GB1136938A - Permeable structures - Google Patents

Permeable structures

Info

Publication number
GB1136938A
GB1136938A GB18093/66A GB1809366A GB1136938A GB 1136938 A GB1136938 A GB 1136938A GB 18093/66 A GB18093/66 A GB 18093/66A GB 1809366 A GB1809366 A GB 1809366A GB 1136938 A GB1136938 A GB 1136938A
Authority
GB
United Kingdom
Prior art keywords
layer
solution
contain
polyurethane
solvent
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
GB18093/66A
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.)
Carl Freudenberg KG
Original Assignee
Carl Freudenberg KG
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 Carl Freudenberg KG filed Critical Carl Freudenberg KG
Publication of GB1136938A publication Critical patent/GB1136938A/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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C67/00—Shaping techniques not covered by groups B29C39/00 - B29C65/00, B29C70/00 or B29C73/00
    • B29C67/20—Shaping techniques not covered by groups B29C39/00 - B29C65/00, B29C70/00 or B29C73/00 for porous or cellular articles, e.g. of foam plastics, coarse-pored
    • B29C67/202—Shaping techniques not covered by groups B29C39/00 - B29C65/00, B29C70/00 or B29C73/00 for porous or cellular articles, e.g. of foam plastics, coarse-pored comprising elimination of a solid or a liquid ingredient
    • 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
    • D06N3/12—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 otherwise than by reactions only involving carbon-to-carbon unsaturated bonds, e.g. gelatine proteins
    • D06N3/14—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 otherwise than by reactions only involving carbon-to-carbon unsaturated bonds, e.g. gelatine proteins with polyurethanes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
    • B29K2075/00—Use of PU, i.e. polyureas or polyurethanes or derivatives thereof, as moulding material
    • 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
    • C08J2375/00—Characterised by the use of polyureas or polyurethanes; Derivatives of such polymers
    • C08J2375/04—Polyurethanes

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Polymers & Plastics (AREA)
  • Health & Medical Sciences (AREA)
  • Medicinal Chemistry (AREA)
  • Materials Engineering (AREA)
  • Organic Chemistry (AREA)
  • Mechanical Engineering (AREA)
  • Dispersion Chemistry (AREA)
  • Textile Engineering (AREA)
  • Manufacture Of Porous Articles, And Recovery And Treatment Of Waste Products (AREA)
  • Manufacture Of Macromolecular Shaped Articles (AREA)
  • Synthetic Leather, Interior Materials Or Flexible Sheet Materials (AREA)

Abstract

1136938 Permeable polyurethane coatings CARL FREUDENBERG 25 April 1966 [24 April 1965] 18093/66 Heading B2E [Also in Division B5] A permeable layer of polyurethane is formed by coagulation from a polyurethane solution in a solvent mixture of dimethylsulphoxide with at least one of tetrahydrofuran, acetone, 1,4-dioxane, or methylethyl ketone, the proportions of the solvents being chosen such that the permeability of the layer obtained is higher than that of a layer obtained when the solvent is dimethyl sulphoxide alone. The solvent may contain 10 to 30% tetrahydrofuran, 20 to 40% dioxane, 10 to 30% acetone, or 40 to 60% ethyl methyl ketone. The solution may also contain an emulsifier. Artificial leather may be produced by applying the solution to a fabric, and coagulating the solution to form a permeable layer thereon. The fabric may be woven, knitted, non-woven, or batting, and may be composed or natural or synthetic organic or inorganic fibres e.g. cellulose, polyamides. polyesters, wool, silk, linen and acrylic fibres, a fleece of polyamide fibres containing butadiene - acrylonitrile as binder being specified. Coagulation may be effected by addition of water, lower alcohols, n-hexane, toluene, or mixtures thereof. The layer may be physically treated by applying a suitable finish, roughening or polishing. The layer may contain dyes or pigments.
GB18093/66A 1965-04-24 1966-04-25 Permeable structures Expired GB1136938A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE1965F0045894 DE1263292C2 (en) 1965-04-24 1965-04-24 Process to increase the breathability of polyurethane foils or coatings

Publications (1)

Publication Number Publication Date
GB1136938A true GB1136938A (en) 1968-12-18

Family

ID=7100733

Family Applications (1)

Application Number Title Priority Date Filing Date
GB18093/66A Expired GB1136938A (en) 1965-04-24 1966-04-25 Permeable structures

Country Status (3)

Country Link
US (1) US3536639A (en)
DE (1) DE1263292C2 (en)
GB (1) GB1136938A (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2034538C3 (en) * 1970-07-11 1980-09-11 Bayer Ag, 5090 Leverkusen Process for the production of microporous sheet-like structures
DE3525731A1 (en) * 1985-07-16 1987-01-22 Wilfried Dr Ing Lemm Process for the production of a non-toxic plastic foam article
EP4345124A1 (en) * 2022-09-29 2024-04-03 Universität Innsbruck Method for separating polyurethane from a textile

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA639553A (en) * 1962-04-10 A. Johnston Robert Microporous polymeric coatings as leather substitute
US2884336A (en) * 1955-01-27 1959-04-28 Rohm & Haas Methods for producing coated leather and the products thereof
US3000757A (en) * 1957-01-28 1961-09-19 Du Pont Process for coating substrates with a vapor permeable polymeric coating
US3100721A (en) * 1961-02-21 1963-08-13 Du Pont Process for producing microporous films and coatings
US3061629A (en) * 1958-11-19 1962-10-30 Celanese Corp Dialkyl sulfoxide in preparation of isocyanate-polyol adduct
FR1296758A (en) * 1961-05-15 1962-06-22 Du Pont Manufacturing process of sheet materials, vapor permeable
US3190765A (en) * 1961-06-26 1965-06-22 Du Pont Vapor permeable sheet material and method of making same
DE1544864A1 (en) * 1963-07-24 1970-05-21 Bayer Ag Process for the production of polyurethane elastomers
US3348963A (en) * 1964-11-14 1967-10-24 Kurashiki Rayon Co Method of producing gas-permeable elastic polyurethane films

Also Published As

Publication number Publication date
US3536639A (en) 1970-10-27
DE1263292C2 (en) 1974-03-07
DE1263292B (en) 1968-03-14

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