公开(公告)号：DE59600383D1

公开(公告)日：1998-09-03

申请号：DE59600383

申请日：1996-01-09

Applicant: BASF AG

Inventor： WARZELHAN VOLKER ,  SCHORNICK GUNNAR ,  BRAUN FRANK ,  SEELIGER URSULA ,  YAMAMOTO MOTONORI ,  BAUER PETER

IPC: C08G69/40 ,  C08G18/60 ,  C08G69/44 ,  C08G69/48 ,  C08G73/00 ,  C08G73/04 ,  C08J9/04 ,  C08K5/353 ,  C08L77/12 ,  C08L101/16 ,  C09J177/12 ,  D21H19/30

Abstract: PCT No. PCT/EP96/00059 Sec. 371 Date Jul. 3, 1997 Sec. 102(e) Date Jul. 3, 1997 PCT Filed Jan. 9, 1996 PCT Pub. No. WO96/21690 PCT Pub. Date Jul. 18, 1996Biodegradable polyetheresteramides P1 which are obtained by reacting (a1) a mixture containing 20-95 mol % of adipic acid or ester-forming derivatives thereof or mixtures thereof and 5-80 mol % of terephthalic acid or ester-forming derivatives thereof or mixtures thereof, and (a2) a mixture of dihydroxy compounds (a21) from 15 to 99.3 mol % of a dihydroxy compound selected from the group consisting of C2-C6-alkanediols and C5-C10-cycloalkanediols, (a22) from 0.2 to 85 mol % of a dihydroxy compound containing ether functionalities of the formula I HO-((CH2)n-O)m-H I where n is 2, 3 or 4 and m is an integer from 2 to 250, or mixtures thereof and (a23) from 0.5 to 80 mol % of an amino-C2-C12-alkanol or amino-C5-C10-cycloalkanol, where the molar ratio of (a1) to (a2) is from 0.4:1 to 1.5:1, with the proviso, inter alia, that the polyetheresteramides P1 have a molecular weight (Mn) in the range from 5000 to 80,000 g/mol, and biodegradable polymers, biodegradable moldings, and adhesives obtained from the disclosed polymers.

公开(公告)号：DE59600362D1

公开(公告)日：1998-08-27

申请号：DE59600362

申请日：1996-01-09

Applicant: BASF AG

Inventor： WARZELHAN VOLKER ,  SCHORNICK GUNNAR ,  KRONER MATTHIAS ,  SEELIGER URSULA ,  YAMAMOTO MOTONORI ,  RAMLOW GERHARD

IPC: A61L15/00 ,  A61L15/26 ,  A61L15/62 ,  B65D65/46 ,  C08G69/40 ,  C08G69/44 ,  C08G69/48 ,  C08G73/04 ,  C08K5/09 ,  C08L3/02 ,  C08L77/12 ,  C08L101/16 ,  C09D177/12 ,  C09J177/12

Abstract: PCT No. PCT/EP96/00064 Sec. 371 Date Jul. 3, 1997 Sec. 102(e) Date Jul. 3, 1997 PCT Filed Jan. 9, 1996 PCT Pub. No. WO96/21691 PCT Pub. Date Jul. 18, 1996Biodegradable polyetheresteramides Q1 with a molecular weight (Mn) in the range from 6000 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 polyetheresteramide Q1 at 25 DEG C.), and a melting point in the range from 50 DEG to 200 DEG C., obtained by reacting a1) from 95 to 99.9% by weight polyetheresteramide P1, obtained by reacting a mixture of b1) 20-95 mol % adipic acid or ester-forming derivatives thereof, and 5-80 mol % terephthalic acid or ester-forming derivatives thereof, and b2) a mixture of a dihydroxy compound selected from C2-C6-alkanediols and C5-C10-cycloalkanediols, b22) a dihydroxy compound which contains ether functionalities and has the formula IHO-((CH2)n-O))m-HIwhere n is 2, 3 or 4 and m is an integer from 2 to 250, and b23) from 0.5 to 80 mol % of an amino-C2-C12-alkanol or an amino-C5-C10-cycloalkanol, with or without b24) a diamino-C1-C8-alkane, and/or b25) a 2,2'-bisoxazoline where the molar ratio of (b1) to (b2) is in the range from 0.4:1 to 1.5:1, and a2) from 0.1 to 5% by weight of a divinyl ether C1.

公开(公告)号：AU695820B2

公开(公告)日：1998-08-20

申请号：AU2925395

申请日：1995-06-27

Applicant: BASF AG

Inventor： WARZELHAN VOLKER ,  SCHORNICK GUNNAR ,  BRUCHMANN BERND ,  SEELIGER URSULA ,  YAMAMOTO MOTONORI ,  BAUER PETER

IPC: C08L3/00 ,  A01G13/02 ,  C08G18/42 ,  C08G18/46 ,  C08G18/66 ,  C08G63/00 ,  C08G63/183 ,  C08G63/20 ,  C08G63/60 ,  C08G63/688 ,  C08G63/91 ,  C08L3/02 ,  C08L67/02 ,  C08L75/06 ,  C08L101/16 ,  C09D167/00 ,  C09K17/52

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

公开(公告)号：AU691317B2

公开(公告)日：1998-05-14

申请号：AU2978195

申请日：1995-06-27

Applicant: BASF AG

Inventor： WARZELHAN VOLKER ,  BRUCHMANN BERND ,  BOECKH DIETER ,  SEELIGER URSULA ,  YAMAMOTO MOTONORI ,  BAUER PETER

IPC: C08J9/00 ,  A01G9/10 ,  C05F17/00 ,  C08G18/42 ,  C08G18/46 ,  C08G63/60 ,  C08G63/668 ,  C08G63/672 ,  C08G63/685 ,  C08G63/688 ,  C08G63/91 ,  C08L1/00 ,  C08L67/02 ,  C08L75/06 ,  C08L101/16 ,  C09J167/02 ,  C09J175/06 ,  C09K15/32

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.

公开(公告)号：CZ208997A3

公开(公告)日：1998-04-15

申请号：CZ208997

申请日：1995-06-27

Applicant: BASF AG

Inventor： WARZELHAN VOLKER DR ,  SCHORNICK GUNNAR DR ,  BAUMANN EDWIN DR ,  SEELIGER URSULA DR ,  YAMAMOTO MOTONORI ,  RAMLOW GERHARD DR

IPC: C08G18/60 ,  C08G69/44 ,  C08G73/04 ,  C08J9/04 ,  C08L1/02 ,  C08L77/12 ,  C08L101/16 ,  C09D175/12 ,  C09J177/12 ,  D21H19/30

Abstract: Biodegradable polyesteramides as defined in the specification are obtained by reacting a mixture consisting essentially ofa1) a mixture consisting essentially of35 to 95 mol % of adipic acid or ester-forming derivatives thereof,5 to 65 mol % of terephthalic acid or ester-forming derivatives thereof, and0 to 5 mol % of a compound containing sulfonate groups,a2) a mixture consisting essentially of95.5 to 0.5 mol % of a dihydroxy compound,0.5 to 99.5 mol % of an amino-C2-C12-alkanol or an amino-C5-C10-cycloalkanol,0 to 50 mol % of a diamino-C1-C8-alkane, and0 to 50 mol % of a 2,2'-bisoxazoline of the formula I wherein R1 is as set forth in the specification, anda3) 0 to 5 mol %, based on a1), of a compound D as set forth in the specification;and other biodegradable polymers and thermoplastic molding compositions, their manufacture and their use for producing biodegradable moldings, adhesives, foams, and coatings.

公开(公告)号：NO973766L

公开(公告)日：1997-10-15

申请号：NO973766

申请日：1997-08-15

Applicant: BASF AG

Inventor： WARZELHAN VOLKER ,  PIPPER GUNTER ,  SEELIGER URSULA ,  BAUER PETER ,  BEIMBORN DIETER B ,  YAMAMOTO MOTONORI

IPC: C08G63/60 ,  C08G63/66 ,  C08J9/04 ,  C08G63/672 ,  C08G63/91 ,  C08L3/00 ,  C08L67/00 ,  C08L101/16 ,  C09J167/00 ,  D21H19/28

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.

公开(公告)号：MX9703538A

公开(公告)日：1997-08-30

申请号：MX9703538

申请日：1995-06-27

Applicant: BASF AG

Inventor： WARZELHAN VOLKER ,  SCHORNIK GUNNAR ,  BRUCHMANN BERND ,  SEELIGER URSULA ,  YAMAMOTO MOTONORI ,  BAUER PETER

IPC: A01G13/02 ,  C08G18/42 ,  C08G18/46 ,  C08L3/00 ,  C08G18/66 ,  C08G63/00 ,  C08G63/183 ,  C08G63/20 ,  C08G63/60 ,  C08G63/688 ,  C08G63/91 ,  C08L3/02 ,  C08L67/02 ,  C08L75/06 ,  C08L101/16 ,  C09D167/00 ,  C09K17/52

Abstract: Poliésteres biodegradables P1 que pueden obtenerse mediante la reaccion de una mezcla que consiste esencialmente de (a1) una mezcla que consiste esencialmente de 35 a 95% molar de ácido adípico o bien derivados de formacion de éster del mismo o mezclas de los mismos, de 5 a 65% molar de ácido tereftálico o bien derivados de formacion de éster del mismo o mezclas de los mismos, y de 0 a 5% molar de un compuesto de sulfonato, la suma de los porcentajes molares individuales es 100% molar y (a2) un compuesto dihidroxi seleccionado dentro del grupo que consiste de alcandioles C2-C6 y cicloalcandioles C5-C10, la promocion molar entre (a1) y (a2) se escoge dentro del rango de 0.4:1 a 1.5:1, a condicion de que los poliésteres P1 tengan un peso molecular (Mn) dentro del rango de 5000 a 50,000 g/mol, un índice de viscosidad dentro del rango de 30 a 350 g/ml (medido en 50:50 peso/peso de o-diclorobenceno/fenol en una concentracion de 0.5% en peso de poliéster P1 a 25°C) y un punto de fusion dentro del rango de 50 a 170°C y a condicion adicionalmente que los poliésteres P1 se preparen usando de 0.01 a 5% molar, en base a la cantidad molar empleada de componente (a1), de un componente D que tiene cuando menos tres grupos capaces de formacion de éster, y polímeros biodegradables adicionales así como composiciones de moldeo termoplásticas, proceso para la preparacion de los mismos, uso de los mismos para la produccion de moldeos biodegradables, y adhesivos, moldeos biodegradables, espumas y mezclas con almidon que pueden obtenerse a partir de los polímeros o bien composiciones de moldeo de la presente invencion.

公开(公告)号：MX9703537A

公开(公告)日：1997-08-30

申请号：MX9703537

申请日：1995-06-27

Applicant: BASF AG

Inventor： WARZELHAN VOLKER ,  BRUCHMANN BERND ,  BOECKH DIETER ,  SEELIGER URSULA ,  YAMAMOTO MOTONORI ,  BAUER PETER

IPC: C08J9/00 ,  A01G9/10 ,  C05F17/00 ,  C08G18/42 ,  C08G18/46 ,  C08G63/60 ,  C08G63/668 ,  C08G63/672 ,  C08G63/685 ,  C08G63/688 ,  C08G63/91 ,  C08L1/00 ,  C08L67/02 ,  C08L75/06 ,  C08L101/16 ,  C09J167/02 ,  C09J175/06 ,  C09K15/32

Abstract: Esteres de poliéster P1 biodegradables que pueden obtenerse mediante la reaccion de una mezcla que comprende esencialmente (a1) una mezcla que comprende esencialmente, de 20 a 95% molar de ácido adípico o bien de derivados de formacion de éster del mismo o bien mezclas de los mismos, de 5 a 80% molar de ácido tereftálico o bien de derivados de formacion de éster del mismo o mezclas de los mismos, y de 0 a 5% molar de un compuesto que contiene grupos sulfonato, donde el total de los porcentajes molares individuales es 100% molar, y (a2) una mezcla de compuestos dihidroxi que comprende esencialmente, (a21) de 15 a 99.8% molar de compuesto dihidroxi seleccionado dentro del grupo que consiste de alcandioles C2-C6 y cicloalcandioles C5-C10, (a22) de 85 a 0.2% molar de compuestos dihidroxi que contiene funcionalidades éter de la formula I, HO-((CH2)n-O)m-H, donde n es 2, 3 o bien 4 y m es un numero entero de 2 a 250, o bien mezclas de los mismos, donde la proporcion molar entre (a1) y (a2) se escoge dentro del rango de 0.4:1 a 1.5:1, a condicion que el éster de poliéter P1 tenga un peso molecular (Mn) dentro del rango de 5000 a 80,000 g/mol, un índice de viscosidad dentro del rango de 30 a 450 g/ml (medido en o-diclorobenceno/fenol (proporcion 50/50 en peso) en una concentracion de 0.5% en peso de éster poliéter P1 a 25°C) y un punto de fusion dentro del rango de 50 a 200°C, y a condicion adicionalmente que de 0.01 a 5% molar, en base a la cantidad molar del componente (a1) empleado, de un compuesto D con cuando menos tres grupos capaces de formacion de éster se emplee para preparar el éster de poliéter P1, y polímeros biodegradables adicionales así como composiciones termoplásticas para moldeo, procesos para la preparacion de las mismas, uso de los mismos para producir moldeos y adhesivos biodegradables, moldeos biodegradables, películas y mezclas con almidon que pueden obtenerse a partir de los polímeros y composiciones de moldeo de conformidad con la presente invencion.

公开(公告)号：FI973359A

公开(公告)日：1997-08-15

申请号：FI973359

申请日：1997-08-15

Applicant: BASF AG

Inventor： WARZELHAN VOLKER ,  PIPPER GUNTER ,  SEELIGER URSULA ,  BAUER PETER ,  BEIMBORN DIETER BERNHARD ,  YAMAMOTO MOTONORI

IPC: C08G63/60 ,  C08J9/04 ,  C08G63/66 ,  C08G63/672 ,  C08G63/91 ,  C08L3/00 ,  C08L67/00 ,  C08L101/16 ,  C09J167/00 ,  D21H19/28 ,  C08G

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.

公开(公告)号：NO972227A

公开(公告)日：1997-07-14

申请号：NO972227

申请日：1997-05-14

Applicant: BASF AG

Inventor： WARZELHAN VOLKER ,  BRUCHMANN BERND ,  BOECKH DIETER ,  SEELIGER URSULA ,  YAMAMOTO MOTONORI ,  BAUER PETER

IPC: C08J9/00 ,  A01G9/10 ,  C05F17/00 ,  C08G18/42 ,  C08G18/46 ,  C08G63/60 ,  C08G63/668 ,  C08G63/672 ,  C08G63/685 ,  C08G63/688 ,  C08G63/91 ,  C08L1/00 ,  C08L67/02 ,  C08L75/06 ,  C08L101/16 ,  C09J167/02 ,  C09J175/06 ,  C09K15/32

CPC classification number: C08G18/4676 ,  A01G24/00 ,  C05F17/009 ,  C08G18/4247 ,  C08G18/4286 ,  C08G63/60 ,  C08G63/672 ,  C08G2230/00 ,  C09K15/32 ,  Y02E50/343 ,  Y02P20/145 ,  Y02W30/43 ,  Y02W30/47

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.