Provided is a black coupling member for vehicles, comprising a trivalent chromium black chemical conversion film and a black coating film upon the trivalent chromium black chemical conversion film, on the surface of a zinc-plated metal substrate. The trivalent chromium black chemical conversion film is formed using a hexavalent chromium-free trivalent chromium black chemical conversion treatment solution having a Zn ion concentration of no more than 20 g/L. The lightness (L) of the trivalent chromium black chemical conversion film is no more than 33. The black coating film includes a black chemical conversion component, a modified organopolysiloxane, and a friction coefficient-adjustment component. The black chemical conversion component content is 2-25 wt % relative to 100 wt % of the black coating film. The lightness (L) is no more than 28.

A defoamer composition based on organofunctionally modified polysiloxanes contains one or more laterally polyether-modified polysiloxanes as component A and at least one terminally polyether-modified polysiloxane as component B.

A defoamer composition based on organofunctionally modified polysiloxanes contains one or more laterally polyether-modified polysiloxanes as component A and at least one terminally polyether-modified polysiloxane as component B.

Described herein is a method of refurbishing an intermediate transfer member (ITM) blanket comprising: cleaning a silicone release layer of the ITM blanket with a cleaning composition; applying a primer composition onto the silicone release layer of the ITM blanket to form a primer layer; applying a silicone release formulation to the primer layer; curing the silicone release formulation to form a silicone release layer; wherein at least one of the cleaning composition and the primer composition comprises a polysiloxane surfactant.

Described herein is a method of refurbishing an intermediate transfer member (ITM) blanket comprising: cleaning a silicone release layer of the ITM blanket with a cleaning composition; applying a primer composition onto the silicone release layer of the ITM blanket to form a primer layer; applying a silicone release formulation to the primer layer; curing the silicone release formulation to form a silicone release layer; wherein at least one of the cleaning composition and the primer composition comprises a polysiloxane surfactant.

The present invention relates to aqueous polymer-silicon oil hybrid compositions in the form of aqueous dispersions of finely divided polymer-silicon oil hybrid particles which comprise at least one water-insoluble polymer P made of ethylenically unsaturated monomers M, at least one surface-active substance and at least non-polymerizable, non-polar silicon oil. The present invention relates in particular to the use of these compositions as additives in aqueous coating and printing ink compositions.

The present invention relates to aqueous polymer-silicon oil hybrid compositions in the form of aqueous dispersions of finely divided polymer-silicon oil hybrid particles which comprise at least one water-insoluble polymer P made of ethylenically unsaturated monomers M, at least one surface-active substance and at least non-polymerizable, non-polar silicon oil. The present invention relates in particular to the use of these compositions as additives in aqueous coating and printing ink compositions.

The invention relates to polysiloxanes which can be obtained by adding at least one monovinyl functional polysiloxane and at least one epoxy functional, monovinyl functional component to a Si—H functional polysiloxane. The invention also relates to the production of polysiloxanes, to compositions containing said polysiloxanes, to the use of the compositions in a coating method and to substrates coated with the composition and to the use of the polysiloxanes as additives for finishing surfaces of hardened compositions with anti-adhesive properties.

A surface treatment agent or a powder treatment agent comprising a co-modified organopolysiloxane is disclosed. The co-modified organopolysiloxane is represented by the general formula: R.sup.1.sub.aR.sup.2.sub.bQ.sub.cSiO.sub.(4−a−b−c)/2. The co-modified organopolysiloxane has a number average molecular weight of less than 4500 and includes a long-chain alkyl group and a polyoxyalkylene group in the molecule.

A surface treatment agent or a powder treatment agent comprising a co-modified organopolysiloxane is disclosed. The co-modified organopolysiloxane is represented by the general formula: R.sup.1.sub.aR.sup.2.sub.bQ.sub.cSiO.sub.(4−a−b−c)/2. The co-modified organopolysiloxane has a number average molecular weight of less than 4500 and includes a long-chain alkyl group and a polyoxyalkylene group in the molecule.