Abstract: An object of the present invention is to provide a golf ball which travels a great distance on the driver shots and stops quickly on the green on the approach shots. The present invention is directed to a golf ball material having a shear loss modulus G? of 2.11×107 Pa or less, and a ratio (E?/G?) of a tensile loss modulus E? to the shear loss modulus G? of 1.78 or more, when measuring the shear loss modulus G? in a shear mode and the tensile loss modulus E? in a tensile mode at conditions of a temperature of 0° C., oscillation frequency of 10 Hz using a dynamic viscoelasticity measuring apparatus.

Abstract: Siloxane copolymers are prepared stepwise by reacting an aminoalkyldiorganoalkoxysilane with a di- or polyisocyanate to form an alkoxysilyl-terminated urea compound, and the urea compound or its reaction product with water is subsequently reacted with a di- or polysilanol-functional polymer to form a copolymer.

Abstract: The invention relates to a process for preparing a solution that is active as a thixotropic agent and contains urea urethanes, in which monohydroxyl compounds are reacted with an excess of toluene diisocyanate, the unreacted portion of the toluene diisocyanate is removed from the reaction mixture and the monosiocyanate adduct obtained is further reacted with diarines in the presence of a lithium salt to form urea urethanes. The invention also relates to the use of the solution for imparting thixotropic properties to coating compounds.

Abstract: The invention consists of a process for separating organic monomers or auxiliaries, which are used in synthesizing organic polymers or take part in the polymerization reaction, from the prepolymer resulting from the synthesis, in which the monomers or auxiliaries are extracted from the prepolymer by means of compressed and dried carbon dioxide as solvent.

Abstract: The molecular weight, melt viscosity and melt strength of nylon 4.6 are increased by a solid phase polymerization process conducted under anhydrous conditions at temperatures below the melting point of the nylon. In a preferred embodiment, the nylon used in the process is free of surface air, has a moisture content less than 0.2 wt %, preferably less than 0.02 wt %, and more preferably less than 0.01 wt %. It is also preferred that the extractable impurities are less than 0.2 wt %, preferably less than 0.02 wt %, and more preferably less than 0.01 wt %. The nylon 4.6 product of this anhydrous process is characterized by molecular weights in excess of 50,000, melt viscosities in excess of 600 Pascal.seconds, relative viscosities in excess of 160 and degradation ratios of 7 or less.

Abstract: A bioabsorbable copolymer is obtained from the polymerization of a major amount of .epsilon.-caprolactone and a minor amount of at least one other copolymerizable monomer in the presence of an initiator possessing at least two carboxylic acid groups. The copolymer is useful, inter alia, as a coating for a surgical suture.

Abstract: Compounds of formula (I) ##STR1## wherein one of the radicals R.sup.1 or R.sup.2 is --N.dbd.C.dbd.O and the other is --NHC(O)S(CH.sub.2).sub.3 Si(OR.sup.3).sub.3, wherein R.sup.3 is C.sub.1 -C.sub.4 alkyl or phenyl, are most suitable for use as adhesion promoters for polyurethane single-component or two-component adhesives and also as primers.

Abstract: An improved antifoaming two component polyurethane adhesive comprising a first component composed of a polyisocyanate prepolymer and a second component composed of a polyol, a poly amine and a bicyclic amide acetal is described.

Abstract: This invention relates to a process for the production of polyamide imides and the use thereof as plastics materials.

Abstract: A coating resin composition consisting essentially of(A) a triazine-type resin obtained by co-condensing a triazine-type amino compound represented by the general formula ##STR1## wherein X is hydrogen, methyl, ethyl, propyl, phenyl or amino, formaldehyde and a polyol and as required, a monohydric alcohol, and(B) a polyisocyanate,the solids weight ratio of (A) to (B) being from 5:95 to 95:5.

Abstract: A method of forming a hydrophilic urethane prepolymer comprising the steps of reacting an isocyanate compound to a hydrophilic polyether or polyester compound which has been heated to such a temperature that the temperature of the reactants after addition of isocyanate is at least as high as about 120.degree. C. The resulting urethane prepolymer may be reacted with water to form a cellular urethane polymer.

Abstract: A method of forming a hydrophilic urethane prepolymer useful in consolidating aggregate material comprises the steps of adding an isocyanate compound to a hydrophilic polyether or polyester compound which has been heated to such a temperature that the temperature of the reactants after addition of isocyanate is at least as high as about 120.degree. C. The resulting urethane prepolymer may be reacted with an aqueous slurry of unconsolidated aggregate material, such as peat, to form a consolidated aggregate product, such as a plant growth-supporting rooting medium.

Abstract: A thermal dimensionally stable RIM polyurethane elastomer prepared by reacting an organic polyisocyanate, a polyoxyalkylene polyether polyol, and ethylene glycol wherein the reactants have a free-water content of less than 0.10 percent based on 100 parts of polyol plus glycol.

Abstract: The present invention relates to a process for the production of moldings based on organic polyisocyanates which have short in-mold times. The polyisocyanates are subjected to a polymerization reaction in closed molds in the presence of trimerization catalysts. The process is preferably carried out in the presence of compounds containing isocyanate-reactive groups where the equivalent ratio between NCO and NCO-reactive groups is greater than 1:0.8. The process has to be carried out in the absence of blowing agents, in order to produce nonfoamed moldings.