131.
    发明专利
    未知

    公开(公告)号:DK0792309T3

    公开(公告)日:2002-10-14

    申请号:DK95924943

    申请日:1995-06-27

    Applicant: BASF AG

    Abstract: The following are claimed: (A) biodegradable polyester P1, preparable by reaction of a mixt. comprising: (a1) a mixt. comprising: (a11) 35-95 mol.% of adipic acid and/or one or more ester-forming derivs. of this, (a12) 5-65 mol.% of terephthalic acid and/or one or more ester-forming derivs. of this, and (a13) 0-5 mol.% of a cpd. contg. sulphonate gps., the total of mol.% in (a11)-(a13) being 100 mol.%; and (a2) a dihydroxy cpd. selected from 2-6C alkane-diols and 5-10C cycloalkane-diols. The molar ratio of (a1) to (a2) is 0.4-1.5:1. In addn., 0.01-5 mol.% (based on the molar amt. of component (a1)) of a cpd. D, which comprises at least three gps. capable of forming ester gps., are also used for prodn. of polyester P1. Polyester P1 has (a) a mol.wt. (Mn) of 5000-50000 g/mol; (b) a viscosity no. of 30-350 g/ml (measured in o-dichlorobenzene/phenol (wt. ratio 50/50) at 25 degrees C and a P1 concn. of 0.5 wt.%); and (c) a m.pt. of 50-170 degrees C. (B) biodegradable polyester P2, preparable by reaction of a mixt. comprising: (b1) mixt. comprising: (b11) 20-95 mol.% of adipic acid and/or one or more ester-forming deriv. of this, (b12) 5-80 mol.% of terephthalic acid and/or one or more ester- forming deriv. of this, and (b13) 0-5 mol.% of a cpd. contg. sulphonate gps., the total of mol.% in (b11)-(b13) being 100 mol.%; (b2) a dihydroxy cpd. as (a2) above; (b3) 0.01-100 wt.% (based on the amt. of component (b1) of a hydroxycarboxylic acid B1 which is of formula (Ia) or (Ib); and (b4) 0-5 mol.% (based on the amt. of component (b1)) of a cpd. D. The molar ratio of (b1) to (b2) is 0.4-1.25:1. Polyester P2 has (a) a mol.wt. (Mn) of 5000-80000 g/mol; (b) a viscosity no. of 30 - 450 g/ml (measured in o-dichlorobenzene/phenol (wt. ratio 50/50) at 25 degrees C and a P2 concn. of 0.5 wt.%); and (c) a m.pt. of 50-235 degrees C. p = a whole no. from 1-1500; r = a whole no. from 1-4; G = phenylene, (CH2)k, C(R)H and C(R)HCH2; k = 1-5; R = Me or Et. (C) biodegradable polyester Q1 which have: (a) a mol.wt. (Mn) of 5000-100000 g/mol; (b) a viscosity no. of 30-450 g/ml (measured in o-dichlorobenzene/phenol (wt. ratio 50/50) at 25 degrees C and a Q1 concn. of 0.5 wt.%); and (c) a m.pt. of 50-235 degrees C. Q1 are obtained by reaction of a mixt. comprising; (c1) polyester P1 and/or a polyester PWD; (c2) 0.01-50 wt.% (based on (c1)) of a hydroxycarboxylic acid B1; and (c3) 0-5 mol.% (based on the amt. of component (a1) used in prodn. of P1 and/or PWD) of a cpd. D. Polyester PWD is obtainable by reaction of components (a1) and (a2) in a molar ratio of (a1) to (a2) of 0.4-1.5:1. Polyester PWD have: (a) a mol.wt. (Mn) of 5000 - 50000 g/mol; (b) a viscosity no. of 30 - 350 g/ml (measured in o-dichlorobenzene/phenol (wt. ratio 50/50) at 25 degrees C and a PWD concn. of 0.5 wt.%); and (c) a m.pt. of 50-170 degrees C. (D) biodegradable polyesters Q2 which have: (a) a mol.wt. (Mn) of 6000 - 60000 g/mol; (b) a viscosity no. of 30-350 g/ml (measured in o-dichlorobenzene/phenol (wt. ratio 50/50) at 25 degrees C and a Q2 concn. of 0.5 wt.%); and (c) a m.pt. of 50-170 degrees C. Q2 are obtained by reaction of a mixt. comprising: (d1) 95-99.9 wt.% of polyester P1 and/or PWD; and (d2) 0.1-50 wt.% of a diisocyanate C1; and (d3) 0-5 mol.% (based on the amt. of component (a1) used in prodn. of P1 and/or PWD) of a cpd. D. (E) biodegradable polymers T1 which have: (a) a mol.wt. (Mn) of 10000 - 100000 g/mol; (b) a viscosity no. of 30-450 g/ml (measured in o-dichlorobenzene/phenol (wt. ratio 50/50) at 25 degrees C and a T1 concn. of 0.5 wt.%); and (c) a m.pt. of 50-235 degrees C. T1 are obtd. by reaction of polyester Q1 with (e1) 0.1-5 wt.% (based on the amt. of Q1) of diisocyanate C1 and (e2) 0-5 mol.% (based on the amt. of component (a1) used in prodn. of Q1 via the polyester P1 and/or PWD) of a cpd. D. (F) biodegradable polymers T2 which have: (a) a mol.wt. (Mn) of 10000 - 100000 g/mol/. (b) a viscosity no. of 30-450 g/ml (measured in o-dichlorobenzene/phenol (wt. ratio 50/50) at 25 degrees C and a T2 concn. of 0.5 wt.%); and (c) a m.pt. of 50-235 degrees C. T2 are obtained by reaction of polyester Q2 with (f1) 0.01-50 wt.% (based on the amt. of Q2) of hydroxycarboxylic acid B1 and (f2) 0-5 mol.% (based on the amt. of component (a1) used in prodn. of Q2 via the polyester P1 and/or PWD) of a cpd

    Back sheet for hygiene articles, e.g. disposable diapers, contains a sheet of biodegradable polymer with high water vapor permeability and flexibility, consisting of a special partly aromatic polyester

    公开(公告)号:DE10054650A1

    公开(公告)日:2002-05-08

    申请号:DE10054650

    申请日:2000-11-03

    Applicant: BASF AG

    Abstract: A back sheet for hygiene articles contains a sheet of biodegradable polymer with high water vapor permeability and high flexibility, consisting of partly aromatic polyester based on an acid component comprising 50-70 mol% (cyclo)aliphatic dicarboxylic acid and 30-50 mol% aromatic dicarboxylic acid, plus (cyclo)alkanediol(s) and optional components. A back sheet for hygiene articles contains a sheet of biodegradable polymer (BP) with a water vapor permeability of 100-5000 g/m /24 hours (ASTM F 1249; at 38 deg C and 90% RH) and an elastic modulus of 20-300 MPa (ISO 527; cross-head speed 1 mm/min). The polymer (BP) is a partly aromatic polyester based on (A) an acid component comprising (a1) 50-70 mol% aliphatic and cycloaliphatic dicarboxylic acid(s) (or ester-forming derivatives), (a2) 30-50 mol% aromatic dicarboxylic acid(s) (or ester-forming derivatives) and (a3) 0-5 mol% of a compound with sulfonate groups, (B) 2-12C alkanediol(s) and 5-10C cycloalkanediol(s) and optionally the following: (C) a component selected from (c1) ether function-containing diols of formula HO-((CH2)n-O)m-H (I), (C2) hydroxy-acids of formula (IIa) or (IIb), (c3) 2-12C aminoalkanols and 5-10C aminocyclo-alkanols, (c4) diamino-(1-8C alkanes), (c5) 2,2'-bis-oxazolines of formula (III) and (c6) amino-acids selected from natural amino-acids, polyamides with a mol. wt. of not more than 18000 (by polymerisation of 4-6C diacids with 4-10C diamines), compounds of formula (IVa) or (IVb) and polyoxazolines with repeating units of formula (V) and (D) a component selected from (d1) compounds with at least 3 ester-forming groups, (d2) isocyanates and (d3) divinyl ethers. HO-(-C(O)-G-O-)pH (IIa) n = 2, 3 or 4; m = 2-250; p = 1-1500; r = 1-4; G = phenylene, -(CH2)q-, -CHR- or -CHR-CH2-; q = 1-5; R = methyl or ethyl; R = a single bond, -(CH2)z- or phenylene; z = 2, 3 or 4; s = 1-1500; t = 1-4; T = as for G, except that q = 1-12; R = H, 1-6C alkyl, 5-8C cycloalkyl, phenyl (optionally substituted with up to three 1-4C alkyl groups) or tetrahydrofurfuryl.

    METHOD FOR PRODUCING POLYAMIDE 6 OF A LOW EXTRACT CONTENT, HIGH VISCOSITY STABILITY AND LOW REMONOMERIZATION RATE

    公开(公告)号:BG105809A

    公开(公告)日:2002-03-29

    申请号:BG10580901

    申请日:2001-08-09

    Applicant: BASF AG

    Abstract: The invention relates to a continuous method for producing polyamides by reacting a least one aminonitrile with water. It comprises of the following steps: (1) reacting at least one aminonitrile with water at a temperature of 200 to 290 degrees C and a pressure of 40 to 70 bar in a stream tube which contains a Bronsted acid catalyst, selected from a beta zeolite, phyllosilicate or metal oxide catalyst in the form of a static catalyst; (2) addition of heat and expansion or adiabatic expansion of the reaction mixture in step (1) in a first deposition zone to a pressure of 20 to 40 bar, the pressure being at least 10 bar less than the pressure in step (1), and to a temperature in the range of from 220 to 290 degrees C, flash evaporation and removal of ammonia, water and oligomers of the aminonitrile; (3) further reacting the reaction mixture of step (2), while adding water at temperature of 200 to 290 degrees C and a pressure of 25 to 55 bar. The reaction optionally carried out in the presence of a Bronsted acid catalyst, selected from bet zeolite, phyllosilicate or metal oxide catalyst in the form of a static catalyst; (4) the addition of heat and expansion of adiabatic expansion of the reaction mixture of step (3) in a second deposition zone to a pressure of 0.01 to 20 bar, with the pressure being at least 20 bar less than the pressure on step (3), and to a temperature range from 200 to 290 degrees C, flash evaporation and removal of ammonia, water and optionally monomers and oligomers of the aminonitrile. 5 claims

    135.
    发明专利
    未知

    公开(公告)号:TR200102317T2

    公开(公告)日:2001-12-21

    申请号:TR200102317

    申请日:2000-02-10

    Applicant: BASF AG

    Abstract: The continuous process for producing polyamides by reacting at least one aminonitrile with water comprises the following steps:(10) reacting at least one aminonitrile with water at a temperature of from 200 to 290° C. at a pressure of from 40 to 70 bar in a flow tube containing a Brönsted acid catalyst selected from a beta-zeolite, sheet-silicate or metal oxide catalyst in the form of a fixed bed,(11) diabatically or adiabatically expanding the reaction mixture from step (1) into a first separation zone to a pressure of from 20 to 40 bar, the pressure being at least 10 bar lower than the pressure in step (1), and to a temperature within the range from 220 to 290° C. by flash evaporation and removal of ammonia, water and any aminonitrile monomer and oligomer,(12) further reacting the reaction mixture from step (2) in the presence of water at a temperature of from 200 to 290° C. and a pressure of from 25 to 55 bar and in the presence or absence of a Brönsted acid catalyst selected from a beta-zeolite, sheet-silicate or metal oxide catalyst in the form of a fixed bed,(13) diabatically or adiabatically expanding the reaction mixture from step (3) into a second separation zone to a pressure of from 0.01 to 20 bar, the pressure being at least 20 bar lower than the pressure in step (3), and to a temperature within the range from 220 to 290° C. by flash evaporation and removal of ammonia, water and any aminonitrile monomer and oligomer.

    Method for producing polyamide 6 of a low extract content, high viscosity stability and low remonomerization rate

    公开(公告)号:CZ20012883A3

    公开(公告)日:2001-12-12

    申请号:CZ20012883

    申请日:2000-02-10

    Applicant: BASF AG

    Abstract: The continuous process for producing polyamides by reacting at least one aminonitrile with water comprises the following steps:(10) reacting at least one aminonitrile with water at a temperature of from 200 to 290° C. at a pressure of from 40 to 70 bar in a flow tube containing a Brönsted acid catalyst selected from a beta-zeolite, sheet-silicate or metal oxide catalyst in the form of a fixed bed,(11) diabatically or adiabatically expanding the reaction mixture from step (1) into a first separation zone to a pressure of from 20 to 40 bar, the pressure being at least 10 bar lower than the pressure in step (1), and to a temperature within the range from 220 to 290° C. by flash evaporation and removal of ammonia, water and any aminonitrile monomer and oligomer,(12) further reacting the reaction mixture from step (2) in the presence of water at a temperature of from 200 to 290° C. and a pressure of from 25 to 55 bar and in the presence or absence of a Brönsted acid catalyst selected from a beta-zeolite, sheet-silicate or metal oxide catalyst in the form of a fixed bed,(13) diabatically or adiabatically expanding the reaction mixture from step (3) into a second separation zone to a pressure of from 0.01 to 20 bar, the pressure being at least 20 bar lower than the pressure in step (3), and to a temperature within the range from 220 to 290° C. by flash evaporation and removal of ammonia, water and any aminonitrile monomer and oligomer.

    138.
    发明专利
    未知

    公开(公告)号:ES2156210T3

    公开(公告)日:2001-06-16

    申请号:ES95925768

    申请日:1995-06-27

    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.

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