Minnesota Mining and Manufacturing Company

3m Innovative Properties Company

Raymond Senkus

Ying-Yuh Lu

Chung I Young

Leonard W Barrett

Jeffrey F Andrews

Therese A Mullin

A fluid permeable composite structure having active particulate bonded together using a pressure-sensitive adhesive (PSA) polymer microparticulate. Use of the PSA polymer microparticulate to bond the active particulate together produces a bonded structure that, unlike previously-developed active bonded structures, is flexible and therefore can be conformed into a variety of shapes. The shaped structures may be used as gaseous filters in a wide variety of respirators.

Permeable shaped structures of active particulate bonded with PSA polymer microparticulate

A pressure-sensitive adhesive polyacrylate polymer microparticulate obtainable by suspension polymerizing an aqueous mixture that comprises: (a) an acrylic acid ester of a nontertiary alcohol having 1 to 14 carbon atoms; (b) a polar monomer; (c) a styrene sulfonate salt; and (d) an amount of surfactant above the critical micelle concentration.

Pressure-sensitive adhesive polyacrylate polymer microparticulate and

Pressure-sensitive adhesive polyacrylate polymer and method of making

A method is disclosed for the prophylactic treatment of mastitis in milk-producing animals. The method comprises dipping the teats of the animal into a composition comprising a film-forming polymer latex and a water-soluble polymer thickening agent in an aqueous medium. The composition has a thixotropic value of 15 to 1200 dynes/cm.sup.2 and an upper viscosity limit of 10 poise at a shear rate of 250 sec.sup.-1.

Prophylactic treatment of mastitis

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Stillwater, MN, United States of America

Raymond Senkus