11.
    发明专利
    未知

    公开(公告)号:AT194153T

    公开(公告)日:2000-07-15

    申请号:AT97943850

    申请日:1997-09-19

    Applicant: BASF AG

    Abstract: PCT No. PCT/EP97/04908 Sec. 371 Date Mar. 17, 1999 Sec. 102(e) Date Mar. 17, 1999 PCT Filed Sep. 19, 1997 PCT Pub. No. WO98/12242 PCT Pub. Date Mar. 20, 1998Biodegradable polyesters based on A) 95-99.99 mol % of at least one polyester A containing as monomeric building blocks of an acid component comprising a11) 20-95 mol % of at least one aliphatic or cycloaliphatic dicarboxylic acid or its ester-forming derivative and a12) 5-80 mol % of at least one aromatic dicarboxylic acid or its ester-forming derivative and at least one dihydroxy compound or at least one amino alcohol or their mixtures, and B) 0.01-5 mol % of a mixture comprising mono-, bi-, tri-, tetra- and higher-nuclear isocyanurates or corresponding compounds containing two, three or four functional groups capable of reacting with the end groups of polyester A, or mixtures of the isocyanurates and the corresponding compounds, as well as molding compositions comprising said polyesters, their manufacture and their use in the manufacture of moldings, filsm, fibers and coatings.

    13.
    发明专利
    未知

    公开(公告)号:BR9805747A

    公开(公告)日:1999-12-14

    申请号:BR9805747

    申请日:1998-12-30

    Applicant: BASF AG

    Abstract: Continuous gas phase polymerization for producing ethylene homopolymers and -copolymers, comprises polymerizing ethylene or monoolefin from but-1-en, pent-1-en, 2-methylpentene, hex-1-en, hept-1-en and oct-1-en in the a polymerization reactor; and endowing a catalyst poison with boiling point higher than a circle gas pipeline, and molecular weight greater than 100 g/mol at a position after the reactor, but before the cooler and compressor. Continuous gas phase polymerization for producing ethylene homopolymers and -copolymers, comprises polymerizing ethylene and/or monoolefin from but-1-en, pent-1-en, 2-methylpentene, hex-1-en, hept-1-en or oct-1-en, in the polymerization zone of a gas phase polymerization reactor at 30-125[deg]C and 1-100 bar in the gaseous phase in a finely divided polymer bed, in the presence of a metallocene catalyst in carrier form polymer, where a reactor gas is lead into the circle gas pipeline for the removal of the polymerization heat; and endowing a catalyst poison with boiling point higher than circle gas pipeline and molecular weight greater than 100 g/mol at a position after the reactor but before the cooler and compressor, for preventing polymer linings, such that the productivity of the catalyst is not essentially affected in the reactor.

    GAS PHASE FLUIDIZED BED METHOD AND ETHYLENE HOMO- AND COPOLYMERS OBTAINED USING SAID METHOD

    公开(公告)号:CA2312092A1

    公开(公告)日:1999-06-17

    申请号:CA2312092

    申请日:1998-11-26

    Applicant: BASF AG

    Abstract: The invention relates to a continuous gas phase fluidization method for producing ethylene homopolymerisates and copolymerisates with a density (d) of 0.87 to 0.97 g/cm3. According to said method, ethylene or mixtures of ethylene and C3- to C8-.alpha.-monoolefins are (co)polymerised in the polymerisation zone of a gas phase fluidized bed reactor at pressures of 1 to 100 bar and at temperatures of 30 to 125 ~C in the gas phase in an intermixed bed of fine particulate polymerisate in the presence of a supported chromium catalyst. The polymerisation heat produced is evacuated by cooling the reactor gas, said reactor gas being guided in a closed circuit, and the resulting (co)polymerisate is transferred out of the gas phase fluidized bed reactor. In order to produce a (co)polymerisate of a pre-selected density (d), the (co)polymerisation is carried out at a temperature within a range limited by an upper envelope of equation (I) and a lower envelope of equation (II), the variables in said equations having the following meanings: TH = the highest reaction temperature in ~C; TN = the lowest reaction temperature in ~C; and d'= the numerical value of the density (d) of the (co)polymerisate to be produced.

    15.
    发明专利
    未知

    公开(公告)号:DE19754380A1

    公开(公告)日:1999-06-10

    申请号:DE19754380

    申请日:1997-12-09

    Applicant: BASF AG

    Abstract: The invention relates to a continuous gas phase fluidization method for producing ethylene homopolymerisates and copolymerisates with a density (d) of 0.87 to 0.97 g/cm . According to said method, ethylene or mixtures of ethylene and C3- to C8- alpha -monoolefins are (co)polymerised in the polymerisation zone of a gas phase fluidized bed reactor at pressures of 1 to 100 bar and at temperatures of 30 to 125 DEG C in the gas phase in an intermixed bed of fine particulate polymerisate in the presence of a supported chromium catalyst. The polymerisation heat produced is evacuated by cooling the reactor gas, said reactor gas being guided in a closed circuit, and the resulting (co)polymerisate is transferred out of the gas phase fluidized bed reactor. In order to produce a (co)polymerisate of a pre-selected density (d), the (co)polymerisation is carried out at a temperature within a range limited by an upper envelope of equation (I) and a lower envelope of equation (II), the variables in said equations having the following meanings: TH = the highest reaction temperature in DEG C; TN = the lowest reaction temperature in DEG C; and d'= the numerical value of the density (d) of the (co)polymerisate to be produced.

    Polymer mixture, especially for production of film

    公开(公告)号:DE19745047A1

    公开(公告)日:1999-04-15

    申请号:DE19745047

    申请日:1997-10-11

    Applicant: BASF AG

    Abstract: A polymer mixture with good processing properties, e.g. for blown or cast film, contains an ethylene copolymer and another ethylene copolymer with a higher density and a broader molecular weight distribution. A polymer mixture is claimed containing at least 40-85 wt% ethylene copolymer (A) with a density of 0.91-0.93 g/cm , a high-load melt flow rate (HLMFR; 190/21.6) of 5-60 g/10 mins. and a mol. wt. distribution (Mw/Mn) of not more than 3, and more than 15 but not more than 60 wt% ethylene copolymer (B) with a density of 0.93-0.945 g/cm , an HLMFR of 8-20 g/10 mins. and an Mw/Mn ratio of at least 7. Independent claims are also included for (a) a process for the production of film from this polymer mixture; (b) film produced from the polymer mixture.

    17.
    发明专利
    未知

    公开(公告)号:ES2119564T3

    公开(公告)日:1998-10-01

    申请号:ES96900928

    申请日:1996-01-08

    Applicant: BASF AG

    Abstract: PCT No. PCT/EP96/00067 Sec. 371 Date Jul. 3, 1997 Sec. 102(e) Date Jul. 3, 1997 PCT Filed Jan. 8, 1996 PCT Pub. No. WO96/21692 PCT Pub. Date Jul. 18, 1996Biodegradable polyesteramides as defined in the specification obtained by reacting a mixture consisting essentially of (a1) from 95 to 99.9% by weight of a polyesteramide, (a2) from 0.1 to 5% by weight of a divinyl ether, and (a3) from 0 to 5 mol % of compound D as defined in the specification, and other biodegradable polymers and thermoplastic molding compositions, processes for the preparation thereof, the use thereof for producing biodegradable moldings, and adhesives, biodegradable moldings obtained from the polymers and molding compositions according to the invention.

    18.
    发明专利
    未知

    公开(公告)号:FI973358A

    公开(公告)日:1997-08-15

    申请号:FI973358

    申请日:1997-08-15

    Applicant: BASF AG

    Abstract: PCT No. PCT/EP96/00458 Sec. 371 Date Aug. 14, 1997 Sec. 102(e) Date Aug. 14, 1997 PCT Filed Feb. 3, 1996 PCT Pub. No. WO96/25448 PCT Pub. Date Aug. 22, 1996Biodegradable polymers comprising a polyether ester P1 obtained by reacting a first mixture of 20-95 mol% of adipic acid or ester-forming derivatives thereof or mixtures thereof, 5-80 mol% of terephthalic acid or ester-forming derivatives thereof or mixtures thereof, and 0-5 mol% of a compound containing sulfonate groups, and a second mixture of 15-99.8 mol% of a dihydroxy compound selected from the group consisting of C2-C6-alkanediols and C5-C10-cycloalkanediols, 85-0.2 mol% of a dihydroxy compound IHO-[(CH2)n-O]m-H(n=2, 3 or 4, m=2-250) with 0-5 mol%, based on the first mixture, of a compound D having at least three groups capable of ester formation, and a bisoxazoline C1, their preparation and their use in the manufacture of biodegradable molding materials.

    19.
    发明专利
    未知

    公开(公告)号:NO972227L

    公开(公告)日:1997-07-14

    申请号:NO972227

    申请日:1997-05-14

    Applicant: BASF AG

    Abstract: Biodegradable polyether esters P1 obtainable by reacting a mixture essentially comprising(a1) a mixture essentially comprising20-95 mol % of adipic acid or ester-forming derivatives thereof or mixtures thereof,5-80 mol % of terephthalic acid or ester-forming derivatives thereof or mixtures thereof, and0-5 mol % of a compound containing sulfonate groups,where the total of the individual mole percentages is 100 mol %, and(a2) a mixture of dihydroxy compounds essentially comprising(a21) from 15 to 99.8 mol % of a dihydroxy compound selected from the group consisting of C2-C6-alkanediols and C5-C10-cycloalkanediols,(a22) from 85 to 0.2 mol % of a dihydroxy compound containing ether functionalities of the formula Iwhere n is 2, 3 or 4 and m is an integer from 2 to 250, or mixtures thereof,where the molar ratio of (a1) to (a2) is chosen in the range from 0.4:1 to 1.5:1, with the proviso that the polyether ester P1 has a molecular weight (Mn) in the range from 5000 to 80,000 g/mol, a viscosity number in the range from 30 to 450 g/ml (measured in o-dichlorobenzene/phenol (50/50 ratio by weight) at a concentration of 0.5% by weight of polyether ester P1 at 25° C.) and a melting point in the range from 50 to 200° C., and with the further proviso that from 0.01 to 5 mol %, based on the molar quantity of component (a1) employed, of a compound D with at least three groups capable of ester formation are employed to prepare the polyether ester P1,and further biodegradable polymers and thermoplastic molding compositions, processes for the preparation thereof, the use thereof for producing biodegradable moldings and adhesives, biodegradable moldings, films and blends with starch obtainable from the polymers and molding compositions according to the invention.

    20.
    发明专利
    未知

    公开(公告)号:DE19505186A1

    公开(公告)日:1996-10-31

    申请号:DE19505186

    申请日:1995-02-16

    Applicant: BASF AG

    Abstract: PCT No. PCT/EP96/00457 Sec. 371 Date Aug. 14, 1997 Sec. 102(e) Date Aug. 14, 1997 PCT Filed Mar. 5, 1996 PCT Pub. No. WO96/25446 PCT Pub. Date Aug. 22, 1996Biodegradable polyesters having a molecular weight (Mn) of from 5000 to 50,000 g/mol (measured by gel permeation chromatography), a viscosity number of from 30 to 350 g/ml (measured in 50:50 by weight of o-dichlorobenzene/phenol at a concentration of 0.5% by weight of polyester at 25 DEG C.), and a melting point of from 50 to 170 DEG C., and having both hydroxyl and carboxyl end groups, the molar ratio of carboxyl end groups to hydroxyl end groups being greater than one, which is obtained by reacting a mixture consisting essentially of a1) a mixture consisting essentially of from 45 to 80 mol % of adipic acid or ester-forming derivatives thereof, or mixtures thereof, from 20 to 55 mol % of terephthalic acid or ester-forming derivatives thereof, or mixtures thereof, and from 0 to 5 mol % of a sulfonate compound, where the sum of the individual mole percentages is 100 mol %, and a2) a dihydroxy compound selected from the group consisting of C2-C6-alkanediols and C5-C10-cycloalkanediols, in the presence of from 0.01 to 5 mol %, per mol of component a1), of a compound D having at least three groups capable of ester formation, the molar ratio of a1) to a2) being from 0.4:1 to 1.5:1, polymers and biodegradable thermoplastic molding compositions, processes for their preparation and their use for producing biodegradable moldings, adhesives, foams and blends with starch obtained from the polymers or molding compositions.

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