Biodegradable polymers, preparation thereof and use thereof for producing biodegradable moldings,申请号US19970836037-传众专利搜索

Biodegradable polymers, preparation thereof and use thereof for producing biodegradable moldings

申请公布号：US6018004(A)

申请号：US19970836037

申请日期：1997.05.14

申请公布日期：2000.01.25

申请人：

BASF AKTIENGESELLSCHAFT

发明人：WARZELHAN, VOLKER;SCHORNICK, GUNNAR;BRUCHMANN, BERND;SEELIGER, URSULA;YAMAMOTO, MOTONORI;BAUER, PETER

分类号：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;(IPC1-7):C08F20/00;C08G18/08;C08G63/12

主分类号：C08L3/00

摘要：PCT No. PCT/EP95/02491 Sec. 371 Date May 14, 1997 Sec. 102(e) Date May 14, 1997 PCT Filed Jun. 27, 1995 PCT Pub. No. WO96/15173 PCT Pub. Date May 23, 1996Biodegradable polyesters P1 obtainable by reaction of a mixture consisting essentially of (a1) a mixture consisting essentially of from 35 to 95 mol % of adipic acid or ester-forming derivatives thereof or mixtures thereof, from 5 to 65 mol % of terephthalic acid or ester-forming derivatives thereof or mixtures thereof, and from 0 to 5 mol % of a sulfonate compound, the sum of the individual mole percentages being 100 mol %, and (a2) a dihydroxy compound selected from the group consisting of C2-C6-alkanediols and C5-C10-cycloalkanediols, the molar ratio of (a1) to (a2) being chosen within the range from 0.4:1 to 1.5:1, with the proviso that the polyesters P1 have a molecular weight (Mn) within the range from 5000 to 50,000 g/mol, a viscosity number within the range from 30 to 350 g/ml (measured in 50:50 w/w o-dichlorobenzene/phenol at a concentration of 0.5% by weight of polyester P1 at 25 DEG C.) and a melting point within the range from 50 to 170 DEG C. and with the further proviso that the polyesters P1 are prepared using from 0.01 to 5 mol %, based on the molar quantity used of component (a1), of a compound D having at least three groups capable of ester formation, and further biodegradable polymers and thermoplastic molding compositions, processes for the preparation thereof, use thereof for producing biodegradable moldings, and adhesives, biodegradable moldings, foams and blends with starch obtainable from the polymers or molding compositions of the present invention.