Table 3. Application of Solvent Extraction for Rubber Composites.

Rubber	Solvent	Extracted Substance	Reference
NR	acetone	accelerator	77
	sulfuric acid	hydroxylamine	78
SBR	acetone	HPPD, TMQ, paraffine	75
	acetonitrile	wax, OBTS	75, 81
	n-hexane	wax, process Oil	81
NBR	n-hexane	ZDBC, ZDE, DEHP, BHT	80
EPM	methylene chloride	hydrocarbons	79

OBTS: N-oxydoiethylene-2-benzothiazylsulfenamide, ZDBC: Zinc-di-n-butyldithiocarbomate, ZDEC: zinc diethyldithiocarbamate, DEHP: di(2-ethylhexyl) phthalate