What is EXTENDER?

1 A substance added to paint as an adulterant or to give it body, eg barytes, china clay, French chalk, gypsum, whiting. 2 In synthetic resin adhesives, a substance eg rye flour added to reduce the cost of gluing or to adjust viscosity. 3 A non-compatible plasticizer used as an additive to increase the effectiveness of the compatible plasticizer in the manufacture of elastomers. 4 Low molecular mass substance which may be used to replace plasticizer, esp in polyvinyl chloride compounds. See panel on Polyvinyl chloride,


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