GB652839A - Blended rubber latex frothed sponge - Google Patents

Blended rubber latex frothed sponge

Info

Publication number
GB652839A
GB652839A GB29998/48A GB2999848A GB652839A GB 652839 A GB652839 A GB 652839A GB 29998/48 A GB29998/48 A GB 29998/48A GB 2999848 A GB2999848 A GB 2999848A GB 652839 A GB652839 A GB 652839A
Authority
GB
United Kingdom
Prior art keywords
butadiene
latex
styrene
added
weight
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
GB29998/48A
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.)
Wingfoot Corp
Original Assignee
Wingfoot Corp
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 Wingfoot Corp filed Critical Wingfoot Corp
Publication of GB652839A publication Critical patent/GB652839A/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
    • C08L21/00—Compositions of unspecified rubbers
    • 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
    • C08J9/00—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof
    • C08J9/0061—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof characterized by the use of several polymeric components
    • 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
    • C08J9/00—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof
    • C08J9/30—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof by mixing gases into liquid compositions or plastisols, e.g. frothing with air
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06N—WALL, FLOOR, OR LIKE COVERING MATERIALS, e.g. LINOLEUM, OILCLOTH, ARTIFICIAL LEATHER, ROOFING FELT, CONSISTING OF A FIBROUS WEB COATED WITH A LAYER OF MACROMOLECULAR MATERIAL; FLEXIBLE SHEET MATERIAL NOT OTHERWISE PROVIDED FOR
    • D06N3/00—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof
    • D06N3/04—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof with macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds
    • 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
    • C08J2307/00—Characterised by the use of natural rubber
    • C08J2307/02—Latex
    • 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
    • C08J2409/00—Characterised by the use of homopolymers or copolymers of conjugated diene hydrocarbons
    • 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
    • C08J2425/00—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 an aromatic carbocyclic ring; Derivatives of such polymers

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Health & Medical Sciences (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Organic Chemistry (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Textile Engineering (AREA)
  • Graft Or Block Polymers (AREA)
  • Laminated Bodies (AREA)

Abstract

A frothed latex sponge comprises at least 70 per cent by weight of a rubber latex and not more than 30 per cent by weight of a resin latex obtained by polymerizing a mixture of 80 to 95 per cent by weight of a vinyl aromatic monomer and 20 to 5 per cent by weight of a diene hydrocarbon monomer. The term rubber latex includes natural latex, polychlorprene latex, butadiene-styrene, and butadiene-acrylonitrile copolymers and their mixtures. The preferred resin latex is obtained from styrene and butadiene. Specified dienes include butadiene, isoprene, 2,3-di-methyl butadiene, 1,3-dimethyl butadiene, pentadiene-1,3; pentadiene-2,4; 3-methyl-pentadiene-2,4; 3,4-di-methyl pentadiene-2,4; straight and branched chain hexadienes and heptadienes. Specified vinyl aromatics include styrene, m- and p-chlorostyrene, dichlorostyrenes and alkyl styrenes, e.g. methyl and isopropyl styrene, and vinyl naphthalene. Emulsion polymerization is effected wherein a styrene phase including a modifier and styrene reacts with butadiene in the presence of a water phase containing a catalyst and emulsifier. Catalysts specified are potassium persulphate, benzoyl peroxide, hydrogen peroxide, perborates and percarbonates, 0.01 to 1.0 per cent by weight being used. Emulsifiers, 1.5 to 10 per cent by weight, specified are fatty acid soaps, e.g. sodium stearate, and resin acid soaps, e.g. sodium resinate. Copolymerization is effected between 20 DEG and 70 DEG C. for 4 to 100 hours. The usual accelerators and antioxidants are added to the rubber latex and other materials which may be added are thickening agents, e.g. casein, gum tragacanth and water glass, and modifiers, e.g. castor oil (for elasticity) carbon blacks (loading agents), magnesium oxide and calcium silicate (strengtheners), paraffin wax (improves rebound properties) and various dyes and colouring materials. The products are useful for furniture, car seats, under rug mats and shoe liners. In example 6, the rubber latex is a mixture of natural and a synthetic rubber from the copolymerization of 70 parts butadiene and 30 parts of styrene.ALSO:A frothed latex sponge comprises at least 70 per cent by weight of a rubber latex and not more than 30 per cent by weight of a resin latex obtained by polymerizing a mixture of 80 to 95 per cent by weight of a vinyl aromatic monomer and 20 to 5 per cent by weight of a diene hydrocarbon monomer. The term rubber latex includes natural latex, polychloroprene latex, butadiene-styrene and butadiene-acrylonitrile copolymers and their mixtures. The preferred resin latex is obtained from styrene and butadiene. Specified dienes include butadiene, isoprene, 2,3-dimethyl butadiene; 1,3-dimethyl butadiene; 2-ethyl butadiene; pentadiene-1,3; pentadiene-2,4; 3-methyl pentadiene2,4; 3,4-dimethyl pentadiene-2,4; straight and branched chain hexadienes and heptadienes. Specified vinyl aromatic monomers include styrene, m- and p-chlorostyrene; dichlorostyrenes and alkyl styrenes, e.g. methyl- and isopropyl styrene, and vinyl naphthalene. Stabilizers which can be added are ammonia, alkali metal hydroxide, potassium oleate soap, rosin soaps, sodium stearate, potassium lauryl sulphate, sulphonated hydrocarbons or sodium alkyl naphthalene sulphate. Thickening agents may be added, e.g. casein, gum tragacanth and water glass; antioxidants, e.g. phenyl-b -naphthylamine, di-b -naphthyl-p-phenylene diamine and the heptyl-diphenylamines; and accelerators, e.g. zinc mercaptobenzothiazolate, zinc diethyldithio carbamate, benzothiazyl disulphide and tetramethyl thiuram disulphide are then added; and a modifier such as castor oil, carbon black, magnesium oxide, calcium silicate, paraffin wax, dyes and colouring materials may also be added. In an example, natural rubber is slowly agitated with potassium oleate solution; ethylzincate, a paraffin wax coated dispersion of zinc mercaptobenzothiazolate and sym-di-b -naphthyl-p-phenylene diamine then added and the mixture matured. An aqueous dispersion of sulphur, potassium rosinate and paraffin wax are added and agitated. To this compounded rubber latex, a resin latex is added and the whole frothed, then a dispersion of zinc oxide and diphenyl guanidine is added. Subsequently a dispersion of sodium silicofluoride is added and the whole poured into a mould and gelled. In example 6, the rubber latex comprises a mixture of natural and a synthetic rubber (butadiene-styrene). The Specification as open to inspection under Sect. 91 comprises also the addition of more than 30 per cent by weight of the resin latex. This subject-matter does not appear in the Specification as accepted.
GB29998/48A 1948-03-04 1948-11-18 Blended rubber latex frothed sponge Expired GB652839A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US287568XA 1948-03-04 1948-03-04

Publications (1)

Publication Number Publication Date
GB652839A true GB652839A (en) 1951-05-02

Family

ID=21845248

Family Applications (1)

Application Number Title Priority Date Filing Date
GB29998/48A Expired GB652839A (en) 1948-03-04 1948-11-18 Blended rubber latex frothed sponge

Country Status (4)

Country Link
CH (1) CH287568A (en)
FR (1) FR976338A (en)
GB (1) GB652839A (en)
NL (1) NL75463C (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS53140372A (en) * 1977-04-25 1978-12-07 Brunswick Corp Moldable cloth

Also Published As

Publication number Publication date
FR976338A (en) 1951-03-16
CH287568A (en) 1952-12-15
NL75463C (en)

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