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178 条记录 (耗时 0.016 秒)

    Ethylene/sulfur dioxide bipolymers and method of making
    71.
    发明授权
    Ethylene/sulfur dioxide bipolymers and method of making 失效
    乙烯/二氧化硫双酚A和其制备方法

    公开(公告)号：US3657202A

    公开(公告)日：1972-04-18

    申请号：US3657202D

    申请日：1970-04-28

    申请人： DU PONT

    发明人： HAMMER CLARENCE FREDERICK ,  SASHIHARA THOMAS FUJIO

    IPC分类号： C08G75/22 ,  C08L81/06 ,  C08F13/06

    CPC分类号： C08L81/06 ,  C08G75/22

    摘要： BIPOLYMERS OF ETHYLENE AND SULFUR DIOXIDE WHICH ARE ESSENTIALLY FREE OF 1:1 MOLAR RATIO OF ETHYLENE AND SULFUR DIOXIDE ARE PROVIDED. PROCESSES FOR PREPARING THESE BIPOLYMERS ARE ALSO PROVIDED. THE BIPOLYMERS CONSIST ESSENTIALLY OF AT LEAST ABOUT 50 PERCENT BY WEIGHT ETHYLENE AND ABOUT 0.1 TO 50 PERCENT BY WEIGHT SULFUR DIOXIDE. THE ABSENCE OF 1:1 MOLAR RATION OF ETHYLENE AND SULFUR DIOXIDE ARE EVIDENCED BY THE BIPOLYMERS HAVING AN ABSORPTION BAND AT ABOUT 16 TO 17U IN THE INFRARED SPECTRA AND BEING ESSENTIALLY FREE OF TWO ABSORPTION BANDS BETWEEN 13.5 AND 14U IN THE INFRARED SPECTRA, RESPECTIVELY. BY VARYING THE AMOUNT OF THE HIGHLY POLAR SULFUR DIOXIDE IN THE BIPOLYMERS, SHAPED ARTICLES (E.G., MOLDED ARTICLES AND FILMS) FROM THE BIPOLYMERS OR FROM BLENDS OF THE BIPOLYMERS WITH OTHER SOLID ORGANIC POLYMERS, SUCH AS A VINYL CHLORIDE POLYMER, CAN BE FLEXIBLE OR RIGID, AND POSSESS IMPROVED PROPERTIES OF POLYETHYLENE.

    Polysulfones
    73.
    发明授权
    Polysulfones 失效
    多晶硅

    公开(公告)号：US3576791A

    公开(公告)日：1971-04-27

    申请号：US3576791D

    申请日：1969-07-10

    申请人： SHELL OIL CO

    发明人： HOLLER HOWARD V ,  YOUNGMAN EDWARD A

    IPC分类号： C08G75/22 ,  C08F27/24 ,  C08F13/06

    CPC分类号： C08G75/22

    摘要： REACTION PRODUCTS ACCORDING TO THIS INVENTION ARE POLYSULFONES OF DIOLEFINS AND SO2 IN WHICH THE MOLAR RATIO OF DIOLEFIN-DERIVED MONOMER UNITS TO -SO2- IS GRATER THAN 1.2:2, AND THEIR HYDROGENATION PRODUCTS. POLYSULFONES OF THIS INVENTION EXHIBIT GREATER STABILITY IN SOLVENTS SUCH AS PHENOLS, COMPARED TO POLYSULFONES CONTAINING HYDROCARBON-DERIVED AND -SO2- UNITS IN 1:1 RATIO IN A PERFECTLY ALTERNATING STRUCTURE.

    Corrosion resistant metallic substrates
    74.
    发明授权
    Corrosion resistant metallic substrates 失效
    耐腐蚀金属基材

    公开(公告)号：US3563789A

    公开(公告)日：1971-02-16

    申请号：US3563789D

    申请日：1968-02-16

    申请人： DOW CHEMICAL CO

    发明人： MOORE WILLIAM ROSS

    IPC分类号： C08G75/22 ,  B32B15/08

    CPC分类号： C08G75/22 ,  Y10T428/273

    摘要： AN ARTICLE OF MANUFACTURE IS DESCRIBED WHICH COMPRISES A CORROSI ON RESISTANT METALLIC SUBSTRATE. THE NORMALLY CORROSION-PRONE METALLIC SUBSTRATE IS RENDERED CORROSION RESISTANT BY THE APPLICATION OF ABOUT 0.05 TO ABOUT 25 GRAMS OF A HIGH MOLECULAR WEIGHT OLEFIN POLYSULFONE PER SQUARE FOOT OF METALLIC SUBSTRATE. THE SUBSTRATE CAN BE PAINTED BEFORE OR AFTER THE APPLICATION OF THE RESIN. THE RESIN IS APPLIED TO THE SUBSTRATE BY MEANS OF A LIQUID DISPERSION CONTAINING THE DISPERSED RESIN SUCH AS WATER CONTAINING A SURFACTANT OR AN ORGANIC SOLVENT.