GB701250A - Method of stabilizing vinyl or vinylidene chloride-containing polymers - Google Patents

Method of stabilizing vinyl or vinylidene chloride-containing polymers

Info

Publication number
GB701250A
GB701250A GB604852A GB604852A GB701250A GB 701250 A GB701250 A GB 701250A GB 604852 A GB604852 A GB 604852A GB 604852 A GB604852 A GB 604852A GB 701250 A GB701250 A GB 701250A
Authority
GB
United Kingdom
Prior art keywords
polymer
vinyl
stabilizer
solution
vinylidene chloride
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
GB604852A
Inventor
Erwin Marion Jankowiak
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.)
Dow Chemical Co
Original Assignee
Dow Chemical 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 Dow Chemical Co filed Critical Dow Chemical Co
Priority to GB604852A priority Critical patent/GB701250A/en
Publication of GB701250A publication Critical patent/GB701250A/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
    • C08J3/20—Compounding polymers with additives, e.g. colouring
    • C08J3/205—Compounding polymers with additives, e.g. colouring in the presence of a continuous liquid phase
    • 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
    • C08J2327/00—Characterised by the use of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Derivatives of such polymers
    • C08J2327/02—Characterised by the use of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Derivatives of such polymers not modified by chemical after-treatment
    • C08J2327/04—Characterised by the use of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Derivatives of such polymers not modified by chemical after-treatment containing chlorine atoms

Abstract

Polymers containing at least 10 per cent. of vinyl or vinylidene chloride are stabilized by wetting a virgin form (see below) of the polymer with an acidified aqueous solution of a stabilizer consisting of an alkali metal pyrophosphate, orthophosphate or phosphite, the solution having a pH value in the range of 3.5 to 5, separating the polymer from enough of the solution to leave in the polymer between 0.05 and 2 per cent. by weight of the stabilizer, and drying the polymer while it still contains the said amount of stabilizer. A virgin polymer is in its unmodified state as obtained from the polymerization reaction; it may have been washed and dried but has not been compounded or fabricated. The stabilizer solution may be acidified with hydrochloric, sulphuric, nitric, acetic or para-toluene sulphonic acid, a preferred solution containing tetrasodium pyrophosphate and nitric acid. The polymer may be polyvinyl or polyvinylidene chloride, a vinyl chloridevinylidene chloride co-polymer or a co-polymer of vinyl or vinylidene chloride with vinyl acetate, acrylonitrile or an acrylate or methacrylate.
GB604852A 1952-03-07 1952-03-07 Method of stabilizing vinyl or vinylidene chloride-containing polymers Expired GB701250A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB604852A GB701250A (en) 1952-03-07 1952-03-07 Method of stabilizing vinyl or vinylidene chloride-containing polymers

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB604852A GB701250A (en) 1952-03-07 1952-03-07 Method of stabilizing vinyl or vinylidene chloride-containing polymers

Publications (1)

Publication Number Publication Date
GB701250A true GB701250A (en) 1953-12-23

Family

ID=9807460

Family Applications (1)

Application Number Title Priority Date Filing Date
GB604852A Expired GB701250A (en) 1952-03-07 1952-03-07 Method of stabilizing vinyl or vinylidene chloride-containing polymers

Country Status (1)

Country Link
GB (1) GB701250A (en)

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