摘要:
The present invention relates to a manufacturing method of a silicone rubber particle-dispersed emulsion which does not cause an environmental problem attributable to a conventional organic surfactant component, does not decrease dispersion stability in the emulsion, and does not adversely affect the intrinsic characteristics of silicone.
摘要:
Silicone room temperature curable sealant/adhesive compositions, in particular such compositions which (upon several hours of contact with water) do not repel water, but rather retain and pick-up water and/or can be wetted by aqueous materials subsequent to exposure.
摘要:
Defoamer compositions contain a) a two-stage hydrosilylation product of one or more (a) or (b) starting materials with a hydrosilylatable composition containing α-methylstyrene, and then with a linear or branched organopolysiloxane bearing at least two hydrosilylatable groups; b) a silicone resin; and c) silica. The defoamers are particularly useful in machine laundering and dishwashing compositions.
摘要:
The invention provides an actinically-polymerizable amphiphilic polysiloxane which comprises a polysiloxane polymer chain comprising a polylsiloxane segments comprising at least one siloxane unit having a low molecular weight hydrophilic polymer chain connected with a silicone atom of the siloxane unit, and (meth)acrylamido groups each covalently bonded to one of the ends of the polysiloxane polymer chain and/or to the end of one of low molecular weight hydrophilic polymer chains each connected with one silicone atom. The present invention is also related to a polymer, an actinically-crosslinkable silicone-containing prepolymer, a silicone hydrogel polymeric material, or a silicone hydrogel contact lens, which comprises repeating units derived from an actinically-polymerizable amphiphilic polysiloxane of the invention. In addition, the invention provides a method for making silicone hydrogel contact lenses using a water-based lens-forming formulation comprising an actinically-polymerizable amphiphilic polysiloxane of the invention.
摘要:
A cross-linked composition comprises the reaction product of a first reactant having at least one hydroxyl or amine (functional) group, a second reactant having at least one hydroxyl or amine (functional) group, and a siloxane having at least two terminal anhydride groups reactive with the functional groups of the first and second reactants. The first reactant is selected from the group of first siloxanes having at least one hydroxyl or amine group, a first organic alcohol having at least one hydroxyl group, a first organic amine having at least one amine group, or combinations thereof. The second reactant is selected from the group of second siloxanes having at least one hydroxyl or amine group, a second organic alcohol having at least one hydroxyl group, a second organic amine having at least one amine group, or combinations thereof. If utilized, the first siloxanes and/or second siloxanes are different from the siloxane.