PROCESSING LINE, METHOD OF PREPARING MODIFIED LIGNOSULPHONATES AND BINDER BASED ON SAID LIGNOSULPHONATES FOR MOULDING AND CORE MIXTURES IN CASTING METALS Russian patent published in 2009 - IPC B22C1/20

Abstract RU 2375143 C2

FIELD: chemistry.

SUBSTANCE: invention relates to foundry engineering. Lignosulphonates are obtained in a container for modifying by evaporating bisufite liquor after boiling cellulose on a magnesium-sodium base and reaction with oxyethylated monoalkylphenol based on propylene trimmers (isononyl) of formula C₉H₁₉C₆H₄O(C₂H₄)nH. Stirring is continued for 1.5 to 2 hours at temperature of the components not below 30°C. Lignosulphonates are used to obtain a binder which contains the following, in wt %: liquid technical lignosulphonates 99 to 99.7, modifier 0.3 to 1.0.

EFFECT: simplification of method of producing a binder for moulding and core mixtures with given technical characteristics.

3 cl, 1 dwg, 4 tbl

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RU 2 375 143 C2

Authors

Seravin Vitalij Vital'Evich

Dedik Jurij Prokop'Evich

Dates

2009-12-10—Published

2008-01-09—Filed