A resin composition includes the following components or a prepolymer thereof: (A) 100 parts by weight of an unsaturated CC double bond-containing polyphenylene ether resin; and (B) 10 parts by weight to 50 parts by weight of a compound of Formula (1), having a pH value of 10 or less. In Formula (1), n is an integer of 3 to 6, each Y and Z are independently selected from o-vinylphenoxy group and phenoxy group, and each Y and Z are not phenoxy group at the same time. The prepolymer is prepared by subjecting a mixture to a prepolymerization reaction, and the mixture at least comprises the component (A) and the component (B). An article is made from the resin composition. The article includes a prepreg, a resin film, a laminate or a printed circuit board and achieves improvements in one or more properties including resin filling uniformity, dissipation factor variation rate under heat, glass transition temperature, Z-axis ratio of thermal expansion, peeling strength and thermal resistance after moisture absorption.

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A rigid foam including the reaction product of an (poly)isocyanate, and a polyethercarbonate polyol copolymer is described. The polyethercarbonate polyol copolymer is derived from the copolymerisation of one or more epoxides with CO2, wherein the total-CO2 content of the polyethercarbonate polyol copolymer is between 1 and 40 wt %, the carbonate linkages are <95% of the total linkages from the copolymerisation, and the molecular weight is between 100 to 5000 g/mol. The foam is a polyurethane foam, more typically, a polyisocyanurate or a mixed polyisocyanurate/polyurethane foam. Methods, polyols and compositions for producing the foams are also described.

The invention provides a unique container combination comprised of a container equipped with a thermoset viscoelastomeric interfacing section which serves to confine items placed thereupon. The interfacing viscoelastomeric section may be chemically bonded to the container support or cohesively bonded thereto. The interfacing thermoset viscoelastomeric section adhesively immobilizes items placed thereupon while tenaciously clinging (chemically or adhesively) to the container supportive structure. Containers equipped with the thermoset viscoelastomeric section surprisingly create an aseptic environment especially adaptable to hygienic applications while also affording superior protection against impact damage.

A resin composition and an article made from the resin composition are disclosed. The resin composition comprises: a first vinyl-containing polyphenylene oxide resin, a prepolymer thereof or both; and a second vinyl-containing polyphenylene oxide resin or a prepolymer thereof; wherein the first vinyl-containing polyphenylene oxide resin has a number average molecular weight of between 500 and 1500, and the second vinyl-containing polyphenylene oxide resin has a number average molecular weight of between 1600 and 3500.

A resin composition and an article made from the resin composition are disclosed. The resin composition comprises: a first vinyl-containing polyphenylene oxide resin, a prepolymer thereof or both; and a second vinyl-containing polyphenylene oxide resin or a prepolymer thereof; wherein the first vinyl-containing polyphenylene oxide resin has a number average molecular weight of between 500 and 1500, and the second vinyl-containing polyphenylene oxide resin has a number average molecular weight of between 1600 and 3500.

A prepolymerized resin and a method of preparing the prepolymerized resin are provided, the method comprising a step of prepolymerizing t-butyl styrene and unsaturated bond-containing polyphenylene oxide. The unsaturated bond-containing polyphenylene oxide comprises: methacrylate-terminated polyphenylene oxide, vinylbenzyl-terminated polyphenylene oxide, vinylbenzyl-modified bisphenol A polyphenylene oxide resin, vinyl-containing chain-extended polyphenylene oxide resin or a combination thereof. A resin composition comprising the prepolymerized resin and an article made from the resin composition are also provided.

Compositions and methods related to the synthesis and application of poly(aryl ether)s are generally described.

Provided herein are methods for preparing dynamic cross-linked polymer compositions derived from an ester oligomer component, a chain extender component, and one or more of a transesterification or poly condensation catalyst are described. The dynamic cross-linked polymer compositions may be prepared via melt poly condensation.

The present invention relates a process of the present invention for the preparation of an aqueous composition comprising a polyurethane carrying COOH groups and/or salt groups thereof, comprises the steps of (i) reacting at least one first polyisocyanate (A1) with at least one polyol carrying at least one COOH group (BX) and optionally at least one first polyol carrying no COOH group (B1) to form a first composition (C1), (ii) treating the first composition (C1) obtained in step (i) with at least one second polyol carrying no COOH group (B2), and optionally with at least one second polyisocyanate (A2), to form a second composition (C2), and (iii) optionally treating the second composition (C2) obtained in step (ii) with at least one third-polyisocyanate (A3), to form a third composition (C3), wherein step (i) is stopped at a reaction index in the range of 0.05 to 0.94, wherein reaction index=reaction rate?[mol initial NCO groups of all A1/(mol initial OH groups of all BX and, if present, mol initial OH groups of all B1)] (formula 1) wherein reaction rate=1 minus (mol NCO groups of C1/mol initial NCO groups of all A1), and to an aqueous composition comprising a polyurethane carrying COOH groups and/or salt groups thereof obtainableby this process, to a process for the preparation of an aqueous composition comprising a polyurethane/poly(meth)acrylate hybrid polymer using the aqueous composition comprising a polyurethane carrying COOH groups and/or salt groups thereof of the present invention, to aqueous compositions comprising a polyurethane/poly(meth)acrylate hybrid polymer obtainable by the this process, to coating compositions comprising the aqueous composition comprising a polyurethane carrying COOH groups and/or salt groups thereof or the aqueous compositions comprising a polyurethane/poly(meth)acrylate hybrid polymer, and to substrates coated with these coating compositions.

A polyester copolymer useful for food and beverage container coatings is disclosed. The copolymer is derived from ingredients including at least a diepoxide, such as a diglycidyl ether, and a glass transition increasing monomer, such as a pentaspiroglycol. In some approaches, the polyester copolymer is derived from reaction of a polyester prepolymer and a diepoxide resin.