In a process for producing a composite element having at least a covering layer and polyurethane foam, the covering layer is inserted into a mold and a polyurethane reaction mixture is introduced onto the covering layer. The polyurethane reaction mixture is reacted to form a polyurethane foam, wherein the polyurethane reaction mixture is obtained by mixing a) polyisocyanate with b) compounds having isocyanate-reactive OH groups, c) blowing agents including water, d) thickeners and e) catalysts. Bis(N,N-dimethylaminoethoxyethyl) carbamate, N,N,N-trimethyl-N-hydroxyethylbis(aminopropyl ether), N,N,N-trimethyl-N-hydroxyethyl(aminoethyl ether) or mixtures thereof and/or tetramethyldiaminoethyl ether are employed as catalysts and the polyurethane foam has a density of not more than 200 g/dm.sup.3.

The present invention relates to a two-component coating composition comprising (1) a paint base component comprising (A) at least one polycarbonate diol, (B) at least one polyaspartic ester, and (C) at least one filler modified with at least one organosilane, and (2) a hardener component comprising (D) at least one hexamethylene diisocyanate isocyanurate containing aliphatic polyester groups and having an isocyanate content of 5% to 23%. The present invention also relates to a method for producing a coating using the coating composition, and to the coatings produced accordingly.

A transparent composite material composition, comprises, based on a total amount of the transparent composite material: 90 to 99% by weight of a thermosetting urethane acrylate resin; and 1 to 10% by weight of an organic hydroperoxide initiator. Such a transparent composite material composition exhibits superior properties such as superior transparency, impact resistance, scratch resistance, and weather resistance while realizing weight reduction.

Provided is a method of preparing a transparent, non-elastomeric optical article including (1) combining to form a reaction mixture free of urethanation catalysts (a) a polyisocyanate component; and (b) an active hydrogen component of polyol and/or polythiol, and at least one compound containing both amine and hydroxyl functional groups; (2) allowing the polyisocyanate component to react with amine functional groups in the active hydrogen component to form an intermediate product including a polyurea prepolymer having hydroxyl functional groups in admixture with the polyol and/or polythiol and, optionally, the compound containing both amine and hydroxyl functional groups; (3) mixing the intermediate product with additional polyisocyanates and optionally a urethanation catalyst to form a second reaction mixture; (4) introducing the second reaction mixture to a mold to form a thermoset polymerizate; and (5) releasing the polymerizate from the mold. Optical films and articles prepared by the method also are provided.

The present invention relates to a two-component coating composition comprising (1) a paint base component comprising (A) at least one polycarbonate diol, (B) at least one diamine having secondary amino groups and having an aliphatic group (b1) between the nitrogen atoms of the amino groups, and also (2) a hardener component comprising (C) at least one polyisocyanate-modified polyester having an isocyanate content of 4% to 15%. The present invention also relates to a method for coating substrates by applying the coating composition, and to the use thereof.

A flame-retardant soundproofing material for vehicles includes a polyurethane foam obtained by foam-molding a urethane resin composition. The urethane resin composition includes an isocyanate component (A), a polyol component (B), a flame-retardant plasticizer (C), and an antioxidant (D). The isocyanate component (A) includes a mixture of 2,4-diphenylmethane diisocyanate and 4,4-diphenylmethane diisocyanate, and one or more modified products selected from a carbodiimide-modified product and a uretonimine-modified product of at least one of 2,4-diphenylmethane diisocyanate and 4,4-diphenylmethane diisocyanate of the mixture.

Provided herein is a two-component polyurethane adhesive composition.

A composition for the preparation of a transparent, non-elastomeric optical article is provided, the composition including: (1) a polyisocyanate component containing one or more different polyisocyanates; and (2) a component that is reactive with isocyanates, including: (a) optionally at least one polyol having a number average molecular weight greater than 500; (b) (i) at least one polyol and/or polythiol and (ii) at least one compound containing both amine and hydroxyl functional groups, wherein the compound (ii) has a number average molecular weight less than 500; and optionally (3) a urethanation catalyst. Multi-step and one-pot methods of preparing a cured, non-elastomeric polyurethane-containing optical article are also provided.

Multi-layered golf ball core sub-assemblies and the resulting golf balls are provided. The core structure includes an inner core (center) comprising a foam composition, preferably foamed polyurethane. The intermediate and outer core layers are preferably formed from foamed and non-foamed thermoset compositions. For example, the intermediate core can be formed from a thermoset rubber so there are adjoining foam core layers (inner and intermediate) and the outer core layer can be formed from a non-foamed thermoset rubber. The core layers have different hardness and specific gravity levels. The core assembly preferably has a positive hardness gradient extending across the entire assembly. The core structure and resulting ball have relatively good resiliency.

There is provided a photosensitive resin composition which enables production of a lithographic printing plate precursor having a non-image portion which has good solubility in an alkali aqueous solution and which enables production of a lithographic printing plate having excellent printing durability, excellent chemical resistance, and, in particular, excellent printing durability at the time of using a low quality print material, a lithographic printing plate precursor obtained by using the photosensitive resin composition, and a method for producing a lithographic printing plate.

The photosensitive resin composition contains a polymer compound having a linking group represented by Formula A-1 in the main chain; and an infrared absorbing material. In Formula A-1, R.sup.1 and R.sup.2 each independently represent a hydrogen atom or a monovalent organic group, and X.sup.1 is a specific linking group.

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