A composition, made from recycled solid surface material or articles, that is suitable for making solid surface materials or articles, and a solid surface material or article made therefrom, the composition comprising a matrix resin of unsaturated polyester resin, inorganic filler particles, ground solid surface primary particles, ground solid surface secondary particles, and, optionally, solid surface dust particles. The composition is especially useful in making three-dimensional, rigid-surface, polymeric solid surface material and articles that are free of objectionable surface voids and have a smooth and stable continuous surface.

The present teachings include powder coating including a plurality of core/shell particles. Each particle of plurality of core/shell particles has a size of from about 3 microns to about 100 microns. Each particle of the plurality of core/shell particles has a core including a cross-linkable crystalline polyester resin having a melting temperature of less than about 150 C. Each particle of the plurality of core/shell particles has a shell including a cross-linkable amorphous polyester resin having a glass transition temperature greater than 40 C. Each particle of the plurality of core/shell particles includes a thermal initiator.

The disclosure relates to a heat curable powder coating composition suitable for being cured at a temperature from 60 to 130 C. containing: a thermal initiation system and a resin system, wherein the reactivity of the thermal initiation system is such that the thermal initiation system provides a geltime between 2.5 and 1000 minutes at 60 C. in butane diol-dimethacrylate as measured according to DIN 16945 using 1 wt % of the thermal initiation system in 99 wt % of butane dioldimethacrylate, wherein the amount of thermal initiation system is chosen such that when the powder coating composition is applied to a substrate and cured at a temperature of 130 C. for 20 minutes.

The present invention provides a composite molded article in which aliphatic polyester-based resin expanded beads and a thermosetting resin cured product containing a reinforcing fiber, which is formed between the expanded beads, are integrally fixed, wherein the aliphatic polyester-based resin is a polylactic acid-based resin, and a flexural modulus E (MPa) of the composite molded article and a density (kg/m.sup.3) of the composite molded article satisfy Expression (1): E.sup.1/3/0.02 [(MPa).sup.1/3(kg/m.sup.3).sup.1], and a composite molded article and a laminate having more improved strength.

Radiation-curable, polyester acrylate-containing compositions (I) obtainable by reacting 0.5 to 20 mol % of a polyester polyol (A) and 0.5 to 30 mol % of a polyester diol (B) with 1 to 10 mol % of phthalic anhydride (C) and 65 to 75 mol % of (meth)acrylic acid (D) in the presence of an acidic esterification catalyst, a hydrocarbon (L), and a polymerization inhibitor. Reaction temperatures range from 60 to 140 C. The hydrocarbon (L) functions as solvent, forms an azeotropic mixture with water, and is removed distillatively after esterification. Water formed in the reaction is removed azeotropically. After neutralization of the esterification catalyst, free (meth)acrylic acid is reacted with an epoxide compound (E) in an amount equivalent to the acid number of the reaction mixture. The compound (E) has at least two epoxide groups per molecule. The compositions are suitable for coating the surfaces of solid substrates.

The invention relates to a one component heat-curable powder coating composition comprising a resin containing reactive unsaturations and wherein all said reactive unsaturations are carbon carbon double bonds connected directly to an electron withdrawing group, a thermal initiation system comprising a transition metal catalyst and a peroxide, wherein the peroxide is chosen from the group of peroxyesters, mono-peroxycarbonates and mixtures thereof and a co-crosslinker chosen from the group of vinylethers, vinylesters, vinylamides, itaconates, enamines and mixtures thereof.

The invention relates to a one component heat curable powder coating composition comprising a resin containing reactive unsaturations and wherein all said reactive unsaturations are carbon carbon double bonds connected directly to an electron withdrawing group, a thermal initiation system comprising a peroxide chosen from the group of compounds represented by formula (1) ##STR00001##
wherein R.sup.1 and R.sup.2 each independently stand for an optionally substituted alkyl of 1 to 30 C-atoms, wherein the 1 to 30 C-atoms do not include the C-atoms of the substituents or for an optionally substituted aryl of 6 to 18 C-atoms, wherein the 6 to 18 C-atoms do not include the C-atoms of the substituents, and a co-crosslinker chosen from the group of vinylethers, vinyletherurethanes, vinylesters, vinylamides, itaconates, enamines, vinylureas and mixtures thereof.

A fiber composite material includes mixed fibers including a plant fiber and an ultrahigh-strength elongation fiber and thermoplastic resin that binds the mixed fibers each other. The ultrahigh-strength elongation fiber has tensile modulus that is 4000 MPa or greater and is greater than tensile modulus of the thermoplastic resin and has tensile elongation at break that is greater than tensile elongation at break of the plant fiber.

A biodegradable composition is disclosed. The biodegradable composition includes (i) a biodegradable polymer and (ii) a cellulose ester. Films that include or are formed from the biodegradable composition, as well as articles that include a substrate and a layer of the biodegradable composition on a surface thereof, are also described.

Methods of forming a boat hull include applying an outer polymer layer onto a hull mold, the outer polymer layer being impregnated with a biologically active chemical substance that inhibits biofouling-induced chemical, biological, and bio-proliferative damage. An inner polymer layer is applied onto the outer polymer layer, the inner polymer layer being impregnated with a biologically active chemical substance that inhibits biofouling-induced chemical, biological, and bio-proliferative damage. One or more layers of fiberglass matting are applied on the inner polymer layer, the fiberglass matting being saturated with a polymer selected from one of a group of polymers comprising a vinyl ester polymer, a phthalic unsaturated polyester polymer, and an epoxy polymer.