Abstract: Improved aqueous emulsion vinyl acetate-ethylene (VAE) polymer adhesives for use in packaging applications and on difficult to bond surfaces such as polyethylene, poly(ethylene terephthalate), and oriented polypropylene. The VAE polymers contain about 55-80 wt % vinyl acetate, 15-45 wt % ethylene, and 0-30 wt % of one or more additional ethylenically unsaturated copolymerizable monomer, based on the total weight of monomers. Cast films of the VAE emulsion polymers of this invention should have a tensile storage modulus (test frequency of 6.28 rad/sec) within the area encompassed by the following data points: 1.times.10.sup.5 and 2.times.10.sup.7 dynes/cm.sup.2 at 23.degree. C., and 1.times.10.sup.3 and 2.times.10.sup.6 dynes/cm.sup.2 at 70.degree. C.; preferably within the area encompassed by the following data points: 1.times.10.sup.6 and 1.5.times.10.sup.7 dynes/cm.sup.2 at 23.degree. C., and 3.times.10.sup.4 and 9.times.10.sup.5 dynes/cm.sup.2 at 70.degree. C.

Abstract: A method of forming a collagenous article comprising mixing a dispersion of collagenous material with an ester of alginic acid, forming the article, and rendering the mixture sufficiently alkaline for sufficiently long to set the mixture.

Abstract: A method of preparing collagen fibre dispersions comprising treating a collagenous material such as hide corium with a solution containing an alkaline earth metal hydroxide and an alkaline earth hydroxide; coarsely dicing or mincing the collagen, and mechanically dispersing the diced or minced collagen to achieve longitudinal separation of the collagen fibres; the dicing or mincing of the collagen being controlled such that at least 95% by weight of the collagen fibres in the dispersion are retained after neutralization on a 297 micron U.S. standard sieve.