Abstract: This specification discloses manufacture of copolymers of alpha-methylstyrene and styrene in which the alpha-methylstyrene may range from about 50 to 90% and the softening point may range from about 60.degree. to 100.degree. C. The copolymers have especial utility with elastomers to produce pressure sensitive adhesives and the like, and in hot melt coatings.

Abstract: Disclosed are essentially stable aqueous dispersions of hydrocarbon resins which consist essentially of at least one hydrocarbon resin in finely-divided form; a water-soluble cationic resin, a specific example of which is a water-soluble cationic aminopolyamide--epichlorohydrin resin; and water. The dispersion can be used to size paper.

Abstract: Disclosed is a process for the conversion of stereoregular or crystallizable forms of polypropylene to the amorphous atactic form.

Abstract: Disclosed are novel water-insoluble, water-dispersible thermosettable cationic resins derived by reaction of a water-soluble aminopolyamide, a hydrophobizing compound such as a ketene dimer and an epihalohydrin such as epichlorohydrin. The thermosettable cationic resins are water-dispersible, and aqueous dispersions thereof are stable for prolonged periods of time at relatively high solids concentration. The thermosettable cationic resins have particular utility in the sizing of paper.

Abstract: This specification discloses manufacture of copolymers of alpha-methylstyrene and styrene in which the alpha-methylstyrene may range from about 50 to 90% and the softening point may range from about 60.degree. to 100.degree. C. The copolymers have especial utility with elastomers to produce pressure sensitive adhesives and the like, and in hot melt coatings.

Abstract: The specification discloses resinous compositions comprising copolymers of alpha methyl styrene and vinyl toluene, 95 percent by weight of said copolymers having molecular chain lengths less than 100 Angstroms. The compositions are characterized by softening points in the range of about 10 to 98.degree. C. and good solubility in paraffin wax. Processes are disclosed for preparing said compositions by copolymerizing mixtures of monomers of vinyl toluene and alpha methyl styrene in a weight ratio in the range of 2.5:1 to 4.5:1 in the presence of an acid clay catalyst.

Abstract: Disclosed is electroconductive paper adapted particularly for use in the manufacture of paper used in the electrophotographic reproduction of images.

Abstract: Disclosed are essentially stable aqueous dispersions of wax--fatty acid blends, wax-ketene dimer blends, or mixtures thereof; a water-soluble cationic resin dispersing agent; and water. The dispersions are useful in the sizing of paper.

Abstract: Disclosed are new copolymer mixtures derived from a vinyl ester, maleic anhydride, and a chain transfer agent such as tetrahydrofuran. The salts, such as the sodium salts, of these copolymer mixtures are useful as dispersants for finely divided particles such as kaolin.

Abstract: Disclosed are novel water-insoluble, water-dispersible thermosettable cationic resins derived by reaction of a diallylamine polymer, a hydrophobizing compound such as a ketene dimer and an epihalohydrin such as epichlorohydrin. The thermosettable cationic resins are water-dispersible, and aqueous dispersions thereof are stable for prolonged periods of time at relatively high solids concentration. The thermosettable cationic resins have particular utility in the sizing of paper.

Abstract: Disclosed are novel water-insoluble, water-dispersible thermosettable cationic resins derived by reaction of a water-soluble aminopolyamide, a hydrophobizing compound such as a ketene dimer and an epihalohydrin such as epichlorohydrin. The thermosettable cationic resins are water-dispersible, and aqueous dispersions thereof are stable for prolonged periods of time at relatively high solids concentration. The thermosettable cationic resins have particular utility in the sizing of paper.

Abstract: Disclosed are novel water-insoluble, water-dispersible thermosettable cationic resins derived by reaction of a water-soluble aminopolyamide, a hydrophobizing compound such as a ketone dimer and an epihalohydrin such as epichlorohydrin. The thermosettable cationic resins are water-dispersible, and aqueous dispersions thereof are stable for prolonged periods of time at relatively high solids concentration. The thermosettable cationic resins have particular utility in the sizing of paper.

Abstract: Disclosed are novel water-insoluble, water-dispersible thermosettable cationic resins derived by reaction of a water-soluble aminopolyamide, a hydrophobizing compound such as a ketene dimer and an epihalohydrin such as epichlorohydrin. The thermosettable cationic resins are water-dispersible, and aqueous dispersions thereof are stable for prolonged periods of time at relatively high solids concentration. The thermosettable cationic resins have particular utility in the sizing of paper.

Abstract: Disclosed is a method of preparing a treatment site on the bole of a conifer.

Abstract: Disclosed are novel water-insoluble, water-dispersible thermosettable cationic resins derived by reaction of a diallylamine polymer, a hydrophobizing compound such as a ketene dimer and an epihalohydrin such as epichlorohydrin. The thermosettable cationic resins are water-dispersible, and aqueous dispersions thereof are stable for prolonged periods of time at relatively high solids concentration. The thermosettable cationic resins have particular utility in the sizing of paper.

Abstract: Disclosed are essentially stable aqueous dispersions of fortified rosin which consist essentially of fortified rosin in finely-divided form; a water-soluble cationic resin, a specific example of which is a water-soluble cationic aminopolyamide--epichlorohydrin resin; and water. The fortified rosin dispersion is used to size paper.

Abstract: Disclosed are novel retention aid resins for paper fillers, said resins being derived by reaction of a nitrogen compound (such as ammonia) and a base resin which is the reaction product of an amino polymer and an epoxide difunctional toward amines. A specific example of such a base resin is a cationic water-soluble poly(diallylamine)-epihalohydrin resin.

Abstract: Disclosed are novel retention aid resins for paper fillers, said resins being derived by reaction of a nitrogen compound (such as ammonia) and a base resin which is the reaction product of an amino polymer and an epoxide difunctional toward amines. A specific example of such a base resin is a cationic water-soluble polyaminopoly-ureylene -- epihalohydrin resin.

Abstract: In the production of sized paper and board using ketene dimer as sizing agent, there is used concomitantly with the ketene dimer a cationic polyelectrolyte so as to increase the sizing effect of the ketene dimer. The cationic polyelectrolyte is normally a dye fixative selected from water-soluble dicyandiamide-formaldehyde condensates. The cationic polyelectrolyte may be mixed with the ketene dimer so as to form a novel sizing composition which is preferably used in the form of an emulsion.

Abstract: Bis-monoperoxyacetals and bis-monoperoxyketals having the formula ##EQU1## wherein R is selected from the group consisting of C.sub.4 -C.sub.12 tertiary alkyl and C.sub.9 -C.sub.12 tertiary aralkyl and R.sub.1 is selected from the group consisting of hydrogen and C.sub.1 -C.sub.12 alkyl, are effective crosslinking agents for polymers at relatively low cure temperatures.