C08J2351/08

Polyphenylene ether resin composition, prepreg, metal-clad laminate and printed wiring board

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.

FILMS AND COMPOSITES AND METHODS OF PRODUCTION AND USE
20200354562 · 2020-11-12 ·

The present invention includes compositions and methods of making films, adhesive patches, or composites comprising a polyvinyl caprolactam-polyvinyl acetate-polyethylene glycol graft copolymer (PCL-PVAc-PEG) and a partially hydrophilic oil, wherein the composition transitions from a viscous liquid, to an adhesive, and to a film as a weight percent (wt %) ratio of PCL-PVAc-PEG to partially hydrophilic oil changes.

3D in vitro Models of Lung Tissue

The invention relates to the discovery of tissue mimicking constructs and compositions that can be used to study the growth and development of cells in vitro. In certain embodiments, the invention provides methods of culturing cells on the tissue mimicking polymer microspheres. In other embodiments, the invention provides methods of treating a disease or disorder using the compositions and constructs of the invention.

COMPOSITION FOR OPTICAL STEREOLITHOGRAPHY, STEREOLITHOGRAPHIC OBJECT, AND METHOD FOR PRODUCING THE SAME
20200339722 · 2020-10-29 ·

Provided is a composition for optical stereolithography the stereolithography (photocuring) of which is completed in a shorter time and which provides a stereolithographic object having excellent strength (strength that prevents the occurrence of a fracture and the like when the stereolithographic object is subjected to an impact, or dropping, and strength with which the stereolithographic object can withstand repeated folding). The composition for optical stereolithography of the present invention includes (A) a diallyl phthalate-based polymer; (B) radical polymerizable compounds having a methacrylic group and/or an acrylic group; (C) a radical polymerization initiator; and (D) a sensitizer. The (B) radical polymerizable compounds includes at least (B1) an epoxy (meth)acrylate having a methacrylic group and/or an acrylic group, or (B2) a dioxane (meth)acrylate having a methacrylic group and/or an acrylic group. The composition contains 0.5 to 10% by mass of (A), 5 to 43% by mass of (B1) and (B2), 20 to 95% by mass of (B) other than (B1) and (B2), 0.1 to 5% by mass of (C), and 0.1 to 5% by mass of (D).

THERMOSETTING RESIN COMPOSITION AND PRINTED CIRCUIT BOARD INCLUDING THE SAME

A thermosetting resin composition and a printed circuit board including the same are provided. The composition adopts a thermosetting polyphenylene ether resin whose terminal functional group is a styrene and an acrylic. The thermosetting polyphenylene ether resin has an appropriate hydroxyl value to be easily cured, and the ratio of two different functional groups is between 0.5 and 1.5, for adjusting heat resistance, fluidity, and filling property. A particle diameter of 1 m to 40 m is added to control a dielectric constant, and after curing characteristics of high dielectric constant, low dielectric loss, high Tg, high rigidity, high flame resistance and low moisture absorption rate can be achieved.

POLYPHENYLENE ETHER RESIN COMPOSITION, PREPREG, METAL-CLAD LAMINATE, AND PRINTED WIRING BOARD

A polyphenylene ether resin composition includes a modified polyphenylene ether copolymer, a high-molecular-weight compound, and a crosslinking agent for the modified polyphenylene ether copolymer. The modified polyphenylene ether copolymer includes a substituent having a carbon-carbon unsaturated double bond at a molecular chain end of the modified polyphenylene ether copolymer. 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. The crosslinking agent includes at least two carbon-carbon unsaturated double bonds per molecule, and includes at least one of dicyclopentadiene acrylate and dicyclopentadiene methacrylate. In a cured state of the polyphenylene ether resin composition, the modified polyphenylene ether copolymer is phase separated from the high-molecular-weight compound.

RESIN REINFORCING FIBERGLASS AND THERMOPLASTIC RESIN COMPOSITION
20200247962 · 2020-08-06 · ·

The present disclosure aims to provide a resin reinforcing fiberglass, which has a high adhesiveness with a thermoplastic resin for enhancing the mechanical strength and the anti-mold fouling property of a thermoplastic resin composition, and a thermoplastic resin composition including such a fiberglass. A resin reinforcing fiberglass comprises (a) a fiberglass, and (b) a silane coupling agent and (c) a maleic anhydride grafted polymer, which are adhered to a surface of the (a) fiberglass.

COMPOSITIONS AND METHODS OF MAKING THERMOSET FOAMS FOR SHOE SOLES

A footwear article is provided. The footwear article includes a shoe sole. The shoe sole includes a crosslinked foam polyolefin elastomer having a density less than 0.88 g/cm.sup.3, the crosslinked foam polyolefin elastomer including: a silane-grafted polyolefin elastomer, a silane-grafted olefin block copolymer, a polyolefin elastomer (POE), an olefin block copolymer (OBC), or a combination thereof; an ethylene vinyl acetate (EVA) copolymer; a crosslinker; a condensation catalyst; and a foaming agent. The shoe sole exhibits a compression set of from about 1.0% to about 50.0%, as measured according to ASTM D 395 (48 hrs @ 50 C.).

COMPOSITE STRETCHABLE FILM AND METHOD FOR FORMING SAME

The present invention is a composite stretchable film including: a surface film which is a cured product of a polyurethane 1 containing a copolymer of one or more of units a1 to a4 and silicone-pendant type urethane units b1 and/or b2 represented by the following general formula (1); and an inner film which is a cured product of a polyurethane 2 containing a unit c having polyether and urethane bonds represented by the following general formula (2), on which the surface film is laminated. The present invention provides a stretchable film that has excellent stretchability and strength, with the film surface having excellent water repellency, and a method for forming the same.

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Surface modification method

Provided are methods for surface-modifying a thermoplastic resin which produce surfaces that show not only low adsorption of proteins and cells but also selective adsorption or adhesion of specific cells such as cancer cells, and further have excellent durability. A method for surface-modifying an object made of a thermoplastic resin, the method including: step 1 of forming polymerization initiation points on the surface of the object; and step 2 of radically polymerizing at least a hydrophilic monomer starting from the polymerization initiation points by irradiation with UV light having a wavelength of 300 to 400 nm to form a graft layer having a thickness of 2 to 100 nm on the surface of the object.