Abstract: The invention relates to a process to produce irradiated polypropylene granulate wherein granulate comprising 1. a propylene polymer and 2. a vitamin E comprising stabilizer package is irradiated by electron beam radiation.

Abstract: A fluorene-based photoinitiator, a preparation method thereof, a photocurable composition having the same, and use thereof in the field of photocuring are disclosed. In some embodiments, the fluorene-based photoinitiator has a structure represented by Formula I, wherein X is -A-(X?)n, wherein A is selected from a heteroatom which is selected from O, N, or S, X? is selected from a C1-C20 linear alkyl group, a C1-C20 branched alkyl group, a C3-C8 cycloalkyl group, a C1-C10 alkyl group substituted with a C3-C8 cycloalkyl group or one or more of carbon atoms in X? are substituted with a heteroatom, and n is 1 or 2; and R4 is a hydroxy group or a N-morpholinyl group. In some embodiments, the fluorene-based photoinitiator comprises a structure represented by Formula II.

Abstract: A radical-curable adhesive composition containing a rubber (a) having one or more (meth)acryloyl groups within a single molecular chain, a polymerizable monomer (b) having both an epoxy group and a (meth)acryloyloxy group in the molecule, and a radical polymerization initiator (c). The rubber (a) is preferably a polymer of a monomer containing at least acrylonitrile.

Abstract: A method of increasing a polymerization reaction rate of a base monomer composition that has slow free-radical polymerization kinetics. The method comprises combining an effective amount of a nanogel to the base monomer composition to form a monomer-nanogel mixture having a polymerization reaction rate that is greater than the polymerization reaction rate of the base monomer composition when subjected to an identical free-radical polymerization reaction conducted under identical conditions. The base monomer composition comprises one or more slow-kinetic monomers with slow free radical polymerization kinetics in which <25% of the double bonds are converted within the first 10 mintes of said reaction. The nanogel is soluble in the base monomer composition. The nanogel is derived from a nanogel-forming monomer mixture that comprises: at least one monovinyl monomer; at least one divinyl monomer; a chain transfer agent; and an initiator.

Abstract: Some variations provide a preceramic resin precursor formulation comprising: first molecules comprising at least one Si—C bond and/or at least one Si—N bond, wherein the first molecules include at least one silyl hydride group (Si—H) available for hydrosilylation; and second molecules with at least one unsaturated carbon-carbon bond attached to a UV-active functional group. The first molecules and second molecules may be reacted, via hydrosilylation with a homogeneous or heterogeneous metal-containing catalyst, to produce third molecules comprising a hydrosilylation-modified polysilazane that contains the UV-active functional group. Many possible starting formulations are described, and methods are disclosed for carrying out the chemical reactions to generate the hydrosilylation-modified polysilazanes. The hydrosilylation-modified polysilazanes may then be 3D-printed and thermally treating to fabricate a ceramic material.

Abstract: The present invention relates to a silicone composition C that is crosslinkable by exposure to radiation with a wavelength between 200 nm and 450 nm, comprising: at least one radical photoinitiator A; and at least one co-initiator B chosen from compounds comprising at least one hydrogen atom bonded to a silicon atom.

Abstract: The present invention aims to provide a photocurable resin composition capable of constituting a composition having high printability. The present invention relates to a photocurable resin composition containing (A) an allylic polymer produced by polymerization of an allylic compound represented by the following formula (I), and (B) a gelling agent, wherein R1 and R2 each represent H or CH3; X represents an a-valent group having an unsubstituted saturated or partially unsaturated four- to eight-membered cyclic structure; and a represents 2 or 3.

Abstract: This invention relates to photocurable electron deficient olefin-containing compositions, such as those containing certain 2-cyanoacrylates, 2-cyanopentadienoates, methylidene malonates, and vinylidine cyanide, and photolatent bases. When exposed to radiation in the electromagnetic spectrum, the compositions show a delay cure property.

Abstract: To provide a curable composition whereby it is possible to obtain a cured product having a high Abbe number and being excellent in transparency, crack resistance and releasability; and such a cured product. A curable composition comprises, in specific ratios, surface-modified metal oxide particles (A) having (meth)acryloyl-group-containing surface-modifying groups on the surface of the metal oxide particles, a compound (B) having a fluorine atom and at least one (meth)acryloyl group, a compound (C) having a urethane bond or —OCH2CH(OH)CH2—, having at least two (meth)acryloyl groups and having a mass-average molecular weight of at least 1,000, a compound (D) having no unsaturated bond-containing ring structure and having at least one (meth)acryloyl group, and a polymerization initiator (E).

Abstract: Provided are an active energy ray-curable composition which has a low viscosity suitable for coating and also exhibits a high refractive index in terms of a cured product thereof, a cured product thereof, and a plastic lens. The active energy ray-curable composition contains a phenylbenzyl (meth)acrylate (A) and a bicarbazole compound (B) represented by the following structural formula (1) (in the formula, X1 and X2 each independently represent a photopolymerizable functional group, a structural moiety having a photopolymerizable functional group, or a hydrogen atom, provided that at least one of X1 and X2 represents a photopolymerizable functional group or a structural moiety having a photopolymerizable functional group; and R1 and R2 each independently represent a hydrogen atom, an alkyl group having 1 to 4 carbon atoms, an alkoxy group having 1 to 4 carbon atoms, a bromine atom, or a chlorine atom).

Abstract: The present invention relates to a super absorbent polymer and a manufacturing method thereof. More particularly, the present invention relates to a manufacturing a fine powder reassembly in which excellent physical properties are maintained.

Abstract: The present invention relates to a polybutylene terephthalate (PBT) elastomer composition having excellent heat resistance, and more particularly to a polybutylene terephthalate (PBT) elastomer composition comprising: a PBT resin; a vegetable oil or an environmentally friendly plasticizer, which serves to reduce the hardness of the PBT resin; a glycol-modified polyethylene terephthalate (PET-G) resin and a thermoplastic polyester elastomer (TPEE) resin, which serve to improve physical properties and processability; and a core-shell type copolymer having excellent miscibility with the plasticizer. In a preferred embodiment, the PBT elastomer composition comprises: 100 parts by weight of a PBT resin; 10 to 120 parts by weight of an environmentally friendly plasticizer; and 10 to 120 parts by weight of a thermoplastic copolyester elastomer (TPEE) resin.

Abstract: Provided are a curable composition for inkjet, which not only allows surface curability in formation of a coating film by an inkjet system to be enhanced, but also is not reduced in characteristics conventionally provided, such as solder heat resistance and gold plating resistance, and a cured product and a printed wiring board using the curable composition. The curable composition for inkjet of the present invention includes (A) an alkylene chain-containing bifunctional (meth)acrylate compound, (B) an ?-aminoalkylphenone-based photopolymerization initiator, and (C) an acylphosphine oxide-based photopolymerization initiator, wherein, when the thickness is 10 ?m, the absorbance at a wavelength of 365 nm is 0.08 to 0.8 and the absorbance at a wavelength of 385 nm is 0.05 to 0.3.

Abstract: The present disclosure is directed to methods of making a polymer, including exposing a reaction mixture including a strained cyclic unsaturated monomer and an organic initiator to a stimulus to provide an activated organic initiator, whereby the activated organic initiator is effective to polymerize the strained cyclic unsaturated monomer via a 4-membered carbocyclic intermediate to provide a polymer having constitutional units derived from the strained cyclic unsaturated monomer.

Abstract: A coating composition containing added diol functionality to a urethane, a urea, or polyurethane urea functional resin where an adipic acid dihydrazide chain extender, or free adipic acid dihydrazide active hydrogens react with the oxirane group found in glycidol is described. The combination of diisocyanate, a polyether segment, optionally at least one polyester diol segment, optionally at least one poly(tetrahydrofuran) diol segment, optionally and at least one dimethylol propionic acid diol segment, at least one dihydrazide segment and glycidol compound introduces an increased hydrophilic structure, by diol addition, in compositions that are usable as coatings, on for example, medical devices.

Abstract: The purpose is to provide an organic EL display device which has good sensitivity and is free from the occurrence of luminance decrease or pixel shrinkage, thereby having excellent long-term reliability. In order to achieve the above-described purpose, provided is the following configuration. Namely, an organic EL display device wherein an insulating layer formed on a first electrode is a cured film obtained by curing a photosensitive resin composition; and the residual amount of acid anhydrides contained in the cured film is from 0.003 to 0.04 (inclusive) when the residual amount of aromatic rings contained in the cured film is taken as 1 (the reference value).

Abstract: A polymer composite comprising quantum dots. The polymer composite comprises: (a) quantum dots; (b) a first polymer having a molecular weight from 1,000 to 100,000 and a solubility parameter from 12 to 17 (J/cm3)1/2; (c) a second polymer comprising polymerized units of a first compound comprising at least one readily polymerizable vinyl group and having a molecular weight from 72 to 500, wherein the second polymer has a solubility parameter from 16.5 to 20 (J/cm3)1/2; and (d) a third polymer comprising polymerized units of a second compound comprising at least two readily polymerizable vinyl groups and having a molecular weight from 72 to 2000; wherein the first polymer encapsulates the quantum dots; wherein a readily polymerizable vinyl group is part of a (meth)acrylate ester group or is attached directly to an aromatic ring.

Abstract: An embodiment relates to a polymerizable composition for a plastic lens. The polymerizable composition for a plastic lens according to the embodiment comprises a nonhalogenated tin-based catalyst and a diketone compound as a low-temperature reaction rate controlling agent. Accordingly, the polymerizable composition has a more stable pot life so that the polymerization rate can be appropriately controlled, thereby improving the reactivity and the workability, and that the generation of bubbles are prevented, thereby improving the transparency of the resin.

Abstract: A composition comprising an acrylamide compound (A1) having an ester structure and a molecular weight of from 150 to 200 and an acylphosphine oxide polymerization initiator (B1) is provided.

Abstract: Provided are an ultraviolet curable coating composition and an automobile part using the same. In an exemplary embodiment, the coating composition comprises a first urethane (meth)acrylate oligomer having 6 or more functional groups, a second urethane (meth)acrylate oligomer having 3 or more functional groups, a polyester (meth)acrylate oligomer, a hydroxy (meth)acrylate monomer having 3 or more functional groups, a multifunctional (meth)acrylate monomer having 3 or more functional groups, and a photopolymerization initiator, based on the total weight of the coating composition.