Global Patent Index - EP 1056782 A1

EP 1056782 A1 20001206 - METHOD FOR PRODUCING PRECIPITATED STARCH ESTERS

Title (en)

METHOD FOR PRODUCING PRECIPITATED STARCH ESTERS

Title (de)

VERFAHREN ZUR HERSTELLUNG VON GEFÄLLTEN STÄRKEESTERN

Title (fr)

PROCEDE DE PREPARATION D'ESTERS D'AMIDON PRECIPITES

Publication

EP 1056782 A1 20001206 (DE)

Application

EP 99967879 A 19991210

Priority

  • DE 9903943 W 19991210
  • DE 19857995 A 19981216

Abstract (en)

[origin: DE19857995A1] The invention relates to a cost-effective method for producing precipitated starch esters consisting of carboxylic reaction solutions. The starch esters obtained by the inventive method are particularly suitable for producing dry blends or for further processing in the form of a dispersion by virtue of the large surface of the starch ester particles. The method is characterised in that the main portion of the carboxylic acid is reduced to a radical carboxylic acid content greater than 0.5 percent by weight carboxylic acidic esters reaction mixtures in a predrying step and in that a dispersion of the acidic ester particles is produced by means of subsequent water treatment or processing with C1 to C4 alcohol. Said dispersion contains only small amounts of carboxylic acid. Fine, porous starch ester particles with a large surface and good processing properties are obtained by separating, washing and drying said dispersion.

IPC 1-7

C08B 31/04

IPC 8 full level

C08B 31/04 (2006.01); C08B 37/00 (2006.01)

CPC (source: EP)

C08B 31/04 (2013.01); C08B 37/0003 (2013.01)

Citation (search report)

See references of WO 0035958A1

Designated contracting state (EPC)

AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE

DOCDB simple family (publication)

DE 19857995 A1 20000621; EP 1056782 A1 20001206; WO 0035958 A1 20000622

DOCDB simple family (application)

DE 19857995 A 19981216; DE 9903943 W 19991210; EP 99967879 A 19991210