Nonionic emulsifiers
AssigneeHenkel Kommanditgesellschaft auf Aktien
InventorsManfred Weuthen, Petra Riegels, Irmgard Hartel
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Abstract
A process for making nonionic emulsifiers involving the steps of: (a) performing an acid-catalyzed acetalization reaction on a mixture of (i) sugars or water-containing starch degradation products and (ii) primary alcohols in a molar ratio of (i):(ii) of from 1:2 to 1:8; (b) terminating the reaction at a conversion ranging from 60% to 90% of the theoretical to form a reaction product; (c) neutralizing the reaction product to form a neutralized reaction product; and (d) purifying the neutralized reaction product by back-mixing the product through at least one coarse filter until the product becomes clear.
Claims10
A process for making nonionic emulsifiers comprising:
- (a) performing an acid-catalyzed acetalization reaction on a mixture of (i) sugars or water-containing starch degradation products and (ii) primary alcohols in a molar ratio of (i):(ii) of from 1:2 to 1:8;
- (b) terminating said reaction at a conversion ranging from 60 to 90% of the theoretical to form a reaction product;
- (c) neutralizing said reaction product to form a neutralized reaction product;
- and
- (d) purifying said neutralized reaction product by back-mixing said product through at least one coarse filter until said product becomes clear.
Dependencies are inferred from the claim text.