A water repellant and oil repellant film composition including a siloxane compound represented by a specific formula or a cured product of the siloxane compound.

An organopolysiloxane cured film which can be made thin, has an extremely low number of defects on a surface and inside of the film, and exhibits high dielectric breakdown strength with regard to a load voltage is provided. Also provided are applications thereof and a method of manufacturing. The organopolysiloxane cured film has an average thickness within a range of 1 to 200 μm. In general, the number of surface defects is 0 to 1, and the number of internal defects is 0 to 20, when measuring the number of surface defects using optical means in an arbitrary position on the organopolysiloxane cured film with a unit area of 15 mm×15 mm. The organopolysiloxane cured film may be obtained by a rolling step in a clean room or the like, or may be obtained by curing between separators provided with a release layer.

To provide a siloxane polymer containing a silsesquioxane unit and a chain siloxane unit in the main chain and having a reactive group. A siloxane polymer containing a repeating unit represented by Formula (1):

##STR00001## R.sup.0's independently represent C.sub.6-20 aryl or C.sub.5-6 cycloalkyl; R.sup.1 independently represent a hydrogen atom, C.sub.6-20 aryl, C.sub.5-6 cycloalkyl, C.sub.7-40 arylalkyl, or C.sub.1-40 alkyl; R.sup.2, R.sup.4, and R.sup.6 independently represent C.sub.6-20 aryl, C.sub.5-6 cycloalkyl, C.sub.7-40 arylalkyl, or C.sub.1-40 alkyl; R.sup.3 represents a monovalent group having a reactive group; R.sup.5's independently represent C.sub.6-20 aryl, C.sub.5-6 cycloalkyl, C.sub.7-40 arylalkyl, C.sub.1-40 alkyl, or C.sub.1-20 alkoxy; y1, y2, and z are an integer of 0 to 30; g′ is 0 or 1; and, in the case of y1=y2=z=0, at least one terminal is the group represented by Formula (2).

A toner comprising a toner particle and an external additive, wherein the external additive comprises a composite particle comprising an organosilicon polymer fine particle covering a surface of an alumina particle, a coverage ratio of the surface of the alumina particle with the organosilicon polymer fine particle is 1 to 50 area %, and given A (nm) as a number-average particle diameter of primary particles of the organosilicon polymer fine particle and B (nm) as a number-average particle diameter of primary particles of the alumina particle, following formulae (I) and (II) are satisfied:
A≤90  (I)
100≤B≤1000  (II).

A wavelength converting includes a diffused-reflecting layer, a substrate, a photoluminescence layer, and a binder. The diffused-reflecting layer has a first surface and a second surface facing away from each other. The substrate is over the first surface of the diffused-reflecting layer. The photoluminescence layer is over the second surface of the diffused-reflecting layer. The binder is mixed at least in the photoluminescence layer or at least in the diffused-reflecting layer, the binder includes a structural unit represented by formula (1), and a characteristic absorption band in a Fourier-Transform Infrared (FTIR) Spectrum of silicon-oxygen-silicon bonds (Si—O—Si bonds) in the binder is from 900 cm.sup.−1 to 1250 cm.sup.−1,

##STR00001##

in which R represents an aromatic group.

Silicone heat transfer fluids having a narrow range of M:D units and a specified proportion of cyclic siloxanes are able to be used at heat transfer fluids at high temperatures without reaching a supercritical state.

A condensation-curable electrically conductive silicone adhesive composition, methods of making and using same, and manufactured articles and devices comprising or prepared from the same.

A damping-enhanced pressure-sensitive adhesive comprising a pressure-sensitive adhesive and a at least one damping additive. The pressure-sensitive adhesive comprises a silicone-based polymer and optionally, at least one catalyst and/or at least one initiator.

Thin films are provided comprising a damping adhesive comprising a polysiloxane or mixture of polysiloxanes and exhibiting a tan delta of at least 0.42 for every temperature between 20° C. and 250° C. and a tan delta at 250° C. that is no more than 0.20 greater than the minimum tan delta measured in the range of 20° C. to 250° C.; in some cases exhibiting a tan delta of at least 0.42 for every temperature between 20° C. and 200° C. and a tan delta at 200° C. that is no more than 0.08 greater than the minimum tan delta measured in the range of 20° C. to 200° C.; in some cases obtained by crosslinking polysiloxane(s) by e-beam or peroxide. Microspeaker diaphragm materials, subassemblies and transfer tapes comprising such films are also provided.

A method for producing a converter element, a converter element and a light emitting device are disclosed. In an embodiment a converter element includes a cured layer having at least one phosphor and a cured polysiloxane powder, wherein the phosphor and the cured polysiloxane powder are embedded in a matrix material comprising a cured polysiloxane resin.