Title:
METHOD OF PRODUCING POWDERED HYDROXYALKYL STARCH ETHERS FOR USE AS SPRAY ADJUVANT
Document Type and Number:
WIPO Patent Application WO2000073350
Kind Code:
A3
Abstract:
The invention relates to a method of producing powdered hydroxyalkyl starch ethers with hydroxyl numbers of between 350 and 600 and molar substitution rates of 1 to 2, by alkoxylation of alkalized carbohydrates with a propylene-ethylene oxide mixture. The products prepared according to said method are especially suitable for use as spray adjuvants. The above method is carried out in the presence of preferably alkaline catalysts. The total quantity of a C3-/C4-alkylene oxide component, preferably propylene oxide, required for reaction with the starch is reacted together with between 10 and 60 % by weight, in relation to the total alkene oxide quantity, ethylene oxide at temperatures of between 40 and 80 DEG C.
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| JPH0491068 | POLYOL DERIVATIVE |
Inventors:
MEERBOTE MICHAEL (DE)
MOSINSKI HOLGER (DE)
DECKER URSULA (DE)
MOSINSKI HOLGER (DE)
DECKER URSULA (DE)
Application Number:
PCT/DE2000/001518
Publication Date:
October 03, 2002
Filing Date:
May 13, 2000
Export Citation:
Assignee:
BUNA SOW LEUNA OLEFINVERB GMBH (DE)
MEERBOTE MICHAEL (DE)
MOSINSKI HOLGER (DE)
DECKER URSULA (DE)
MEERBOTE MICHAEL (DE)
MOSINSKI HOLGER (DE)
DECKER URSULA (DE)
International Classes:
C08B31/12; (IPC1-7): C08B31/12
Foreign References:
| DE1019288B | 1957-11-14 | |||
| US4585858A | 1986-04-29 |
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