摘要:
Aminoalkylated lignin cross-linked with polyoxyalkylene linkages is described. The composition is prepared by reacting lignin with a secondary amine and an aldehyde and cross-linking the resulting aminoalkylated lignin with polyoxyalkylene linkages to obtain effective flocculating agents.
摘要:
A PROCESS FOR THE ACYLATION OF LIGNOSULFONATE BY THE REACTION, IN AN ORGANIC SOLVENT, OF A TRIALKYLAMMONIUM LIGNOSULFONATE SALT WITH A HALIDE OF CARBOXYLIC OR SULFONIC ACID AND PRODUCTS THEREOF.
摘要:
An adhesive resin composition prepared by pre-reacting lignosulfonate with phenol under alkaline conditions and subsequently reacting the lignosulfonate-phenol product with formaldehyde under alkaline conditions.
摘要:
AN ADHESIVE RESIN COPOSITION PREPARED BY PRETREACTING LIQNOSULFONATE WITH PHENOL UNDER ALKALINE CONDITIONS AND SUBSEQUENTLY REACTING THE LIGNOSULFONATE-PHENOL PRODUCT WITH FORMALDEHYDR UNDER ALKALINE CONDITIONS.