发明名称 |
BIODEGRADABLE POLYACTIC ACID FOR USE IN NONWOVEN WEBS |
摘要 |
A method for forming a biodegradable polylactic acid suitable for use in fibers is provided. In one embodiment, for example, a polylactic acid is melt blended with an alcohol to initiate an alcoholysis reaction that results in a polylactic acid having one or more hydroxyalkyl or alkyl terminal groups. By selectively controlling the alcoholysis conditions (e.g., alcohol and polymer concentrations, catalysts, temperature, etc.), a modified polylactic acid may be achieved that has a molecular weight lower than the starting polylactic acid. Such lower molecular weight polymers also have the combination of a higher melt flow index and lower apparent viscosity, which is useful in a wide variety of fiber forming applications, such as in the meltblowing of nonwoven webs. |
申请公布号 |
WO2008008074(A1) |
申请公布日期 |
2008.01.17 |
申请号 |
WO2006US27562 |
申请日期 |
2006.07.14 |
申请人 |
KIMBERLY-CLARK WORLDWIDE, INC.;HE, AIMIN;WANG, JAMES, H. |
发明人 |
HE, AIMIN;WANG, JAMES, H. |
分类号 |
C08G63/08;B32B5/26;C08G63/88;D04H1/435 |
主分类号 |
C08G63/08 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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