Golf balls having covers made of thermoplastic polyurethane compositions are provided. Multi-piece golf balls can be made. In one embodiment, the outer cover layer is formed from a composition comprising a thermoplastic polyurethane and polydimethylsiloxane compound. Functionalized polydimethylsiloxane compounds also can be used to treat thermoplastic polyurethane golf ball covers. The cover composition and surface coatings can further include catalysts, ultraviolet (UV)-light stabilizers, and other additives. The coating methods have many benefits and the finished balls with thermoplastic polyurethane covers have good physical properties.

A high stress thermal plastic polyurethane, its preparing formulation and making process are disclosed. In particular, the high stress thermal plastic polyurethane is prepared from a formulation comprises a polycarbonate derivative and has a stress more than 2.5 MPa.

Waterproof urethane-based adhesive compositions are described herein. Silane is reacted with prepolymer urethane to at least partially end-cap the urethane. A reinforcing extender, a thixotropic agent, a magnetic agent, a first catalyst, and methylethylketoximino (MEKO) silane are also added to the composition to form the deactivated adhesive composition. Prior to coating a substrate with the adhesive, a second catalyst is added. The second catalyst speeds up the curing time and improves the shelf life of the moisture cure adhesive. The adhesive is cured to a final product that is waterproof, hydrolytically stable, and pH resistant.

Provided is a moisture-curable polyurethane hot-melt adhesive (PUR) that, when heated, produces less hazardous isocyanate gas, and is safe and easy for a user to handle.

This moisture-curable polyurethane hot-melt adhesive comprises 100 parts by weight of a urethane pre-polymer which is a product obtained from a reaction between an excessive amount of diphenylmethane diisocyanate and a mixture of a crystalline polyester polyol and a non-crystalline polyester polyol and/or a non-crystalline polyether polyol, and 5-20 parts by weight of a surface-modified silica gel containing an amino group. Preferable as the surface-modified silica gel is a silica gel to which a residual group of a silane oligomer, which is a hydrolytic product of aminoalkyl(di or tri)alkoxysilane, is linked.

Golf balls having covers made of thermoplastic polyurethane compositions are provided. Multi-piece golf balls can be made. In one embodiment, the outer cover layer is formed from a composition comprising a thermoplastic polyurethane and polydimethylsiloxane compound. Functionalized polydimethylsiloxane compounds also can be used to treat thermoplastic polyurethane golf ball covers. The cover composition and surface coatings can further include catalysts, ultraviolet (UV)-light stabilizers, and other additives. The coating methods have many benefits and the finished balls with thermoplastic polyurethane covers have good physical properties.

Golf balls having covers made of thermoplastic polyurethane compositions are provided. Multi-piece golf balls can be made. In one embodiment, the outer cover layer is formed from a composition comprising a thermoplastic polyurethane and polydimethylsiloxane compound. Functionalized polydimethylsiloxane compounds also can be used to treat thermoplastic polyurethane golf ball covers. The cover composition and surface coatings can further include catalysts, ultraviolet (UV)-light stabilizers, and other additives. The coating methods have many benefits and the finished balls with thermoplastic polyurethane covers have good physical properties.

Thermal insulation foam for high explosives is applied to the inner surface of warheads and guided weapons filled with high explosives, thus maximizing the storability and survivability of warheads and guided weapons despite changes in temperature and external environmental factors such as impacts. The thermal insulation foam includes porous microspheres, a prepolymer having a hydroxyl group, and an isocyanate, wherein the prepolymer includes any one selected from among a polybutadiene-, a polyester-, a polyether-, a polysiloxane-, and a fluorine-based prepolymer.

The present invention is an additive for water-based paint, containing a siloxane-branched polyether-modified silicone shown by an average composition formula (1) R.sup.1.sub.aR.sup.2.sub.bR.sup.3.sub.cSiO.sub.(4-a-b-c)/2 and having a weight-average molecular weight in a range of 500 to 100,000. In the formula (1), R.sup.1 represents an alkyl group, an aryl group, an aralkyl group, or an organic group shown by a general formula (2) C.sub.mH.sub.2mO(C.sub.2H.sub.4O).sub.d(C.sub.3H.sub.6O).sub.eR.sup.4. R.sup.2 represents a group shown by a general formula (3)C.sub.mH.sub.2mO (C.sub.2H.sub.4O).sub.f(C.sub.3H.sub.6O).sub.gR.sup.5; each R.sup.3 represents an organosiloxane shown by the following general formula (4). R.sup.4 represents a hydrocarbon group, or an organic group shown by R.sup.6(CO). R.sup.5 represents a hydrogen atom, a hydrocarbon group, or an organic group shown by R.sup.6(CO). R.sup.6 represents a hydrocarbon group. The siloxane branched polyether-modified silicone satisfies expressions (I), (II). Thus, this invention provides: a paint additive and a paint composition, particularly a water-based paint, with small environmental load and imparting excellent antifouling performance.

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The present invention relates to alkoxysilane-functionalized and allophanate-functionalized urethanes, methods for the preparation thereof, coating compositions comprising these and to the use thereof.

Water dispersible polyamides having carboxylic acid groups are disclosed. These are made by reacting polycarboxyl is acids or anhydrides thereof with amine containing monomer or an amide terminated polyamide under reaction conditions such that a few of the carboxylic acid groups are residual and can promote dispersion in water. These polyamides after dispersion can be chain extended to higher molecular weight polymers or can be terminally functionalized with reactive groups such as isocyanate, epoxy, vinyl, acetoacetonate, or silanol groups. Composites and hybrids of these polyamides with vinyl polymers are also disclosed and claimed.