7 results about "Addition polymer" patented technology

To provide a toner for electrostatic image development that offers excellent resistance to hot offset and durability. [Solution] A toner for developing electrostatic images, comprising toner particles containing a binder resin and a release agent, The amorphous composite resin A comprises a polyester resin segment which is a polycondensate of an alcohol component and a carboxylic acid component, and a polymethacrylate ester resin segment which is an addition polymer of raw material monomers containing a methacrylate ester. A toner for developing electrostatic images, wherein the release agent contains ester wax.

High solids curable film-forming compositions and coating kits are provided, comprising: (a) a polyisocyanate curing agent; and (b) a film-forming component comprising at least one of (i) a secondary-hydroxyl functional (meth)acrylic polyol having pendant ester functional groups and a weight average molecular weight of 4000 to 8000; and (ii) a reactive constituent comprising: (1) a polymeric polyol comprising a polyester polyol and / or an addition polymer that is different from (i); and (2) an organic medium comprising a hydrophobic and / or sterically hindered reactive diluent having hydroxyl functional groups. Alternatively, the film-forming component (b) comprises the secondary-hydroxyl functional (meth)acrylic polyol (i) and optionally at least one of (1) and (2) above. The (meth)acrylic polyol comprises 20 to 35 percent by weight residues of an epoxy functional ethylenically unsaturated monomer. Methods of improving appearance of an effect pigment-containing coating layer on a substrate are also provided.

A series of palladium compounds as described herein are found to be superior vinyl addition polymerization catalysts. Specifically the compounds of formulae (I) and (II) as described herein surprisingly exhibit much higher reactivity than the compounds known in the art in the vinyl addition polymerization of a variety of cyclo-olefinic monomers, and thus polymers of very high molecular weight can be formed. Also disclosed are the formation of a variety of solid three dimensional objects, such as for example, solution extrusion of the polymer solutions formed from the vinyl addition polymerization of a variety of cyclic-olefinic monomers utilizing very low levels of palladium compounds of formulae (I) or (II) as described herein. The polymer films formed from the polymerization composition exhibit hitherto unattainable properties, for example superior transparent properties, higher thermal and mechanical properties, among other improved properties. Accordingly, the films thus formed are useful in a variety of opto-electronic applications.

The invention provides a liquid crystal aligning agent, a liquid crystal aligning film, a liquid crystal element and a manufacturing method thereof. The liquid crystal aligning agent can realize low-voltage driving of the liquid crystal element, can form a liquid crystal aligning film with excellent sealing performance and is excellent in coating performance. A liquid crystal aligning agent contains an addition polymer [P] containing: a structural unit [A] having a hydroxyl group bonded to a carbon atom in a chain structure or in an aliphatic ring (excluding a carbon atom in a carbonyl group and a carbon atom constituting a main chain of the polymer); and a structural unit [B] which has a partial structure represented by formula (1) and is different from the structural unit [A].

One object of the present invention is to provide a cyclic olefin copolymer with several glass transition temperatures and good toughness, as well as a method for producing the cyclic olefin copolymer. The present invention relates to a cyclic olefin copolymer, which is an addition polymer of a norbornene monomer and an α-olefin having 3 to 20 carbon atoms, wherein the number of moles of a structural unit derived from the α-olefin, based on the number of moles of all structural units of the cyclic olefin copolymer, is 10 to 90 mol%, the cyclic olefin copolymer has a number-average molecular weight of more than 200,000 to 500,000, and the cyclic olefin copolymer has two or more glass transition temperatures in a range of 0 to 350 °C, which are determined by viscoelastic measurement.

The invention belongs to the technical field of glass fiber impregnating compounds, and particularly relates to a polymer, a glass fiber impregnating compound, an electronic-grade glass fiber and a preparation method and application thereof. According to the invention, the amine-acrylate Michael addition polymer is designed and synthesized, acrylate comprises an EO chain segment, and is subsequently grafted with long-chain alkyl / cardanol epoxy and an epoxy group-containing silane coupling agent, and a starch film-forming agent is used as a film-forming component of an impregnating compound; wherein the epoxy silane coupling agent plays a role of a bridge between the organic film-forming component and the glass fiber to chemically connect the organic film-forming component and the glass fiber, and then secondary amino groups which are not completely reacted and epoxidized soybean oil are subjected to a cross-linking reaction at a high temperature to form a film; and electronic-grade glass fibers with low yarn dropping amount, low migration amount and high yield can be obtained when the glass fiber wetting agent is used for glass fiber wetting treatment.

The present invention addresses the problem of providing: a cyclic olefin copolymer having a plurality of glass transition temperatures and good toughness; and a method for producing the cyclic olefin copolymer. Provided is a cyclic olefin copolymer which is an addition-type polymer of a norbornene monomer and an alpha-olefin having 3-20 carbon atoms, and which is characterized in that: the ratio of the number of moles of constituent units derived from the alpha-olefin to the number of moles of all constituent units in the cyclic olefin copolymer is 10-90 mol%; the number average molecular weight of the cyclic olefin copolymer is more than 200,000 and 500,000 or less, and the cyclic olefin copolymer has two or more glass transition temperatures in the range of 0-350 DEG C as determined by viscoelasticity measurement.