Abstract: This invention relates to a method of making a film-fabric composite (includinng a film-fabric laminate) wherein the fabric is characterized as having improved tensile elongation (without rupture). In particular, the invention pertains to a method of making a film-fabric laminate having structual elastic-like behavior wherein the fabric is a nonwoven thermally bonded fabric characterized as having improved high strain rate tensile elongation and comprises a plurality of fibers comprised of at least one polypropylene polymer and at least one ethylene polymer, wherein the method comprises stretching the laminate at a high strain rate. The improved farbic is characterized by higher high strain rate tensile properties and a broader bond window which is also shifted to substantially lower temperatures with regard to maximum tensile properties.

Abstract: Fibrous product is externally sized by applying to the material a basic aqueous dispersion of an interpolymer of an ethylenically unsaturated monomer and an ethylenically unsaturated carboxylic acid comonomer. The preferred dispersions which have lower initial viscosities provide dispersion/starch dilute solutions with higher viscosities and improved external sizing effectiveness. Resulting fibrous products are adequately sized and exhibit excellent printability and strength properties.

Abstract: The present pertains to an improved method of internally sizing a cellulosic article and an improved internally sized cellulosic article where a water-dispersible, water- and alkali-insoluble internal sizing agent from an interpolymer of an ethylenically unsaturated hydrocarbon monomer and an ethylenically unsaturated carboxylic acid comonomer is applied to fiber stock or pulp slurry some amount of time subsequent to the instance of application of a retention aid. The invention also includes a novel internal sizing composition where the interpolymer is rendered water-dispersible by reaction with an inorganic neutralizing cationic compound. The improved method is particularly well suited for paper making wherein substantially improved sizing performance is obtainable. Internal sizing agents based on inorganic neutralizing cationic compounds such as, for example, potassium hydroxide, provide the surprising advantage of hard water resistance.

Abstract: Aqueous dispersions of ethylene/.alpha.,.beta.-unsaturated carboxylic acid interpolymers (e.g., random ethylene/acrylic acid interpolymers) are formed using a mixture of bases at a concentration of at least 0.2 equivalents of base per mole of .alpha.,.beta.-unsaturated carboxylic acid. The dispersions have at least 10 weight percent dispersed solids and not more than 1 weight percent of the initial polymer in non-dispersed form. Preferred bases for use in forming the dispersions are ammonium hydroxide and/or alkali metal hydroxides. A mixture of ammonium hydroxide and potassium hydroxide is especially preferred for forming the dispersions with ethylene/acrylic acid interpolymers at an ammonium hydroxide:acrylic acid molar ratio of 1:1 and a potassium hydroxide:acrylic acid molar ratio in the range of 0.6-0.8:1. The dispersions are particularly useful in forming thin coatings of adhesive on substrates, such as paper and metal foil, using conventional techniques.

Abstract: Aqueous dispersions of ethylene/.alpha.,.beta.-unsaturated carboxylic acid interpolymers (e.g., random ethylene/acrylic acid interpolymers) are formed using a mixture of bases at a concentration of at least about 0.2 equivalents of base per mole of .alpha.,.beta.-unsaturated carboxylic acid. The dispersions have at least about 10 weight percent dispersed solids and not more than about 1 weight percent of the initial polymer in non-dispersed form. Preferred bases for use in forming the dispersions are ammonium hydroxide and/or alkali metal hydroxides. A mixture of ammonium hydroxide and potassium hydroxide is especially preferred for forming the dispersions with ethylene/acrylic acid interpolymers at an ammonium hydroxide:acrylic acid molar ratio of about 1:1 and a potassium hydroxide:acrylic acid molar ratio in the range of about 0.6-0.8:1. The dispersions are particularly useful in forming thin coatings of adhesive on substrates, such as paper and metal foil, using conventional techniques.