A curable composition including a perfluoro(poly)ether group-containing silane compound having two or more Si atoms each bonding to at least one selected from a hydroxyl and hydrolyzable group, and a group represented by: —(OC.sub.6F.sub.12).sub.a—(OC.sub.5F.sub.10).sub.b—(OC.sub.4F.sub.8).sub.c—(OC.sub.3X.sup.10.sub.6).sub.d—(OC.sub.2F.sub.4).sub.e—(OCF.sub.2).sub.f—, wherein a, b, c and d are each independently an integer of 0 to 30, e and f are each independently an integer of 1 to 200, the sum of a, b, c, d, e and f is 5 or more, the occurrence order of the respective repeating units with the subscript a, b, c, d, e or f is not limited, a ratio of e to f is 1.0 or more, and each X.sup.10 is independently a hydrogen, fluorine or chlorine atom; an organosilicon compound having at least two —O—R.sup.g3(s) each bonding to a Si atom, wherein each R.sup.g3, at each occurrence, is independently a hydrogen atom or a monovalent organic group; and a catalyst.

Compositions that are curable by free radical redox reactions are disclosed. Free radical curing reactions between polythiols and polyalkyenyls are initiated by the reaction of metal complexes and organic peroxides. The compositions are useful as sealants.

A polymerizable composition is described comprising a fluorinated monomer, oligomer, or mixture thereof; and a coupling agent comprising a (meth)acryl terminal group, a terminal silane comprising hydrolysable groups and a perfluorooxyalkylene or perfluorooxyalkyl moiety. Also described are compounds and methods.

An object of an aspect of the present invention is to provide: a lubricant excellent in adsorbability on the surface of a magnetic disk and in contamination resistance; and a magnetic disk which uses the lubricant and which is excellent in durability. The lubricant in accordance with an aspect of the present invention contains a fluoropolyether compound having, at a terminal thereof, a hydroxyalkenyl group or a hydroxyalkynyl group.

To provide a fluorinated ether compound, a fluorinated ether composition and a coating liquid that are able to form a surface layer which is excellent in water/oil repellency, abrasion resistance, fingerprint stain removability, lubricity and outer appearance, and an article having such a surface layer. A fluorinated ether compound represented by A.sup.1-O—(R.sup.f1O).sub.m1-Q.sup.1-[C(O)N(R.sup.1)].sub.p1—R.sup.11—C[—R.sup.12—SiR.sup.13.sub.n1X.sup.1.sub.3-n1].sub.3, wherein A.sup.1 is a C.sub.1-20 perfluoroalkyl group; R.sup.f1 is a fluoroalkylene group having no branched structure; m1 is an integer from 2 to 210; Q.sup.1 is a single bond or a fluoroalkylene group having no branched structure; R.sup.1 is a hydrogen atom, etc.; p1 is 0 or 1; R.sup.11 is a single bond, an alkylene group, etc.; R.sup.12 is an alkylene group, etc.; R.sup.13 is a monovalent hydrocarbon group, etc.; X.sup.1 is a hydrolyzable group; and n1 is an integer of from 0 to 2.

This invention provides a polymer, which is preferably a polyether polymer. The polymer may be uses in coating compositions. Containers and other articles comprising the polymer and methods of making such containers and other articles are also provided. The invention further provides compositions including the polymer (e.g., powder coatings), which have utility in a variety of coating end uses, including, for example, valve and pipe coatings.

Provided are a curable composition and an application thereof. The curable composition contains: a compound A having a polymerizable group (a) and an oxyfluoroalkylene group; a polymerization initiator; and a compound B having a polymerizable group different from the polymerizable group (a). The polymerizable group (a) in the compound A is at least one selected from the group consisting of a vinylphenyl group, a vinylphenyloxy group, a vinylbenzyloxy group, a vinyloxy group, a vinyloxycarbonyl group, a vinylamino group, a vinylaminocarbonyl group, a vinylthio group, an allyloxy group, an allyloxycarbonyl group, an allylamino group, an allylaminocarbonyl group, an allylthio group, an epoxy group, and an epoxycycloalkyl group.

A polymer [polymer (P)] comprising a plurality of (per)fluoropolyether (PFPE) segments [segments (S.sup.RF)] joined together by hydrogenated (poly)ether segments [segments (S.sup.H)], said polymers (P) having two end groups [groups (E)], each group (E) comprising a hydroxy or a leaving group, with the proviso that the hydrogenated (polytether segment (S.sup.H) is not a segment of formula —CH.sub.2OCH.sub.2 2 OCH.sub.2— is herein disclosed. Disclosed is also a method for the manufacture of polymer (P) and a polymer obtainable by full or partial fluorination of polymer (P). Polymer (P) and polymers obtainable therefrom by full or partial fluorination can be conveniently used in the manufacture of lubricant compositions or of compositions for imparting hydro-/oleo-repellence to substrates. Said polymers can also be used as intermediates for the manufacture of other polymers or block copolymers.

A water/oil repellent treatment agent which includes a specific polymer-modified silane having a fluorooxyalkylene structure on the main chain and a hydrolyzable group at the end of the molecular chain, and/or a partial (co)hydrolyzate/condensate thereof, has a percent weight loss following one hour of exposure at 250° C. of 10% or less. The treatment forms a layer having excellent water and oil repellency, scuff resistance and mold release properties even when heated to 250° C. or more.

A high temperature low outgas thermal interface material is provided. The thermal interface material includes a plurality of heat conducting particles dispersed within a fluorine containing fluid such as perfluoropolyether. The high temperature low outgas thermal interface material provides thermal conductivity between a heat source and a heat sink at temperatures greater than 200° C.