GB594871A - Improvements relating to synthetic rubbers - Google Patents

Improvements relating to synthetic rubbers

Info

Publication number
GB594871A
GB594871A GB16922/45A GB1692245A GB594871A GB 594871 A GB594871 A GB 594871A GB 16922/45 A GB16922/45 A GB 16922/45A GB 1692245 A GB1692245 A GB 1692245A GB 594871 A GB594871 A GB 594871A
Authority
GB
United Kingdom
Prior art keywords
vulcanized
copolymers
butadiene
dienes
specified
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
GB16922/45A
Original Assignee
Percy Frederick Combe Sowter
Filing date
Publication date
Application filed by Percy Frederick Combe Sowter filed Critical Percy Frederick Combe Sowter
Publication of GB594871A publication Critical patent/GB594871A/en
Expired legal-status Critical Current

Links

Classifications

    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08CTREATMENT OR CHEMICAL MODIFICATION OF RUBBERS
    • C08C3/00Treatment of coagulated rubber
    • C08C3/02Purification
    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08JWORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G
    • C08J7/00Chemical treatment or coating of shaped articles made of macromolecular substances
    • C08J7/04Coating
    • C08J7/0427Coating with only one layer of a composition containing a polymer binder
    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08JWORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G
    • C08J2309/00Characterised by the use of homopolymers or copolymers of conjugated diene hydrocarbons
    • C08J2309/02Copolymers with acrylonitrile
    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08JWORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G
    • C08J2433/00Characterised 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 only one being terminated by only one carboxyl radical, or of salts, anhydrides, esters, amides, imides, or nitriles thereof; Derivatives of such polymers
    • C08J2433/18Homopolymers or copolymers of nitriles
    • C08J2433/20Homopolymers or copolymers of acrylonitrile

Abstract

Copolymers of dienes and unsaturated nitriles having the formula CH2=C(R).CN where R is hydrogen or an alkyl group are deodorised by washing with a monohydric saturated alcohol containing not more than 4 C atoms. As dienes butadiene, isoprene, piperylene and 2 : 3-dimethyl butadiene, and as nitriles acryl-nitrile and methacrylonitrile are specified. The vulcanized or unvulcanized product may be treated with, e.g. methanol, ethanol or isopropanol. The copolymers may be prepared in aqueous emulsion in the presence of sodium sec-octadecyl sulphate, sodium linoleate or sodium oleate as emulsifier, carbon tetrachloride, bis-isopropyl xanthogen or dodecyl mercaptan as modifier, and benzoyl peroxide or potassium persulphate as catalyst. N,N1-di-beta - naphthyl - p - phenylene diamine may be added and the latex coagulated by adding brine and sulphuric acid. The copolymer may be vulcanized by heating with diphenyl guanidine or mercaptobenzothiazole, benzthiazyl-disulphide, zinc oxide, carbon black and sulphur and the vulcanized copolymer washed.ALSO:Synthetic rubbers of diene-unsaturated nitrile copolymers are washed with a saturated monohydric alcohol having not more than 4 C atoms to remove malodours. The copolymers may be vulcanized or unvulcanized. Dienes specified are butadiene, isoprene, piperylene and 2 : 3 dimethyl butadiene and as nitriles acrylonitrile and methacrylonitrile are specified.
GB16922/45A 1945-07-03 Improvements relating to synthetic rubbers Expired GB594871A (en)

Publications (1)

Publication Number Publication Date
GB594871A true GB594871A (en) 1947-11-20

Family

ID=1732681

Family Applications (1)

Application Number Title Priority Date Filing Date
GB16922/45A Expired GB594871A (en) 1945-07-03 Improvements relating to synthetic rubbers

Country Status (1)

Country Link
GB (1) GB594871A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1997048754A1 (en) * 1996-06-18 1997-12-24 Bespak Plc A method of cleaning or purifying elastomers and elastomeric articles which are intended for medical or pharmaceutical use
US5978988A (en) * 1997-12-18 1999-11-09 C.A.B., Inc. Frame for pivoting folding furniture having varying counterbalancing torque values
GB2408264A (en) * 2003-10-29 2005-05-25 Bespak Plc Cleaning or purifying polymers
FR2864095A1 (en) * 2003-12-23 2005-06-24 Valois Sas Pollutant elimination procedure for elastomer component such as pump seal comprises immersion in solvent such as ethanol

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1997048754A1 (en) * 1996-06-18 1997-12-24 Bespak Plc A method of cleaning or purifying elastomers and elastomeric articles which are intended for medical or pharmaceutical use
US6068789A (en) * 1996-06-18 2000-05-30 Bespak, Plc Method of cleaning or purifying elastomers and elastomeric articles which are intended for medical or pharmaceutical use
US5978988A (en) * 1997-12-18 1999-11-09 C.A.B., Inc. Frame for pivoting folding furniture having varying counterbalancing torque values
GB2408264A (en) * 2003-10-29 2005-05-25 Bespak Plc Cleaning or purifying polymers
FR2864095A1 (en) * 2003-12-23 2005-06-24 Valois Sas Pollutant elimination procedure for elastomer component such as pump seal comprises immersion in solvent such as ethanol
WO2005063863A1 (en) * 2003-12-23 2005-07-14 Valois Sas Method for eliminating pollutants contained in an elastic part .
US8008537B2 (en) 2003-12-23 2011-08-30 Valois Sas Method for eliminating pollutants contained in an elastic part

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