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    1,2-dialkoxybenzenes as ramdomizer for copolymerizations
    21.
    发明授权
    1,2-dialkoxybenzenes as ramdomizer for copolymerizations 失效
    作为共聚合的RAMDOMIZER的1,2-二烷氧基化物

    公开(公告)号：US3673166A

    公开(公告)日：1972-06-27

    申请号：US3673166D

    申请日：1970-12-28

    Applicant: PHILLIPS PETROLEUM CO

    Inventor： TREPKA WILLIAM J

    IPC: C08F236/10 ,  C08D1/32 ,  C08D3/02 ,  C08F19/08

    CPC classification number: C08F236/10 ,  C08F4/48

    Abstract: A method for copolymerizing monomeric materials using organolithium compounds as initiators in which 1,2dialkoxybenzene is introduced into the reaction in a quantity sufficient to produce random copolymers.

    Abstract translation: 使用有机锂化合物作为引发剂共聚单体材料的方法，其中1,2-二烷氧基苯以足以产生无规共聚物的量引入反应中。

    28.
    发明专利
    未知

    公开(公告)号：DE69415935T3

    公开(公告)日：2003-12-24

    申请号：DE69415935

    申请日：1994-11-14

    Applicant: PHILLIPS PETROLEUM CO

    Inventor： TREPKA WILLIAM J ,  STACY NATHAN E ,  MOCZYGEMBA GEORGE A ,  FARRAR JR RALPH C

    IPC: C08F8/44 ,  C08F297/02 ,  C08F297/04 ,  C08G81/02 ,  C08L25/04 ,  C08L25/06 ,  C08L53/02

    Abstract: A method of preparing a polymer under solution polymerization conditions in a reaction zone comprising: (a) charging a monovinylaromatic monomer and an initiator in the presence of a randomizer; thereafter (b) charging an initiator and a monovinylaromatic monomer; thereafter (c) charging a mixture of a monovinylaromatic monomer and conjugated diene monomer; thereafter (d) optionally charging a mixture of monovinylaromatic monomer and conjugated diene monomer; and thereafter (e) charging the reaction mixture with a coupling agent, wherein in each of steps (a) and (d) polymerization is conducted until essentially no free monomer is present.

    Tapered block copolymers of monovinylarenes and conjugated dienes
    29.
    发明专利
    Tapered block copolymers of monovinylarenes and conjugated dienes 未知

    公开(公告)号：SG73387A1

    公开(公告)日：2000-06-20

    申请号：SG1996004817

    申请日：1994-12-01

    Applicant: PHILLIPS PETROLEUM CO

    Inventor： MOCZYGEMBA GEORGE A ,  TREPKA WILLIAM J ,  KNIGHT NANCY R ,  STACY NATHAN E

    IPC: C08F297/02 ,  C08F297/04 ,  C08G81/02 ,  C08L53/02

    Abstract: A copolymer is prepd. in a reaction zone by: (a) introducing a monovinylaromatic monomer and an initiator in the presence of a randomiser and polymerising until no free monomer is present; (b) adding an initiator and a monovinylaromatic monomer and polymerising until no free monomer is present; (c) adding a mixt. of monovinylaromatic monomer and conjugated diene and polymerising until no free monomer is present; (d) adding a mixt. of monovinylaromatic monomer and conjugated diene monomer and polymerising until no free monomer is present; (e) adding a conjugated diene monomer and allowing complete polymerisation to occur until no free monomer is present; and (f) adding a coupling agent. Only two initiator charges are present and are added in steps (a) and (b). Also claimed are (i) polymodal copolymers produced by the method; (ii)-articles made from the copolymers, and (ii) a polymodal coupled block copolymer having chains resulting from coupling; S-S-B/S-B/S-B-Li S-B/S-B/S-B-Li S = monovinyl aromatic block; B = conjugated diene block; B/S = tapered B and S block; and Li = living polymer or coupling site.

    TAPERED BLOCK STYRENE/BUTADIENE COPOLYMERS
    30.
    发明专利
    TAPERED BLOCK STYRENE/BUTADIENE COPOLYMERS 未知

    公开(公告)号：CA2028410C

    公开(公告)日：1996-09-17

    申请号：CA2028410

    申请日：1990-10-24

    Applicant: PHILLIPS PETROLEUM CO

    Inventor： TREPKA WILLIAM J ,  MOCZYGEMBA GEORGE A ,  FARRAR RALPH C JR

    IPC: C08F297/04 ,  C08J5/18

    Abstract: A method for preparing tapered block copolymers in a polymerization process by charging an initiator and monomers sequentially with one or more charges of first one of the monomers, then with a mixture of the two monomers, and then with one or more charges of the second monomer alternating with one or more charges of the first monomer to produce a polymodal tapered block copolymer. Suitable monomers include conjugated dienes and monovinylaromatic compounds. The copolymers are particularly useful for shrink film packaging applications.

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