amine salts of such sulphonic acids. Dimethyl formamide and dimethyl acetamide are suitable as the liquid dialkylamide. Examples of the oxidizing catalyst component are benzoyl peroxide, cumene hydroperoxide, hydrogen peroxide, sodium perborate, sodium perchlorate and ammonium persulphate; and as the organic reducing agent, compounds such as alkyl mercaptans, thiourea, dixanthogenate disulphide and thioglycolic acid may be used. Fibres, filaments and films can be formed from the polymer solutions obtained by the described process.
GB4746468A 1968-10-07 1968-10-07 Expired GB1234588A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB4746468 1968-10-07

Publications (1)

Publication Number Publication Date
GB1234588A true GB1234588A (en) 1971-06-03

Family

ID=10445067

Family Applications (1)

Application Number Title Priority Date Filing Date
GB4746468A Expired GB1234588A (en) 1968-10-07 1968-10-07

Country Status (7)

Country Link
BE (1) BE739665A (en)
DE (1) DE1950195C3 (en)
ES (1) ES371868A1 (en)
FR (1) FR1604309A (en)
GB (1) GB1234588A (en)
IL (1) IL33120A (en)
NL (1) NL6914529A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0850959A1 (en) * 1996-12-26 1998-07-01 Sumitomo Chemical Company, Limited Method for producing methyl methacrylate polymer

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL181914C (en) * 1977-07-05 1900-01-01 Toyo Seikan Kaisha Ltd DEVICE FOR MANUFACTURE OF DRAWN OBJECTS.

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0850959A1 (en) * 1996-12-26 1998-07-01 Sumitomo Chemical Company, Limited Method for producing methyl methacrylate polymer
US5898055A (en) * 1996-12-26 1999-04-27 Sumitomo Chemical Co., Ltd. Method for producing methyl methacrylate polymer

Also Published As

Publication number Publication date
DE1950195A1 (en) 1970-04-16
FR1604309A (en) 1971-10-11
IL33120A0 (en) 1969-12-31
ES371868A1 (en) 1972-03-16
BE739665A (en) 1970-03-16
DE1950195C3 (en) 1978-09-21
IL33120A (en) 1973-04-30
DE1950195B2 (en) 1978-02-09
NL6914529A (en) 1970-04-09

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PLE Entries relating assignments, transmissions, licences in the register of patents
PCNP Patent ceased through non-payment of renewal fee