A polyphenylene ether resin composition includes (A) a modified polyphenylene ether that is end-modified with a substituent having a carbon-carbon unsaturated double bond, and (B) a crosslinking agent having a carbon-carbon unsaturated double bond. The crosslinking agent serving as component (B) includes from 50 to 100 mass % of (B-1) divinylbenzene and (B-2) polybutadiene. Components (A) and (B) are included in a ratio therebetween, expressed as the mass ratio (A):(B), of from 65:35 to 95:5. Components (B-1) and (B-2) are included in a ratio therebetween, expressed as the mass ratio (B-1):(B-2), of from 1:100 to 1.5:1.

The invention provides methods for preparing a polymer-grafted and functionalized nonwoven membrane adapted for use in separation processes. The invention further provides so-formed membranes as well as improved separation methods utilizing the membranes. The polymer-grafted and functionalized nonwoven membranes are particularly formed utilizing thermal grafting. In particular, an acrylate or methacrylate polymer can be grafted onto a nonwoven web comprising a plurality of polymeric fibers to form a plurality of polymer segments covalently attached to the polymeric fibers. Thermal grafting particularly can comprise using a thermal initiator and exposing the nonwoven web to heat to initiate polymerization of the acrylate or methacrylate monomer. The grafted polymeric fibers can be functionalized to attach at least one functional group adapted for binding to a target molecule to the polymer segments of the grafted polymeric fibers.

The present invention relates to a resin composition for forming an optical film, an optical film, and a polarizing plate, in which the resin composition for forming an optical film improves adhesion between an antiglare layer and a light-transmitting substrate film and enables the antiglare layer and the optical film to exhibit excellent optical properties such as appropriate haze, low gloss value, and excellent antiglare properties. The composition for forming an optical film is a resin composition for forming an optical film for forming an infiltration layer and an antiglare layer having surface irregularities on a light-transmitting substrate film, and comprises: a binder-forming compound including a polyfunctional (meth)acrylate-based compound having three or more functionalities, and a permeable compound having a hydrophilic functional group and a photo-curable functional group; two or more light-transmitting fine particles having a sub-micron (sub-m) scale; and a permeable solvent capable of dissolving at least a part of the light-transmitting substrate film, wherein the binder-forming compound and the permeable solvent have a weight ratio of 1:0.04 or more.

A build-up film with low dielectric loss, a preparation method therefor, and a circuit substrate structure are provided. The build-up film is prepared from raw materials including 5-10 parts by mass of monofunctional benzoxazine having indene oligomer, 40-65 parts by mass of polymerized aromatic-based maleimide, 30-50 parts by mass of allyl benzoxazine, 0.1-3 parts by mass of initiator, 250-400 parts by mass of inorganic filler, and 0.1-5 parts by mass of silane coupling agent. The build-up film has low dielectric loss and high tensile strength. Low dielectric loss enables it to be applied in the field of 5G. For example, the build-up film can be used to packaging integrated circuit substrates, which is conducive to minimizing the transmission loss.

Provided is a prepreg containing a urethane-modified epoxy (meth)acrylate (A) that is a reaction product of an epoxy (meth)acrylate (a1) having an average of 1.8 to 2.6 hydroxy groups and a polyisocyanate (a2) having an average of 2 to 3 isocyanate groups, an ethylenically unsaturated monomer (B), a polymerization initiator (C), and reinforcing fibers (D) as essential components, in which the molar ratio (NCO/OH) of isocyanate groups (NCO) in the polyisocyanate (a2) to hydroxy groups in the epoxy (meth)acrylate (a1) is 0.6 to 1.1, and the proportion of the ethylenically unsaturated monomer (B) in the total mass of the epoxy (meth)acrylate (a1) and the ethylenically unsaturated monomer (B) is 10% to 50% by mass. The prepreg has good workability and good moldability and can be appropriately used for various molded articles such as automotive members because various excellent physical properties such as interlaminar shear strength and heat resistance are provided.

The present invention relates to a pigmented aqueous basecoat material comprising a polyether-based reaction product which is preparable by reaction of (a) at least one cyclic carboxylic anhydride comprising a free carboxylic acid group and/or the halide of a carboxylic acid group

with
(b) at least one polyether of the general structural formula (I)

##STR00001##

in which
R is a C.sub.3 to C.sub.6 alkylene radical and n is selected accordingly such that the polyether (b) possesses a number-average molecular weight of 800 to 4000 g/mol, the components (a) and (b) being used in the reaction in a molar ratio of 0.7/2.3 to 1.6/1.7 and the resulting reaction product possessing an acid number of 10 to 50 mg KOH/g.

A polyphenylene ether resin composition contains a modified polyphenylene ether copolymer and a high-molecular-weight compound. The modified polyphenylene ether copolymer is obtained by modifying a polyphenylene ether copolymer at a phenolic hydroxy group of a molecular chain end with a substituent having a carbon-carbon unsaturated double bond. The high-molecular-weight compound has a glass transition temperature (Tg) measured by differential scanning calorimetry of 20 C. or lower and has a number-average molecular weight Mn ranging from 1000 to 10000, inclusive. In a cured state of the polyphenylene ether resin composition, the modified polyphenylene ether copolymer is phase separated from the high-molecular-weight compound.

The present invention relates to a hard coating film, and, more particularly, to a hard coating film having hardness and excellent physical properties. According to the present invention, the hard coating film has high physical properties including hardness, fouling resistance, slip resistance, scratch resistance, transparency, durability, light resistance, and light transmittance. Thus, the hard coating film can find useful applications in various fields thanks to its excellent physical properties.

A build-up film with low dielectric loss, a preparation method therefor, and a circuit substrate structure are provided. The build-up film is prepared from raw materials including 5-10 parts by mass of monofunctional benzoxazine having indene oligomer, 40-65 parts by mass of polymerized aromatic-based maleimide, 30-50 parts by mass of allyl benzoxazine, 0.1-3 parts by mass of initiator, 250-400 parts by mass of inorganic filler, and 0.1-5 parts by mass of silane coupling agent. The build-up film has low dielectric loss and high tensile strength. Low dielectric loss enables it to be applied in the field of 5G. For example, the build-up film can be used to packaging integrated circuit substrates, which is conducive to minimizing the transmission loss.

A method of making a lignocellulose incorporating methacrylate functionality from date palm biomass can include extracting sieved date palm biomass at a first predetermined temperature (110? C.) to obtain an extracted date palm biomass; adding an acid to the extracted date palm biomass to obtain a mixture and stirring and refluxing the mixture at a second predetermined temperature (100? C.) to obtain a refluxed cellulose-hemicellulose-lignin residue; dissolving the refluxed cellulose-hemicellulose-lignin residue in a solvent to obtain a solution; adding triethylamine and methacrylic anhydride to the solution to obtain a reaction solution mixture and stirring while heating the reaction solution mixture to react the triethylamine and the methacrylic anhydride with the solution to obtain a reacted solution mixture; pouring the reacted solution mixture into an ice-cold solvent to obtain a solution mixture and separating cellulose-hemicellulose-lignin residue from the solution mixture via centrifuging; dissolving centrifuged cellulose-lignin residue in water to obtain the lignocellulose incorporating methacrylate functionality.