GB960023A - Process for manufacturing alpha-epichlorohydrin - Google Patents

Process for manufacturing alpha-epichlorohydrin

Info

Publication number
GB960023A
GB960023A GB1015662A GB1015662A GB960023A GB 960023 A GB960023 A GB 960023A GB 1015662 A GB1015662 A GB 1015662A GB 1015662 A GB1015662 A GB 1015662A GB 960023 A GB960023 A GB 960023A
Authority
GB
United Kingdom
Prior art keywords
latex
solids content
emulsifier
water
give
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
GB1015662A
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.)
Solvay SA
Original Assignee
Solvay SA
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 Solvay SA filed Critical Solvay SA
Publication of GB960023A publication Critical patent/GB960023A/en
Expired legal-status Critical Current

Links

Classifications

    • 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
    • C08J3/02—Making solutions, dispersions, lattices or gels by other methods than by solution, emulsion or suspension polymerisation techniques
    • C08J3/03—Making solutions, dispersions, lattices or gels by other methods than by solution, emulsion or suspension polymerisation techniques in aqueous media
    • C08J3/07—Making solutions, dispersions, lattices or gels by other methods than by solution, emulsion or suspension polymerisation techniques in aqueous media from polymer solutions
    • 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
    • C08J2323/00—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers
    • C08J2323/02—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers not modified by chemical after treatment
    • C08J2323/18—Homopolymers or copolymers of hydrocarbons having four or more carbon atoms
    • C08J2323/20—Homopolymers or copolymers of hydrocarbons having four or more carbon atoms having four to nine carbon atoms

Landscapes

  • Chemical & Material Sciences (AREA)
  • Dispersion Chemistry (AREA)
  • Health & Medical Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Organic Chemistry (AREA)
  • Epoxy Compounds (AREA)
  • Processes Of Treating Macromolecular Substances (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
  • Addition Polymer Or Copolymer, Post-Treatments, Or Chemical Modifications (AREA)

Abstract

Stable butyl rubber latices of high solids content are prepared by emulsifying a solution of the rubber in an aliphatic hydrocarbon having 6 to 8 carbon atoms with water containing an emulsifier to give a crude latex of solids content between 6 and 13 weight per cent, removing the hydrocarbon to give a latex of solids content of 25 to 35 weight per cent and removing water containing excess emulsifier to give a concentrated latex of solids content between 60 and 70%. The water may be removed by centrifuging or creaming and the water and emulsifier removed may be recycled to the emulsification step. The concentrated latex may be diluted a second time with an amount of water equal to that removed and again concentrated to a solids content of 60 to 70%. The aqueous latex after removal of the hydrocarbon may be subjected to a two-step centrifugal action in the first of which the impurities are removed and in the second a cream layer of high polymer content and a serum layer of low polymer content are obtained, the serum layer being recycled to the emulsification step. The latex may be subjected to a strong centrifugal action in an open zone and then a weak one in a restricted separating zone. The preferred emulsifier is a mixture of the sodium salt of nonyl phenyl ether poly-oxyethylene sulphate and sodium dihydrogen orthophosphate.
GB1015662A 1961-03-18 1962-03-16 Process for manufacturing alpha-epichlorohydrin Expired GB960023A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DES73054A DE1158953B (en) 1961-03-18 1961-03-18 Process for the production of ª ‡ -epichlorohydrin

Publications (1)

Publication Number Publication Date
GB960023A true GB960023A (en) 1964-06-10

Family

ID=7503641

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1015662A Expired GB960023A (en) 1961-03-18 1962-03-16 Process for manufacturing alpha-epichlorohydrin

Country Status (2)

Country Link
DE (1) DE1158953B (en)
GB (1) GB960023A (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE1005719A3 (en) * 1992-03-17 1993-12-28 Solvay Method for producing epichlorohydrin.

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1035634B (en) * 1956-04-30 1958-08-07 Solvay Process for the production of ª-epichlorohydrin

Also Published As

Publication number Publication date
DE1158953B (en) 1963-12-12

Similar Documents

Publication Publication Date Title
US2444801A (en) Creaming of synthetic rubber latices
GB848057A (en) Treatment of polyvinyl chloride latices
DE1470951B2 (en) PROCESS FOR MANUFACTURING CONCENTRATED LATICES FROM SYNTHETIC ELASTOMERS
GB960023A (en) Process for manufacturing alpha-epichlorohydrin
US2482307A (en) Processing of synthetic elastomer latices
US2560744A (en) Crude purified hevea rubber
GB596233A (en) Elastomer-carbon black mix and method of making same
US3310516A (en) Alcohol addition subsequent to emulsification
US2352365A (en) Recovery of fatty substances by froth flotation
US2123862A (en) Treatment of latex
US2467053A (en) Creaming of rubber latices
US1868596A (en) Process of recovering sulphonic acids or their salts in a purified condition from impure sulphonation products
GB431575A (en) Improvements in or relating to the manufacture of goods of or containing sponge-likeor cellular rubber
SU393284A1 (en) METHOD FOR PRODUCING CHLOROPRENE LATEX
US2462591A (en) Treatment of synthetic rubber latex
US1831895A (en) Latex composition and process of making
GB989595A (en) A process for the preparation of concentrated aqueous despersions of rubbers or synthetic resins
US3118844A (en) Preparation of carbon black dispersions
GB847525A (en) Preparing polymer solutions and emulsions
US1983703A (en) Treatment of rubber latex
DE1494337C3 (en) Enlargement of the particle size of polymer particles in an aqueous dispersion
US2300261A (en) Purified rubber latex and process of preparing same
US1804157A (en) Processing of latex
GB648861A (en) Process for the separation of latex into liquid fractions by centrifugal action
GB1382314A (en) Polychloroprene