发明名称 |
Procedure for the manufacture of a mixture of starch and polyvinyl alcohol and thus manufactured mixture |
摘要 |
50 to 95 parts by weight starch and 5 to 50 parts by weight polyvinyl alcohol with a degree of saponification between 87 and 100% are thoroughly mixed and furthermore the moisture content of the mixture is regulated between 10 and 25 weight %. Subsequently the mixture obtained is subjected to a thermo-mechanical treatment at a temperature situated between 110 DEG and 180 DEG C. During the extrusion the mixture is subjected to shearing forces so that the product obtained when it is dispersed in cold water and subsequently is centrifuged, divides into a watery phase and a coacervate phase without a sediment of undissolved polyvinyl alcohol being formed.
|
申请公布号 |
US5032337(A) |
申请公布日期 |
1991.07.16 |
申请号 |
US19890447847 |
申请日期 |
1989.12.08 |
申请人 |
AMYLUM, NAAMLOZE VENNOOTSCHAP |
发明人 |
NACHTERGAELE, WILLY A. M.;VAN NUFFEL, JAN H. |
分类号 |
C08J3/00;C08J3/05;C08L3/00;C08L3/02;C08L3/08;C08L29/04;D21H17/28;D21H17/36;D21H19/54 |
主分类号 |
C08J3/00 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|