GB801426A - Process for curing semi-fluid polychloroprene with polyamines - Google Patents

Process for curing semi-fluid polychloroprene with polyamines

Info

Publication number
GB801426A
GB801426A GB5387/57A GB538757A GB801426A GB 801426 A GB801426 A GB 801426A GB 5387/57 A GB5387/57 A GB 5387/57A GB 538757 A GB538757 A GB 538757A GB 801426 A GB801426 A GB 801426A
Authority
GB
United Kingdom
Prior art keywords
added
diamine
ethylene diamine
polymerization
polychloroprene
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
GB5387/57A
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.)
EIDP Inc
Original Assignee
EI Du Pont de Nemours and Co
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 EI Du Pont de Nemours and Co filed Critical EI Du Pont de Nemours and Co
Publication of GB801426A publication Critical patent/GB801426A/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
    • C08F136/00—Homopolymers of compounds having one or more unsaturated aliphatic radicals, at least one having two or more carbon-to-carbon double bonds
    • C08F136/02—Homopolymers of compounds having one or more unsaturated aliphatic radicals, at least one having two or more carbon-to-carbon double bonds the radical having only two carbon-to-carbon double bonds
    • C08F136/04—Homopolymers of compounds having one or more unsaturated aliphatic radicals, at least one having two or more carbon-to-carbon double bonds the radical having only two carbon-to-carbon double bonds conjugated
    • C08F136/14—Homopolymers of compounds having one or more unsaturated aliphatic radicals, at least one having two or more carbon-to-carbon double bonds the radical having only two carbon-to-carbon double bonds conjugated containing elements other than carbon and hydrogen
    • C08F136/16—Homopolymers of compounds having one or more unsaturated aliphatic radicals, at least one having two or more carbon-to-carbon double bonds the radical having only two carbon-to-carbon double bonds conjugated containing elements other than carbon and hydrogen containing halogen
    • C08F136/18—Homopolymers of compounds having one or more unsaturated aliphatic radicals, at least one having two or more carbon-to-carbon double bonds the radical having only two carbon-to-carbon double bonds conjugated containing elements other than carbon and hydrogen containing halogen containing chlorine
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K5/00—Use of organic ingredients
    • C08K5/16—Nitrogen-containing compounds
    • C08K5/17—Amines; Quaternary ammonium compounds

Landscapes

  • Chemical & Material Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Organic Chemistry (AREA)
  • Compositions Of Macromolecular Compounds (AREA)

Abstract

Polychloroprene, which has been prepared by polymerizing chloroprene in the presence of 1.7 to 3.0 per cent elemental sulphur and has a viscosity of one to two million centipoises as measured at 50 DEG C. with a Brookfield viscometer, is cured at 20-200 DEG C. by compounding with a polyamine of the general formula H2N(RNH)nH where R is a divalent hydrocarbon radical which may be different in the same molecule but contains no more than 8 carbon atoms and n is an integer less than 5. Emulsion polymerization using a persulphate catalyst is used and a polymerization modifier particularly iodoform or a mercapto compound is preferably added in the polymerization of the chloroprene and a tetraalkyl thiuram disulphide is added as a short stop and plasticiser. Suitable polyamine curing agents are the phenylene and toluylene diamines, the diamino diphenylamines, and the bis-(amino-phenyl) phenylene diamines, ethylene diamine, hexamethylene diamine, octamethylene diamine, aminoethyl hexamethylene diamine, triethylene tetramine, tetraethylene pentamine, aminophenyl ethylene diamine and bis-(aminophenyl) ethylene diamine. A divalent metal oxide such as the oxide of magnesium, lead or zinc or mixtures thereof are preferably also added. A vegetable or mineral oil may also be added and the usual antioxidants reinforcing agents, pigments, fillers, extenders, odorants and blowing agents. The ingredients may be incorporated by mixing which may introduce air bubbles which when the mixture is heated above 100 DEG C. to vulcanize expand and yield a sponge; alternatively, such bubbles may be removed by application of a vacuum. The compositions may be heated in moulds to prepare for example printing rolls.
GB5387/57A 1956-03-02 1957-02-18 Process for curing semi-fluid polychloroprene with polyamines Expired GB801426A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US801426XA 1956-03-02 1956-03-02

Publications (1)

Publication Number Publication Date
GB801426A true GB801426A (en) 1958-09-10

Family

ID=22155526

Family Applications (1)

Application Number Title Priority Date Filing Date
GB5387/57A Expired GB801426A (en) 1956-03-02 1957-02-18 Process for curing semi-fluid polychloroprene with polyamines

Country Status (2)

Country Link
FR (1) FR1172795A (en)
GB (1) GB801426A (en)

Also Published As

Publication number Publication date
FR1172795A (en) 1959-02-16

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