GB743513A - Method for introducing water into vulcanizable compositions - Google Patents

Method for introducing water into vulcanizable compositions

Info

Publication number
GB743513A
GB743513A GB27338/53A GB2733853A GB743513A GB 743513 A GB743513 A GB 743513A GB 27338/53 A GB27338/53 A GB 27338/53A GB 2733853 A GB2733853 A GB 2733853A GB 743513 A GB743513 A GB 743513A
Authority
GB
United Kingdom
Prior art keywords
lignin
oxidized
water
powder
sulphur
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
GB27338/53A
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.)
National Research Council of Canada
Original Assignee
National Research Council of Canada
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 National Research Council of Canada filed Critical National Research Council of Canada
Publication of GB743513A publication Critical patent/GB743513A/en
Expired legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L9/00—Compositions of homopolymers or copolymers of conjugated diene hydrocarbons
    • C08L9/06—Copolymers with styrene
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L21/00—Compositions of unspecified rubbers
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L7/00—Compositions of natural rubber
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L97/00—Compositions of lignin-containing materials
    • C08L97/005—Lignin

Landscapes

  • Chemical & Material Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Organic Chemistry (AREA)
  • Compounds Of Unknown Constitution (AREA)
  • Processes Of Treating Macromolecular Substances (AREA)

Abstract

A predetermined amount of water is introduced into vulcanizable elastomer compositions by dispersing the water with sufficient finely divided, oxidized or unoxidized lignin, which has been isolated by precipitation from the aqueous liquors obtained from the alkaline digestion of lignocellulosic material to produce a free-flowing, dry-appearing powder, and milling the powder into the vulcanizable elastomer composition. In an example, oxidized lignin having a moisture content of 52 per cent is mixed and vulcanized with a butadieneacrylonitrile copolymer composition containing also channel black, stearic acid, zinc oxide, accelerator and sulphur. In further examples, moist oxidized lignin is added to vulcanizable butadiene-styrene compositions also containing substances from the list, tsearic acid, zinc oxide, carbon black, benzothiazole disulphide, copper or zinc dimethyl dithiocarbamate, N-cyclohexyl-2-benzthiazole, sulphur, methyl zimate and plasticizers. Specification 664,811, [Group IV (b)], is referred to.ALSO:A predetermined amount of water is introduced into vulcanizable elastomer compositions by dispersing the water with sufficient finely divided lignin which has been isolated by precipitation from the aqueous liquors obtained from the alkaline digestion of lignocellulosic material to produce a free-flowing, dry-appearing powder and milling the powder into the vulcanizable elastomer composition. The lignin material is prepared by heating an alkaline solution of the material to 50 to 80 DEG C. if the lignin is unoxidized, and may be prepared in accordance with the methods of Specification 664,811, [Group IV(b)], and to 70 to 100 DEG C. if oxidized, and then precipitating under agitation by the addition of sulphuric or hydrochloric acid. After reheating the precipitate is filtered and washed. The product is not hygroscopic and should be kept in a stoppered container after the moisture content has been adjusted. In an example, oxidized lignin having a moisture content of 32 per cent was incorporated in a mixture of natural rubber, stearic acid, zinc oxide, zimate accelerator and sulphur.
GB27338/53A 1952-10-08 1953-10-05 Method for introducing water into vulcanizable compositions Expired GB743513A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US743513XA 1952-10-08 1952-10-08

Publications (1)

Publication Number Publication Date
GB743513A true GB743513A (en) 1956-01-18

Family

ID=22119094

Family Applications (1)

Application Number Title Priority Date Filing Date
GB27338/53A Expired GB743513A (en) 1952-10-08 1953-10-05 Method for introducing water into vulcanizable compositions

Country Status (1)

Country Link
GB (1) GB743513A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2144123A (en) * 1983-07-18 1985-02-27 Lilly Co Eli Leukotriene antagonists

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2144123A (en) * 1983-07-18 1985-02-27 Lilly Co Eli Leukotriene antagonists

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