Vinyl Siloxane Polymer

The materials are completely amorphous with glass transition temperatures between 60 and 86 c.

Vinyl siloxane polymer.

Siloxane based elastomers have found widespread use as sealants 1 for encapsulation and packaging of elec tronic components 2 in medicine 3 and. Vinyl modified polymer vqm 135 abcr germany were worked into the vinyl component prior to mixing in the hydrosilane component. A siloxane is a functional group in organosilicon chemistry with the si o si linkage. The parent siloxanes include the oligomeric and polymeric hydrides with the formulae h osih 2 n oh and osih 2 n.

Polyvinyl siloxane pvs also called poly vinyl siloxane vinyl polysiloxane vps or vinylpolysiloxane is an addition reaction silicone elastomer an addition silicone. 29si nmr spectroscopy indicates that the polymers possess an exactly alternating microstructure of the silphenylene and siloxane moieties. Vinyl siloxane monomers have comparable reactivities to monomers such as vinyl acetate vinyl chloride and perfluorovinyl chloride but are less reactive than acrylonitrile styrene and n vinylpyrrolidone. It has been found that the addition of a carborane within a siloxane polymer significantly increases the thermal stability of such siloxane polymers 33 hybrids of organic and inorganic components made from 1 7 bis chlorotetramethyldisiloxy m carborane 1 3 dichlorotetramethyldisiloxane and 1 4.

The synthesis of a series of vinyl substituted silphenylene siloxane polymers of high molecular weight is described. The structure of the vinyl siloxane does not appreciably affect the total rate of copolymerization or its reactivity toward a given organic vinyl monomer. All polymers degrade thermally only. Polymers containing boron within the polymer are high temperature oxidatively stable materials.

It is a viscous liquid that cures solidifies quickly into a rubber like solid taking the shape of whatever surface it was lying against while curing. Find sigma aldrich 433004 msds related peer reviewed papers technical documents similar products more at sigma aldrich. The synthesis of a series of vinyl substituted silphenylene siloxane polymers of high molecular weight is described.