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GB1119573A - Improvements relating to the production of vapour permeable flexible sheet materials - Google Patents

Improvements relating to the production of vapour permeable flexible sheet materials

Info

Publication number
GB1119573A
GB1119573A GB3304864A GB3304864A GB1119573A GB 1119573 A GB1119573 A GB 1119573A GB 3304864 A GB3304864 A GB 3304864A GB 3304864 A GB3304864 A GB 3304864A GB 1119573 A GB1119573 A GB 1119573A
Authority
GB
United Kingdom
Prior art keywords
polymer
felt
solvent
chloride
polyurethane
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
GB3304864A
Inventor
Frank Sharp
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.)
Porous Plastics Ltd
Original Assignee
Porous Plastics Ltd
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 Porous Plastics Ltd filed Critical Porous Plastics Ltd
Priority to GB3304864A priority Critical patent/GB1119573A/en
Priority to DE19651469564 priority patent/DE1469564A1/en
Priority to FR28117A priority patent/FR1456694A/en
Priority to NL6510655A priority patent/NL6510655A/xx
Publication of GB1119573A publication Critical patent/GB1119573A/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
    • C08J9/00—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof
    • C08J9/28—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof by elimination of a liquid phase from a macromolecular composition or article, e.g. drying of coagulum
    • 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
    • C08J9/26—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof by elimination of a solid phase from a macromolecular composition or article, e.g. leaching out
    • 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
    • D06N3/0043—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof characterised by their foraminous structure; Characteristics of the foamed layer or of cellular layers
    • D06N3/0052—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof characterised by their foraminous structure; Characteristics of the foamed layer or of cellular layers obtained by leaching out of a compound, e.g. water soluble salts, fibres or fillers; obtained by freezing or sublimation; obtained by eliminating drops of sublimable fluid
    • 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
    • C08J2201/00—Foams characterised by the foaming process
    • C08J2201/04—Foams characterised by the foaming process characterised by the elimination of a liquid or solid component, e.g. precipitation, leaching out, evaporation
    • C08J2201/054—Precipitating the polymer by adding a non-solvent or a different solvent
    • C08J2201/0542—Precipitating the polymer by adding a non-solvent or a different solvent from an organic solvent-based polymer composition
    • C08J2201/0544—Precipitating the polymer by adding a non-solvent or a different solvent from an organic solvent-based polymer composition the non-solvent being aqueous

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Health & Medical Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Organic Chemistry (AREA)
  • Textile Engineering (AREA)
  • Treatments For Attaching Organic Compounds To Fibrous Goods (AREA)
  • Compositions Of Macromolecular Compounds (AREA)

Abstract

In the examples a vapour-permeable leather substitute is made by impregnating a web with a mixture of (a) polyvinyl chloride, dioctyl sebacate, thermal stabilizer, sodium chloride, solvent naphtha, wetting agents and pigments; or (b) a polyurethane, 4,41methylene-bis -(2-chloro-aniline, triol, sodium chloride and methyl ethyl ketone, or (c) a polyurethane, with and without a vinyl chloride-vinylidene chloride copolymer, dimethyl formamide and sodium chloride. The webs are then heated, calendered and leached in water. In control examples the sodium chloride is omitted from the mixtures.ALSO:A leather substitute is made by impregnating a non-woven felt with a solution of a polymer containing a solid particulate finely divide filler, heating to remove the solvent then leaching out the filler with a liquid which is non-solvent for the felt and polymer. The weight ratio of polymer to felt in the finished product is 0.38 to 1.5:1. The felt can be formed by mechanical entangling and have a density of 0.07-0.18 gm/cc. The impregnated felt can be calendered after removal of the solvent. The polymer can be a polyurethane, polyvinyl chloride, vinyl chloride-vinylidene chloride copolymer, vinyl chloride-vinylacetate copolymer, butadiene-styrene copolymer, polyacrylate, acrylonitrile rubber a polymer containing dialkyl or aryl alkyl siloxane units. The polymer can be formed in situ in the felt, e.g. by reacting a polyesteramide and an isocyanate or an impregnated polyurethane can be chain extended in situ, e.g. with 4.4\sv methylene-bis-(2 chloroaniline), or diol or triol or a mixture thereof. The heating can gel or cure the polymer. The polymer can contain thermal stabiliser and plasticiser e.g. dioctyl sebacate. The polymer solvent can be tetrahydrofuran. N-methyl pyrrolidone, dimethyl sulphoxide, dimethyl formamide solvent, naphtha or methyl ethyl ketone. The leachable filler may be water-soluble, e.g. salt, NaCl Na2SO4 or a sugar, or an acid-soluble substance such as chalk. The filler: polymer ratio can be 1/3 to 3:1. The impregnant can contain a surfactant, e.g. an alkali metal salt of a sulphonated dicarboxylic acid ester, on a pigment. The fibres forming the felt can be natural or synthetic staple fibres, e.g. of nylon, polyethylene, terephthalate, polypropylene or mixtures thereof.
GB3304864A 1964-08-13 1964-08-13 Improvements relating to the production of vapour permeable flexible sheet materials Expired GB1119573A (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
GB3304864A GB1119573A (en) 1964-08-13 1964-08-13 Improvements relating to the production of vapour permeable flexible sheet materials
DE19651469564 DE1469564A1 (en) 1964-08-13 1965-08-12 Process for the production of porous materials
FR28117A FR1456694A (en) 1964-08-13 1965-08-12 Manufacture of microporous materials
NL6510655A NL6510655A (en) 1964-08-13 1965-08-13

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB3304864A GB1119573A (en) 1964-08-13 1964-08-13 Improvements relating to the production of vapour permeable flexible sheet materials

Publications (1)

Publication Number Publication Date
GB1119573A true GB1119573A (en) 1968-07-10

Family

ID=10347834

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3304864A Expired GB1119573A (en) 1964-08-13 1964-08-13 Improvements relating to the production of vapour permeable flexible sheet materials

Country Status (3)

Country Link
DE (1) DE1469564A1 (en)
GB (1) GB1119573A (en)
NL (1) NL6510655A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2140836A (en) * 1983-05-31 1984-12-05 Albany Int Corp Papermakers felt
CN113652872A (en) * 2021-09-07 2021-11-16 中国科学院兰州化学物理研究所 A kind of emergency lubricating oil core material and preparation method thereof, oil-containing emergency lubricating oil core material and preparation method and application thereof

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102168382B (en) * 2011-04-02 2013-03-20 江苏国信合成革有限公司 High-cold-resistant synthetic leather and preparation method of the high-cold-resistant synthetic leather

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2140836A (en) * 1983-05-31 1984-12-05 Albany Int Corp Papermakers felt
CN113652872A (en) * 2021-09-07 2021-11-16 中国科学院兰州化学物理研究所 A kind of emergency lubricating oil core material and preparation method thereof, oil-containing emergency lubricating oil core material and preparation method and application thereof
CN113652872B (en) * 2021-09-07 2022-04-29 中国科学院兰州化学物理研究所 A kind of emergency lubricating oil core material and preparation method thereof, oil-containing emergency lubricating oil core material and preparation method and application thereof

Also Published As

Publication number Publication date
DE1469564A1 (en) 1968-12-19
NL6510655A (en) 1966-02-14

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