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75 条记录 (耗时 0.012 秒)

    Sulfonated butyl rubber latices
    61.
    发明授权
    Sulfonated butyl rubber latices 失效
    硫化丁苯橡胶胶粘剂

    公开(公告)号：US3779974A

    公开(公告)日：1973-12-18

    申请号：US3779974D

    申请日：1972-09-26

    申请人： EXXON RESEARCH ENGINEERING CO

    发明人： HUBBARD A ,  POWERS K

    IPC分类号： C08J3/07 ,  C08D5/00

    CPC分类号： C08J3/07 ,  C08J2323/32

    摘要： A RUBBER LATEX OF SULFONATED BUTYL RUBBER CONTAINING >0.5 MOLE PERCENT SO3H IS PREPARED BY FORMING AN EMULSION OF A SOLUTION OF SULFONATED BUTYL RUBBER IN A SUITABLE SOLVENT USING NON-IONIC EMULSIFIERS AND THEREAFTER STRIPPING OFF THE SOLVENT TO LEAVE A LATEX OF SULFONATED BUTYL RUBBER DISPERSED IN WATER. PRIOR TO STRIPPING THE SOLVENT, THE EMULSIFIERS ARE REMOVED FROM THE SYSTEM BY CENTRIFUGATION, THE SULFONATED BUTYL RUBBER BEING SELF-EMULSIFIABLE, ONCE IT HAS BEEN DISPERSED. PLASTICIZERS ARE ADDED TO THE LATEX TO PREVENT CRACKING OF FILMS PREPARED THEREFROM.

    Molecular sizing process for preparing low molecular isobutylene-conjugated polyene copolymers
    62.
    发明授权
    Molecular sizing process for preparing low molecular isobutylene-conjugated polyene copolymers 失效
    用于制备低分子量的异丁烯共聚物聚合物的分子筛分方法

    公开(公告)号：US3720654A

    公开(公告)日：1973-03-13

    申请号：US3720654D

    申请日：1971-05-21

    申请人： CITIES SERVICE CO

    发明人： OLECHOWSKI J

    IPC分类号： C08F8/50 ,  C08D5/00 ,  C08F1/88

    CPC分类号： C08F8/50 ,  C08F210/12 ,  C08F236/08

    摘要： LOW MOLECUAR WEIGHT BUTYL-TYPE COPOLYMERS HAVING NARROW MOLECULAR WEIGHT DISTRIBUTIONS ARE PREPARED BY CONTACTING A HIGHER MOLECULAR WEIGHT BUTYL-TYPE COPOLYMER, E.G., A BUTYL RUBBER, WITH A CATALYST COMPOSITION COMPRISING A TRANSITION METAL SALT, AN ORGANOMETALLIC COMPOUND OF A METAL OF GROUP I-A, II-A, II-B, OR III-A OF THE PERIODIC TABLE, A PROTON DONOR, AND HYDROGEN. THE CATALYST COMPOSITION PREFERABLY COMPRISES A HALIDE OF TUNGSTEN, MOLYBDENUM, OR RHENIUM, AN ALKYL ALUMINUM HALIDE, A LOWER ALKANOL, AND HYDROGEN.

    Diluent recovery process
    63.
    发明授权
    Diluent recovery process 失效
    稀释回收方法

    公开(公告)号：US3684783A

    公开(公告)日：1972-08-15

    申请号：US3684783D

    申请日：1970-11-05

    申请人： JOHN D LAUCK

    发明人： LAUCK JOHN D

    IPC分类号： C08C2/06 ,  C08F6/24 ,  C08F1/88 ,  C08D5/00

    CPC分类号： C08C2/06 ,  C08F6/24 ,  C08L23/02

    摘要： An improved process for separating a volatile organic diluent from a low density olefin polymer in solution of suspension comprises vaporizing the diluent with steam and water at an elevated temperature and separating a slurry of polymer and water; discharging a vapor stream containing a small amount of polymer particles into a cyclone vessel; withdrawing the vapors substantially free of polymer and recovering the diluent; and removing the separated particles from the cyclone with a flow of water at a downward velocity exceeding the rise velocity of the particles through the water to prevent agglomeration of the particles.

    摘要翻译： 在悬浮液中将挥发性有机稀释剂与低密度烯烃聚合物分离的改进方法包括在高温下用蒸汽和水蒸发稀释剂并分离聚合物和水的浆料; 将含有少量聚合物颗粒的蒸气流排放到旋风容器中; 取出基本上不含聚合物的蒸气并回收稀释剂; 并且以水流以超过通过水的颗粒的上升速度的下降速度从旋风分离器除去分离的颗粒，以防止颗粒的团聚。

    Heat-aged neoprene latex
    65.
    发明授权
    Heat-aged neoprene latex 失效
    加热的NEOPRENE LATEX

    公开(公告)号：US3639301A

    公开(公告)日：1972-02-01

    申请号：US3639301D

    申请日：1968-04-30

    申请人： DU PONT

    发明人： YOUKER MORTIMER A

    IPC分类号： C08C1/02 ,  C08G18/69 ,  C08D5/00 ,  C08D3/14 ,  C08D13/08

    CPC分类号： C08G18/696 ,  C08C1/02

    摘要： AN UMPROVED POLYCHLOROPRENE LATEX, USEFUL FOR MAKING POLYISOCYANATE-MODIFIED FOAMS, COMPRISES THE PRODUCT PRODUCED BY HEATING A FRESHLY PREPARED POLYCHLOROPRENE LATEX, HAVING A PH HIGHER THAN 11, AT A TEMPERATURE IN THE RANGE OF 60 TO 90* C. UNTIL THE PH IS LOWERED TO THE RANGE OF 9.5 TO 10. IN A PREFERRED EMBODIMENT THE HEATING IS CARRIED OUT ON A LATEX CONTAINING ABOUT 50% SOLIDS AND THE LATEX IS SUBSEQUENTLY CREAMED TO ABOUT 60% SOLIDS.

    High solids rubber latex and method
    66.
    发明授权
    High solids rubber latex and method 失效
    高固体橡胶薄膜和方法

    公开(公告)号：US3607807A

    公开(公告)日：1971-09-21

    申请号：US3607807D

    申请日：1969-06-13

    申请人： COPOLYMER RUBBER & CHEM CORP

    发明人： HUDDLESTON GEORGE R JR

    IPC分类号： C08C1/075 ,  C08D5/00

    CPC分类号： C08C1/075

    摘要： The preparation of a high solids, low viscosity rubber latex by blending a fast reaction latex of small particles with a slow reaction latex of large particles, before concentration, and preferably before stripping for removal of unreacted monomers, stripping and concentrating the blend to about 50 percent solids, freezing the concentrate after acidifying to a pH of about 8.3, and then thawing and concentrating the frozen blend to a solids content above 60 percent.

    Recovery of polymers from solution
    67.
    发明授权
    Recovery of polymers from solution 失效
    从溶液中回收聚合物

    公开(公告)号：US3590026A

    公开(公告)日：1971-06-29

    申请号：US3590026D

    申请日：1969-01-03

    申请人： PHILLIPS PETROLEUM CO

    发明人： CARLSON ROLLIN N ,  CHAPMAN WELDIN G

    IPC分类号： C08C2/06 ,  C08D5/00 ,  C08F1/92 ,  C08F1/96

    CPC分类号： C08C2/06 ,  Y10S159/10

    摘要： RECOVERY OF POLYMERS FROM SOLUTIONS THEREOF IN A HYDROCARBON SOLVENT BY A STEAM STRIPPING PROCESS IN WHICH WATER CONTAINING MAGNESIUM OR CALCIUM IONS IS EMPLOYED TO INCREASE EFFECTIVENESS OF DISPERSING AGENTS EMPLOYED TO PREVENT AGGLOMERATION OF POLYMERS. THE HARD WATER IS

    INTRODUCED INTO THE SYSTEM AT A LOCATION TO ACCOMPLISH THE ABOVE OBJECT AND TO PROVIDE ADDITIONAL PROCESSING ADVANTAGES.