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    11.
    发明专利
    未知

    公开(公告)号：DE59205482D1

    公开(公告)日：1996-04-04

    申请号：DE59205482

    申请日：1992-12-02

    Applicant: BASF AG

    Inventor： SCHMIDT-THUEMMES JUERGEN DR ,  ECKERT GUENTER DR

    IPC: C08F2/22 ,  C08F4/30 ,  C08F4/40 ,  C08F220/12

    Abstract: An aqueous polymer dispersion, films of which have increased elasticity at the same time as reduced surface tack and increased aging resistance on exposure to light, heat and oxygen, and the use thereof for coating leather.

    18.
    发明专利
    未知

    公开(公告)号：DE3778284D1

    公开(公告)日：1992-05-21

    申请号：DE3778284

    申请日：1987-10-20

    Applicant: BASF AG

    Inventor： KONRAD RAINER DR ,  FUNK GUIDO DR ,  SCHMIDT-THUEMMES JUERGEN DR ,  MUELLER-MALL RUDOLF DR ,  SCHWEIER GUENTHER DR

    IPC: C08F4/02 ,  C08F4/24 ,  C08F4/48 ,  C08F4/62 ,  C08F10/00 ,  C08F10/02

    Abstract: Ethylene is polymerised, or copolymerised with minor amts. of 3-12C alpha-monoolefins, at 30-150 deg.C and 2-150 bar, in presence of a Phillips catalyst comprising (1) a supported catalyst comprising a carrier loaded with oxidic Cr, oxidic P and oxidic Al, and (2) a cocatalyst. (1) The supported catalyst is prepd. by (1.1) forming a catalyst pre-prod. by (1.1.1) in a 1st sub-stage, forming a suspension by mixing (1.1.1.1) 100 pts. of a silicate carrier with particle size 1-400 microns, pore vol. 0.5-3 cc/g and surface 100-1000 square m/g, with (1.1.1.2) 150-5000 pts. of an inert organic solvent, (1.1.2) in a 2nd sub-stage, combining 5-500 pts. of a solvent with (1.1.2.2) 1 pt. of Cr as Cr3+, and (1.1.2.3) 0.5-10 pts. of Al as AlR23, and (I) holding the mixt. at 0-100 deg.C for 5-300 mins., (1.1.3) in a 3rd sub-stage, combining 100 pts. of the carrier (1.1.1.1) as the suspension from (1.1.1) with (1.1.3.2) a cpd. of formula P(O)(OR3)3 or P(O)H(OR3)2, and (1.1.3.3) the prod. from sub-stage (1.1.2), to give 0.1-5 pts. of Cr and 0.5-10 pts. of P, and holding the mixt. at 0-60 deg.C for 5-300 mins., (1.1.4) in a 4th sub-stage evaporating to dryness at not above 150 deg.C, and opt. under reduced pressure, the suspension obtd. in sub-stage (1.1.3) and then (1.2) in a 2nd stage, converting the catalyst pre-prod. from (1.1) to the supported catalyst by (1.2.1) in a 1st sub-stage holding the pre-prod. in a dry N2 stream at 150-300 deg.C for 60-500 mins., (1.2.2) in a 2nd sub-stage, holding the intermediate from (1.2.1) in a dry gas stream contg. more than 10 vols. % of O2 at 300-900 deg.C for 10-1000 mins., and finally (1.2.3) in a 3rd sub-stage, holding the intermediate from (1.2.2) in a dry N2 stream at 50-400 deg.C for 10-300 mins.

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