摘要:
An electrically conductive material may be electrically insulated with a curable composition that includes a curable compound, such as an unsaturated polyester resin, and a functionalized poly(arylene ether) resin. After curing, the composition exhibits increased flexural strength, increased impact strength, and improved tensile properties relative to currently employed insulation materials.
摘要:
A poly(arylene ether) composition comprises a first poly(arylene ether) resin having an intrinsic viscosity greater than or equal to about 0.3 dl/g, as measured in chloroform at 25° C. and a second viscosity poly(arylene ether) resin having an intrinsic viscosity less than or equal to about 0.17 dl/g, as measured in chloroform at 25° C. wherein the composition is essentially free of plasticizers.
摘要:
A curable composition containing a functionalized poly(arylene ether), an acryloyl monomer, and a filler is compression molded by a method that includes introducing the composition to a mold, closing the mold and applying a first temperature of about 120 to about 200° C. and a first pressure of about 1,000 to about 40,000 kilopascals for about 1 to about 100 seconds; opening the mold for about 0.005 to about 10 seconds; and closing the mold a second time and applying a second temperature of about 120 to about 200° C. and a second pressure of about 1,000 to about 40,000 kilopascals for about 20 to about 100 seconds. Molded articles formed by the method exhibit improved dielectric properties.
摘要:
A curable resin composition including a poly(arylene ether), an allylic monomer, and an acryloyl monomer may be formulated as a powder. The resin composition exhibits improved toughness, and it is useful in thermoset processing applications where use of powdered resins is preferred.
摘要:
The invention relates to a polyphenylene ether resin containing residual aliphatic unsaturation as well as composites, blends, and articles made from the polyphenylene ether resin containing residual aliphatic unsaturation. Also included are reaction products between the polyphenylene ether resin containing residual aliphatic unsaturation and other resins and unsaturated resin formulations, e.g., thermosetting polyesters, acrylics, bismaleiimides, silicones, and allylics, and thermoplastics such as polyolefins, styrenics, rubbers, etc.
摘要:
A composition comprises a bitumen and a poly(arylene ether) having an intrinsic viscosity less than 0.40 deciliters per gram. The composition exhibits high softening and flow temperatures, and high hardness.
摘要:
A curable resin composition includes an unsaturated polyester, an alkenyl aromatic compound, and a capped poly(arylene ether). The composition is suitable for low temperature curing and exhibits reduced curing shrinkage and reduced brittleness.
摘要:
An elastomer-thermoplastic composition comprising styrene butadiene random copolymer and poly(arylene ether) resin and methods of making the composition are disclosed.
摘要:
A method comprising (a) synthesis of a poly(arylene ether) having the structure (1) wherein m is an integer having an average value in the range from about 3 to about 300; (b) solution functionalization of polymer (1) to form functionalized poly(arylene ether) having the structure (2) wherein X is a reactive functional group selected from the group consisting of anhydride, hydroxyl, epoxy, carboxyl, —R1OH, R1CO2R2, —R1CH2═CH2, or vinyl, wherein R1 is a primary or secondary divalent alkyl or haloalky group having from 1 to 20 carbons, or an aryl group and R2 is a primary or secondary alkyl group having from 1 to 10 carbons; and Q4 is hydrogen, X, or a mixture thereof; (c) reaction of functionalized poly(arylene ether) (2) with a poly(organosiloxane) having structure (3): wherein x is zero or one and Y is a functional group reactive with X, selected from the group consisting of —OH, —CH2═CH2, epoxy, amino, carboxy, —C(O)CH2OH, or hydrogen, to form a poly(arylene ether)-poly(siloxane) copolymer, wherein the functionalization is in solution, and copolymer synthesis and isolation are effected by first solution and then melt copolymerization.
摘要:
The invention is directed to a method for producing poly(arylene) ethers with improved particle size characteristics. The improved particle size characteristics of the polyphenylene ether include one or both of: (i) up to about 50 weight percent of particles smaller than 38 micrometers; and a (ii) mean particle size greater than 100 or more micrometers.