An object of the present invention is to prevent an occurrence of flow-mark molding defects to improve an appearance of molded articles, and as a means for achieving the object, a propylene-based block copolymer is used as an appearance improver, the copolymer comprising 80 to 60% by weight of crystalline propylene polymer portion which has an intrinsic viscosity []p of 0.90 dL/g or less and 20 to 40% by weight of propylene/ethylene random copolymer portion which has an ethylene content of 35 to 50% by weight and an intrinsic viscosity []c of 7.0 dL/g or higher ([]c/[]p being 7.5 to 30), in which the propylene-based block copolymer has a MFR of 10 to 50 g/10 min.

This invention describes the preparation and characterization of cross-linkable fluoropolymers, These cross-linkable fluoropolymers contain keto functional monomer. The keto functional monomer is incorporated on fluoropolymer while crosslinking agent was post-added after polymerization. The cross-linking reaction occurs after water/solvent evaporation or during melt processing.

A heterogeneous catalyst for selectively hydrogenating a copolymer is provided, which includes a porous support, a metal oxide wrapping a part of the surface of the porous support, and a plurality of palladium particles on the porous support and the metal oxide. A method for selectively hydrogenating a copolymer is also provided, which includes contacting a heterogeneous catalyst to a copolymer to process hydrogenation. The copolymer includes aromatic rings and nonaromatic double bonds, and the nonaromatic double bonds are hydrogenated, and the aromatic rings are substantially not hydrogenated. The heterogeneous catalyst includes a porous support, a metal oxide wrapping a part of the surface of the porous support, and a plurality of palladium particles formed on the porous support and the metal oxide.

A method for producing a resin composition is disclosed. The method for producing a resin composition includes: obtaining a polyimide resin by reacting a tetracarboxylic dianhydride with a polyamine in an organic solvent; and obtaining a resin composition containing a polymaleimide resin and the organic solvent by reacting the polyimide resin with maleic anhydride. The polyamine contains dimer diamine. The organic solvent contains 1,2,4-trimethylbenzene.

Provided is a resin, a resin composition containing the resin, a cured product, a prepreg, a metal foil-clad laminate, a resin composite sheet, a printed wiring board, and a semiconductor device. Provided is a resin represented by Formula (T), wherein a parameter indicating a proportion of a structural unit having an indane skeleton is 0.55 or more and 1.00 or less, and a parameter indicating a proportion of a terminal double bond is 0.20 or more and 3.00 or less. In Formula (T), R is a group containing structural units represented by Formula (Tx).

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Disclosed herein are amine containing polymer compositions based on anionic polymerization of monomer compositions including an amine-derivatized alpha-methyl styrene (ADAMS) monomer according to structure (I) and/or an aminated conjugated aliphatic methylated polyene (ACAMP) monomer according to structure (II):

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with k, R, R.sub.1, R.sub.2, R.sub.3, and R.sub.4 defined herein. Also provided are amine containing polymer compositions based on anionic polymerization of difunctional monomers of these types with two polymerizable loci and/or two amine loci. Further disclosed herein are methods for using such polymer compositions.

A polymerizable composition for an optical material includes: an allyl carbonate compound (A) including two or more allyloxycarbonyl groups at a terminal which is represented by General Formula (1); and a radical polymerization initiator (B). The radical polymerization initiator (B) includes at least one kind of radical polymerization initiator (B1) which is a peroxyester-based radical polymerization initiator, and a radical polymerization initiator (B2). ##STR00001##

Aspects of the invention include a method for synthesizing a peptide brush polymer, the method comprising: exposing a mixture comprising peptide-containing monomers, one or more photoinitiators, and one or more chain transfer agents to a light sufficient to induce photopolymerization, and photopolymerizing the peptide-containing monomers in the mixture; wherein: the resulting peptide brush polymer comprises at least one peptide-containing polymer block; the at least one peptide-containing polymer block is characterized by a degree of polymerization of at least 10 and a peptide graft density of 50% to 100%; and at least one peptide moiety of the at least one peptide-containing polymer block has 5 or more amino acid groups.