Nanjing SiSiB Silicones Co., Ltd.
Nanjing SiSiB Silicones Co., Ltd.
SiSiB® PC9401
SiSiB® PC9401

Tetramethyldivinyldisiloxane

SiSiB® PC9401 is a high purity 1,3-Divinyl Tetramethyl Disiloxane, it is a colorless to yellowish clear liquid.


SiSiB® PC9401

Technical Data


CAS No.

2627-95-4

EINECS No.

220-099-6

Formula

C8H18OSi2

Molecular Weight

186.40

Boiling Point

139°C [760mmHg]

Flash Point

24°C



Color and Appearance

Colorless transparent liquid

Density 25/25°C

0.818

Refractive Index

1.412 [20°C]

Min.Purity

99%


Application


  • SiSiB® PC9401 is primarily used as an end-capper in the production of vinyl end-capped siloxane polymers. The vinyl end-capped silicone polymers can be used in a wide variety of end use applications such as silicone rubber, sealants, coatings and cosmetics.


  • SiSiB® PC9401 is used as a linear inhibitor in the formulating of two-part Silicone RTV-2 Addition Curing systems.


  • Because of the large vinyl content, small amounts are very effective in retarding and controlling the working time or pot life of two-part Addition-Curing RTV rubber silicones.


  • Also, due to its boiling point of 139ºC, it is easily volatilized during curing. A suggested starting formulation is to use 0.25 to 0.50 parts by weight of SiSiB® PC9401 with 100 parts of the Base polymer containing the platinum catalyst.


Packing and Storage



  • In the unopened original container SiSiB® PC9401 has a shelf life of one year in a dry and cool place.


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SiSiB® PC9401