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    Elastomeric film and product therefrom
    23.
    发明授权
    Elastomeric film and product therefrom 失效
    弹性薄膜和产品

    公开(公告)号：US3832214A

    公开(公告)日：1974-08-27

    申请号：US15771671

    申请日：1971-06-28

    Applicant: TENNECO CHEM

    Inventor： WANG W

    IPC: B32B27/00 ,  C08J9/28 ,  B29D27/04 ,  B44D1/09

    CPC classification number: C08J9/28 ,  B32B27/00 ,  C08J2201/0544

    Abstract: SUPPLE, MICROPOROUS, BREATHABLE ELASTOMERIC FILMS WITH A SYSTEM OF INTERCOMMUNICATING CELLS ARE DESCRIBED. THE FILMS WHICH OPTICALLY CONTAIN INERT ORGANIC OR INORGANIC PARTICLES VARYING IN SIZE FROM ABOUT 0.02 MICRON TO 150 MICRONS ARE PREPARED BY DEPOSITION FROM A SOLUTION SPREAD ON A SUITABLE SURFACE. DEPOSITION IS EFFECTED BY EXPOSURE OF THE SOLUTION TO A LIQUID WHICH IS MISCIBLE WITH THE SOLVENT BUT WHICH DOES NOT DISSOLVE THE ELASTOMER. THE USEOF THE FILM IN THE PREPARATION OF LEATHER REPLACEMENT COMPOSITIONS BY INTEGRATION AS A GRAIN LAYER IN AND ON THE SURFACE OF SUITABLE SUBSTRATES IS DESCRIBED. FOR THIS USE THE SELECTED SUBSTRATE IS WET WITH A LIQUID IN WHICH THE ELASTOMER IS INSOLUBLE, COATED WITH A SOLUTION OF THE ELASTOMER IN A SOLVENT WHICH IS MISCIBLE WITH THE LIQUID USED TO WET SUBSTRATE, AND THE WET, COATED SUBSTRATE IS TREATED WITH ADDITIONAL LIQUIE TO DEPOSIT THE ELASTOMER EXTENDING INTO THE UPPER STRATA OF THE SUBSTRATE AND ABOVE ITS SURFACE.

    Process for preparing a composite moisture-permeable sheet material
    25.
    发明授权
    Process for preparing a composite moisture-permeable sheet material 失效
    制备复合水分渗透性材料的方法

    公开(公告)号：US3565981A

    公开(公告)日：1971-02-23

    申请号：US3565981D

    申请日：1967-05-09

    Applicant: DU PONT

    Inventor： LAURO MICHAEL R

    IPC: C08J9/28 ,  D06N3/00 ,  D06N3/14 ,  B29D3/02 ,  B29D27/04

    CPC classification number: D06N3/0065 ,  C08J9/28 ,  C08J2201/0544 ,  D06N3/0013 ,  D06N3/0077 ,  D06N3/14 ,  Y10S428/904 ,  Y10T428/24438 ,  Y10T428/249978

    Abstract: A LEATHER-LIKE SHOE-UPPER MATERIAL USEFUL FOR THE MANUFACTURE OF HIGH QUALITY DRESS SHOES IS PREPARED BY FIRST MAKING A MOISTURE-PERMEABLE SHEET MATERIAL HAVING A LAYER OF MICROPOROUS POLYMERIC COMPOSITION IN SUPERPOSED ADHERENCE WITH A FIBROUS SUBSTRATE SUCH AS A SINGLE OR MULTIPLE LAYER FABRIC, SAID LAYER OF COMPOSITION HAVING A PORE STRUCTURE WHICH MAKES IT IMPOSSIBLE TO OBTAIN A UNIFORMAPPEARING FINISH UNDER PRACTICAL MANUFACTURING CONDITIONS WHEN ONE OF MORE FINISH COATS IS APPLIED AND THE COATED

    SURFACE IS GRAIN-EMBOSSED; THEN THE SHEET MATERIAL IS SUBJECTED TO HEAT AND PRESSURE UNDER CAREFULLY REGULATED CONDITIONS UNTIL THE PORE STRUCTURE OF SAID LAYER OF COMPOSITION IS MODIFIED AND CONSOLIDATED TO SUUCH AN EXTENT THAT THE SURFACE CAN BE FINISH-COATED AND GRAIN-EMBOSSED TO PROVIDE A PRODUCT HAVING NOT ONLY SATISFACTORY BREATHABILITY BUT ALSO OUTSTANDING UNIFORMITY IN SUCH CRITICAL APPEARANCE PROPERTIES AS COLOR, GRAIN PATTERN AND SMOOTHNESS.

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