发明名称 |
METHOD FOR MAKING BIODEGRADABLE POLYHYDROXYALKANOATE COPOLYMERS HAVING IMPROVED CRYSTALLIZATION PROPERTIES |
摘要 |
A method for enhancing the rate of a first biodegradable polyhydroxyalkanoate comprising a copolymer, or a blend thereof, of at least two randomly repeating monomer units (RRMU), wherein the first RRMU has the structure (I) wherein R<1> is H, or C1 or C2 alkyl, and n is 1 or 2; and the second RRMU is different from the first RRMU and comprises at least one monomer selected from the group consisting of the structures (II) wherein R<2> is a C3-C19 alkyl or C3-C19 alkenyl, and (III) wherein m is from 2 to about 16, and wherein the copolymer has a melting point Tm1, by solution blending or melt blending the first biodegradable polyhydroxyalkanoate with (b) a second crystallizable biodegradable polyhydroxyalkanoate homopolymer or copolymer, which comprises at least one randomly repeating monomer unit having the structure (IV) wherein R<3> is H, or C1 or C2 alkyl, and p is 1 or 2. The second biodegradable polyhydroxyalkanoate has a melting point Tm2, wherein Tm2 is at least about 20 DEG C greater than Tm1. Methods for forming shaped articles from the blending of components (a) and (b) are also disclosed. |
申请公布号 |
WO0250156(A2) |
申请公布日期 |
2002.06.27 |
申请号 |
WO2001US50461 |
申请日期 |
2001.12.20 |
申请人 |
THE PROCTER & GAMBLE COMPANY;AUTRAN, JEAN-PHILIPPE, MARIE, AUTRAN;MELIK, DAVID, HARRY;SATKOWSKI, MICHAEL, MATTHEW |
发明人 |
AUTRAN, JEAN-PHILIPPE, MARIE, AUTRAN;MELIK, DAVID, HARRY;SATKOWSKI, MICHAEL, MATTHEW |
分类号 |
C08J3/21;C08G63/88;C08L63/06;C08L67/04;C08L101/16 |
主分类号 |
C08J3/21 |
代理机构 |
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代理人 |
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地址 |
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