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    Manufacture of colorless high molecular polyphenylene ethers
    17.
    发明授权
    Manufacture of colorless high molecular polyphenylene ethers 失效
    无色高分子量聚苯乙烯的制备

    公开(公告)号：US3681285A

    公开(公告)日：1972-08-01

    申请号：US3681285D

    申请日：1971-02-24

    Applicant: BASF AG

    Inventor： NAARMANN HERBERT ,  WILLERSINN HERBERT

    IPC: C08G65/46 ,  C08G65/48 ,  C08G23/18 ,  C08G23/24

    CPC classification number: C08G65/485 ,  C08G65/46

    Abstract: A THERMOSTABLE POLYPHENYLENE ETHER IS OBTAINED BY OXIDATIVE COUPLING OF A TRISUBSTITUTED PHENOL AND TREATMENT OF THE POLYMERIC PRODUCT WITH A THIOL. POLYPHENYLENE ETHERS OBTAINED BY THE OXIDATIVE COUPLING OF TRISUBSTITUTED PHENOLS IN THE PRESENCE OF OXYGEN, AN ORGANIC SOLVENT AND A COPPER/AMINE COMPLEX ARE ACTED UPON AT TEMPERATURE BETWEEN 10* AND 100*C. FOR AT LEAST 5 SECONDS BY A THIOL OF THE GENERAL FORMULA HSR2 WHERE R2 STANDS FOR A LINEAR, BRANCHED OR CYCLIC ALKYL RADICAL HAVING FROM 2 TO 20 CARBONS ATOMS,

    -CH2-CH2-OH, -CH2-CH(-OH)-CH3, -CH2-CH(-C6H5)-OH,

    -CO-C6H5, -CH2-COOH, (4-HO-PHENYL)-, (4-(CH3-O-)PHENYL)

    , -(CH2)-NH2, OR (4-NH2-PHENYL)-

    THESE HIGH MOLECULAR WEIGHT POLYPHENYLENE ETHERS ARE SUITABLE FOR THE PRODUCTION OF THERMOSTABLE PLASTICS AND COATINGS.

    Production of stereo block butadiene polymer
    20.
    发明授权
    Production of stereo block butadiene polymer 失效

    公开(公告)号：US3489823A

    公开(公告)日：1970-01-13

    申请号：US3489823D

    申请日：1966-04-27

    Applicant: BASF AG

    Inventor： NAARMANN HERBERT ,  KASTNING ERNST-GUENTHER

    IPC: C08F136/06 ,  C08F297/02 ,  C08F3/18

    CPC classification number: C08F297/02 ,  C08F136/06 ,  C08F4/6421 ,  C08F4/68 ,  C08F4/68146 ,  C08F4/69146 ,  C08F4/64 ,  C08F4/6491 ,  C08F4/70

    Abstract: 1,138,299. Stereoblock butadiene polymers. BADISCHE ANILIN- & SODA-FABRIK A.G. 3 May, 1966 [4 May, 1965], No. 19366/66. Heading C3P. Stereoblock polymers are made by polymerizing butadiene with a Ziegler-Natta type catalyst comprising an alkyl metal compound and a compound of a transition metal of Groups IV to VIII, and whilst unreacted butadiene is still present in the polymerization mixture adding a catalyst of the same type but which converts butadiene into a polymer whose configuration is different to the configuration of the polybutadiene first prepared, and continuing the polymerization. In examples, effected in solvents, the following catalysts are used: (1) (C 2 H 5 ) 3 Al, AlBr 3 , and TiI 4 , followed by (C 2 H 5 ) 3 Al and VCl 3 , (2) as (1) but VCl 3 replaced by VCl 4 , (3) (C 4 H 9 ) 3 Al and TiCl 3 , followed by (C 2 H 5 ) 2 AlI and TiCl 3 , (4) (C 4 H 9 ) 2 AlCl and TiCl 3 , followed by (C 2 H 5 ) 2 AlI and TiCl 3 , (5) (C 2 H 5 ) 3 Al and TiCl 4 , followed by (C 2 H 5 ) 2 AlI and TiCl 3 , (6) (C 4 H 9 ) 3 Al and Ti(-OC 4 H 9 ) 4 , followed by (C 2 H 5 ) 3 Al and VCl 3 , (7) Cr triacetylacetonate and (C 4 H 9 ) 3 Al followed by (C 4 H 9 ) 3 Al, (8) Sn(C 4 H 9 ) 4 and ZrCl 4 , followed by amyl Na and TiCl 3 . The polymers may be sulphur vulcanized.

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