Abstract: The present invention is directed to the discovery that the substitution of isocyanate coupled polyols for polyols conventionally used in the art leads to flexible polyurethane foams having significantly enhanced load bearing properties. More particularly, the present invention is directed to a process for the production of a flexible polyurethane foam having improved load bearing characteristics and to the foams so produced. The present process broadly comprises reacting an organic polyisocyanate with a coupled polyol in the presence of a blowing agent, a catalyst and a foam stabilizer. The coupled polyol consists essentially of the reaction product of an organic polyisocyanate and an organic compound having a hydroxy functionality ("functionality" as used herein is intended to mean the average number of reaction groups per molecule) of greater than 2, wherein the ratio of hydroxyl groups to isocyanate groups is greater than 1.0.

Abstract: The present invention relates to a process for the production of bis(4-hydroxyphenyl)biphenyl disulfone.

Abstract: Polycarbonates are provided having improved critical thickness values based on an aromatic diphenol preferably bisphenol A and an aromatic diphenol thioether. By incorporating 2 up to 20 mole percent of the aromatic diphenol thioether based on the total diphenol content into the polymer, the critical thickness of the article molded from the polycarbonate is substantially improved.

Abstract: The present invention is directed to a process for the catalytic hydrogenation of di(4-aminophenyl)methane to a liquid di(4-aminocyclohexyl)methane containing from 15 to 40% by weight of the trans,trans isomer comprising hydrogenating di(4-aminophenyl)methane at a hydrogen pressure of at least 500 psi and at a temperature of from 100.degree. to 300.degree. C., in the presence of a ruthenium catalyst supported on an inert carrier, said catalyst being moderated with from 65 to 700% by weight, based on the weight of the ruthenium of a compound selected from the group consisting of nitrates and sulfates of alkali metals and alkaline earth metals.

Abstract: Thermoplastic molding compositions characterized by their improved impact performance and deformation under load are disclosed comprising a homogeneous, intimate blend of a polycarbonate resin and a nuclear alkylated polycarbonate resin wherein blend dispersed is a polymeric modifier.

Abstract: The present invention is directed to a blend of a polyether polyol and a polymer polyol, the blend having a solids content of from about 2 to about 15 percent by weight and the use of such blends in manufacturing polyurethane products.

Abstract: Polycarbonates are provided having improved critical thickness values and flame retardant characteristics based upon an aromatic diol and a halogenated thiodiphenol represented by the structural formula ##STR1## wherein X.sub.1 and X.sub.2 are halogen and "a"+"b"=1 to 8; Y.sub.1 and Y.sub.2 are alkyl groups having 1 to 4 carbon atoms; and "c"+"d"=0 to 7. By incorporating an effective amount of the aromatic halogenated thiodiphenol, based upon the total aromatic diol content, into the polymer the critical thickness and flame retardant characteristics of the polycarbonate are substantially improved, a process for the preparation of the monomer of said structural formula is likewise provided.

Abstract: The present invention is directed to a process for the production of polyurethane elastomer moldings by reacting a reaction mixture in a closed mold, wherein said reaction mixture comprises:(a) an organic polyisocyanate;(b) an organic active hydrogen group-containing compound having a molecular weight of from 1800 to 12,000 and containing at least two active hydrogen groups;(c) 1,3,5-triethyl-2,6-diamino benzene and, optionally(d) a catalyst for the reaction between hydroxyl groups and isocyanate groups,wherein component (c) is present in an amount of from 25 to 35 percent by weight based on the combined weight of components (b) and (c), wherein the amounts of components (a), (b) and (c) are such that the isocyanate index of the reaction mixture is from about 90 to 110, and wherein all of said components are processed via a one-shot process whereby (a) is mixed simultaneously either with (b), (c) and (d) or with a non-reacted premixture of some or all of (b), (c) and (d).

Abstract: The present invention is directed to a process for improving the storage stability of a composition containing(a) a blocked polyisocyanate component prepared by blocking the isocyanate groups of an organic polyisocyanate with a blocking agent comprising a di-C.sub.1 -C.sub.12 -alkyl and/or -alkoxyalkyl malonate and(b) a component comprising a compound containing at least two isocyanate-reactive hydrogens, which comprises incorporating a stabilizing amount of a compound having monofunctional reactivity towards isocyanates into the composition by adding said compound to component (a), component (b) or to the mixture of components (a) and (b).The present invention is also directed to the storage stable composition produced in accordance with the above process.

Abstract: The present disclosure is concerned with storage stable concentrated fluid aqueous dispersions of water soluble cold dyeing fiber reactive dyes. These dispersions contain anionic or polyvinyl dispersants to provide resistance against settling or agglomeration and water soluble electrolytes to provide resistance against hydrolysis of the fiber reactive groups. The dispersions have an average particle size of less than 100 microns and in a preferred embodiment sufficient buffering agent to stabilize the pH at between about 5 and 8.

Abstract: A process has been developed for the conditioning of certain classes of organic pigments by treatment of polyphosphoric acids.

Abstract: The invention is directed to a thermoplastic molding composition comprising alkylated polycarbonate and a dispersed polymeric phase which composition is characterized by an improved level of impact strength.

Abstract: The invention is directed to copolycarbonates of thiodiphenol characterized by high melt flow rate and good mechanical properties, particularly suitable for molding at temperatures lower than 500.degree. F.

Abstract: A copolycarbonate molding composition comprising the reaction product of an aromatic diphenol, a bis(4-hydroxyphenyl)biphenyl disulfone and a carbonate source is characterized by its high glass transition temperature. A blend thereof containing an organic acid salt is characterized by its improved flame retardance.

Abstract: A glass fiber reinforced polycarbonate composition having an improved level of impact strength and decreased notch sensitivity, comprising an aromatic polycarbonate, glass fibers and a polyanhydride resin which is a copolymer of .alpha.-olefin and maleic anhydride is provided.

Abstract: A granular flux is made by intimately mixing a particulate glass frit with carbon black. The glass frit typically employed has a particle size distribution such that substantially all of the frit material has a particle size within the range of 0.5 to 4 mm. The carbon black is included in the flux in an amount of from 1 to 10 wt. %, based on the amount of the frit used. The disclosed flux is characterized by good flowability and its ability to remain mixed during transport.

Abstract: The present invention relates to a modified polyisocyanate having improved compatibility with aliphatic hydrocarbon solvents comprising the reaction product of(a) an aliphatic biuret isocyanate having the formula ##STR1## and (b) about 0.05 to 0.5 mols per equivalent of isocyanate of an aliphatic monohydroxy alcohol having at least 8 carbon atoms.

Abstract: The present invention relates to a novel foam peeling process and apparatus. The process and apparatus allow for the substantially continuous production of a continuous sheet of foam material in roll form from a cylindrical foam body. By following the present invention, several basic operations may be performed on a foam body including inserting a supporting rod in the foam body, bringing a cutting element into contact with the foam body while it is rotating on the supporting rod, winding the resultant continuous foam sheet and returning the supporting rod back to the inserting station. The invention allows for the production of a foam roll in a substantially continuous manner with a minimum amount of labor. Furthermore, all the various operations can be controlled via suitable electrical control means, and it is preferable that all the various operations be programmed into a single control unit.

Abstract: The present invention is directed to a process for the preparation of an isocyanate-terminated prepolymer having a content of unreacted diisocyanate of less than about 2% by weight, preferably less than about 1% by weight, based on the weight of the isocyanate-terminated prepolymer, and containing internal urethane groups based on 4,4'-diisocyanato-dicyclohexyl-methane by(a) preparing an OH-terminated prepolymer from(i) a high molecular weight polyol component, and/or(ii) a low molecular weight isocyanate-reactive component, and(iii) a polyisocyanate component comprising 4,4'-diisocyanato-dicyclohexyl-methaneat an NCO/OH equivalent ratio of about 0.5:1 to 0.9:1;(b) forming the isocyanate-terminated prepolymer by reacting the OH-terminated prepolymer with a polyisocyanate other than 4,4'-diisocyanato-dicyclohexyl-methane containing aromatically-, aliphatically- and/or cycloaliphatically-bound isocyanate groups at an NCO:OH equivalent ratio, based on the free -OH groups of component (a), of about 1.

Abstract: The present invention is directed to a thermoplastic molding composition comprising thermoplastic polyurethane and a member selected from the group consisting of polyarylphosphonate and polyarylphosphonatocarbonate which composition is characterized by its improved flame retardance.