Product name: rubber anti-scorching agent PVI

CAS NO : 17796-82-6

Chemical Name : N-(cyclohexylthio)Phthalimide

ITEM	unit	PVI Crystalline powder	PVI Oiled powder	PVI Granule	PVI Powder with Butyl Oleate	PVI 80
Appearance		White or yellowish	White or  yellowish	White	White or yellowish	White
Purity	%	≥97	≥96	≥97	≥96	≥77
Melting point	℃	90-94	90-94	90-94	90-94	88-94
Heat loss	%	≤0.3	≤0.3	≤0.3	≤0.3	≤0.3
Ash	%	≤0.1	≤0.1	≤0.1	≤0.1	≤0.1
Toluene insoluble	%	≤0.5	≤0.5	≤0.5	≤0.5	≤3.0
oil	%	--	1.0-1.5	--	--	--
wax	%	--	--	--	--	17-21
Butyl oleate	%	--	--	--	1.0-1.5	--

Properties:

      PVI dissolves in acetone , benzene , toluene, ethyl ether , ethyl acetate as well as warm carbon tetra chloride, ethyl alcohol and heptane: It slightly dissolves in gasoline ,but insoluble in kerosene.

Usage ;
    It is high effective pre-vulcanization inhibitor. It is applied in natural or synthetic rubber , NR, SBR,ER,CR,EPM,EPDM,NBR with cure system consisting of sulfur and Thiazole but mainly Sulphennamide Accelerator.

PVI can effectively prevent the rubber materials from scorching during processing , it makes it possible for extrude and calendar to run at high temperature and high speed , and improves capacity of the vulcanizer . The product can also improve the storage stability of the rubber materials and keep them from natural vulcanization during storage . Meanwhile, it has reclaimaion function for rubber materials that have been borne at high temperature or dangerous for scorching .