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    11.
    发明专利
    未知

    公开(公告)号：FI934151A0

    公开(公告)日：1993-09-22

    申请号：FI934151

    申请日：1993-09-22

    Applicant: BASF AG

    Inventor： MUELLER HANS-JOACHIM ,  FOLLMER GODOFREDO ,  KONRAD RAINER ,  SAIVE ROLAND ,  LUX MARTIN ,  GOERTZ HANS-HELMUT ,  FUNK GUIDO

    IPC: C08F4/02 ,  C08F4/22 ,  C08F4/24 ,  C08F10/00

    Abstract: Process for the preparation of a supported catalyst for the polymerisation of alpha -olefins, in which (1) a support gel containing silicon dioxide is prepared by (1.1) introducing a sodium or potassium waterglass solution into a rotating stream of an aqueous mineral acid both longitudinally and tangentially to the stream, spraying the silicic acid hydrosol thus formed in droplet form into a gaseous medium, allowing it to solidify into a hydrogel and freeing the hydrogel thus obtained of salt by washing without prior aging, (1.2) drying the hydrogel resulting from (1.1) to form the support gel, and (2) the support gel (1) is loaded with chromium trioxide or a chromium compound which can be converted into chromium trioxide under the conditions of the process step (3), which results in a chromium-containing support gel, and (3) the chromium-containing support gel (2) is heated in an anhydrous gas stream containing oxygen in a concentration of over 10% by volume for from 10 to 1000 minutes at from 400 to 1100 DEG C, the hydrogel resulting from the process step (1.1) being dried in the process step (1.2) over a time of not more than 60 seconds in a shaping flash dryer at an inlet temperature of from 80 to 400 DEG C .

    12.
    发明专利
    未知

    公开(公告)号：DE3775287D1

    公开(公告)日：1992-01-30

    申请号：DE3775287

    申请日：1987-05-23

    Applicant: BASF AG

    Inventor： KONRAD RAINER ,  MUELLER-MALL RUDOLF ,  SCHWEIER GUENTHER

    IPC: C08F2/06 ,  C08F4/02 ,  C08F4/22 ,  C08F4/24 ,  C08F4/62 ,  C08F4/64 ,  C08F10/00 ,  C08F10/02

    Abstract: The carrier catalsyt is obtd. by 1) forming pre-prod. (I) from finely divided silicate carrier (II), finely divided CrO3, a P cpd. (III) which is an oxy-ester or acid, and an organic-Ti cpd. (IV) which is in oxidised state then activating (I) by 2) heating in dry N2 stream for 6-500 minutes at 150-300 deg. C 3) heating in dry gas stream contg. more than 10 vol.% O2 for 10-1000 minutes at 300-900 deg. C and 4) heating in dry N2 stream for 10-300 minutes at 50-400 deg. C. (I) is prepd. by a) suspending (II) of particle dia. 1-400 microns, pore vol. 0.5-3 cub. cm/g, and specific surface area 100-1000 sq. m/g in 150-5000 pts. wt. inert organic solvent per 100 pts. wt. (II) b) suspending CrO3 of particle dia. less than 2000 microns in more than 1 pt. wt. inert organic solvent per pt. wt. CrO3 c) thoroughly mixing suspension from b) with sufficient (III) at 0-60 deg. C to give 0-60 deg. C to give 0.6-10 pts. wt. P in (III) per pt. wt. Cr in the CrO3, and maintaining at this temp. for 5-300 minutes d) thoroughly mixing suspensions from a) and from c) at 0-60 deg. c at 0.1-5 pts. wt. Cr in the CrO3 per 100 pts. wt. (II) and maintaining at this temp. for 5-300 minutes e) thoroughly mixing combined suspensions with sufficient (IV) at 0-60 deg. C to give 0.1-10 pts. wt. Ti in the (IV) per 100 pts. wt. (II) and maintaining at this temp. for 5-300 minutes f) evaporating to dryness mixt. from e) at not more than 100 deg. C, opt. under reduced pressure to leave the catalyst carrier. (III) has formula P(O)(OR)3 or P(O)H(OR)2 where R = alkyl, aryl, or cycloalkyl of up to 12 C or H, at least one R not being H; (IV) has formula Ti(OR1)4 where R1 = alkyl, aryl, or cycloalkyl of up to 12 C.

    13.
    发明专利
    未知

    公开(公告)号：FI101885B1

    公开(公告)日：1998-09-15

    申请号：FI934151

    申请日：1993-09-22

    Applicant: BASF AG

    Inventor： MUELLER HANS-JOACHIM ,  FOLLMER GODOFREDO ,  KONRAD RAINER ,  SAIVE ROLAND ,  LUX MARTIN ,  GOERTZ HANS-HELMUT ,  FUNK GUIDO

    IPC: C08F4/02 ,  C08F4/22 ,  C08F4/24 ,  C08F10/00

    Abstract: Process for the preparation of a supported catalyst for the polymerisation of alpha -olefins, in which (1) a support gel containing silicon dioxide is prepared by (1.1) introducing a sodium or potassium waterglass solution into a rotating stream of an aqueous mineral acid both longitudinally and tangentially to the stream, spraying the silicic acid hydrosol thus formed in droplet form into a gaseous medium, allowing it to solidify into a hydrogel and freeing the hydrogel thus obtained of salt by washing without prior aging, (1.2) drying the hydrogel resulting from (1.1) to form the support gel, and (2) the support gel (1) is loaded with chromium trioxide or a chromium compound which can be converted into chromium trioxide under the conditions of the process step (3), which results in a chromium-containing support gel, and (3) the chromium-containing support gel (2) is heated in an anhydrous gas stream containing oxygen in a concentration of over 10% by volume for from 10 to 1000 minutes at from 400 to 1100 DEG C, the hydrogel resulting from the process step (1.1) being dried in the process step (1.2) over a time of not more than 60 seconds in a shaping flash dryer at an inlet temperature of from 80 to 400 DEG C .

    20.
    发明专利
    未知

    公开(公告)号：DE3775157D1

    公开(公告)日：1992-01-23

    申请号：DE3775157

    申请日：1987-10-09

    Applicant: BASF AG

    Inventor： KONRAD RAINER ,  HEMMERICH RAINER ,  MUELLER-MALL RUDOLF ,  SCHWEIER GUENTHER

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

    Abstract: Ethylene is polymerised, or copolymerised with minor amts. of 2-12C alpha-monoolefins, at 30-150 deg. C and 2-150 bar, using (a) a CrO3 catalyst and (b) a Li-alkyl cocatalyst of formula LiR, in atomic ratio of Cr : Li of 1 : 0.05-100. (a) The CrO3 catalyst is prepd. by (1) loading a finely divided, porous SiO2 carrier with CrO3, or a cpd. forming CrO3 in stage (2), in ratio by wt. of carrier : Cr of 100 : 0.1-10, and (2) heating the prod. from (1) at 400-1100 deg. C for 10-1000 mins., in a dry gas stream contg. more than 10 vols.% of O2. R = 2-6C alkyl.

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