Basf Se Corporation

H.b. Fuller Company

Akbar Hussaini

Glen T Cunkle

Chien Hsu

Silveiro Rodrigues

Afsaneh Nabifar

Michael Jess Antonie

Joshua Speros

A method of damping mechanical vibration includes applying on a source of mechanical vibration a formulation including an aqueous polymer emulsion prepared by an emulsion polymerization reaction of at least one emulsion-polymerizable monomer and a support resin.

Aqueous polymer emulsions for sound damping applications

An acoustic barrier includes a sound absorption material; a coating of a cured aqueous composition, the aqueous composition including an aqueous dispersion of a co-polymer comprising of monomers of two or more of an acrylate, a cyano-substituted acrylate, or styrenic; and an acrylic dispersion.

Spray applied sound barrier compositions over absorption materials

An applicator head for connection to a robotic device, and useful for applying a fluid material to a substrate. The applicator head comprises: (a) a body portion; (b) at least one material delivery system comprising an inlet, a fluid delivery cavity, and two or more passageways connecting the inlet to the fluid delivery cavity; and (c) a nozzle plate attached to the bottom surface of the body portion, and having a plurality of openings communicating with the fluid delivery cavity. In one embodiment, the applicator head comprises a nozzle inserted in each of the plurality of openings in the nozzle plate, with each nozzle adapted to apply a bead of a fluid material to a substrate, with the beads spaced less than about 2 mm apart. Also disclosed is a sound-damping composition comprising: (a) n-butyl acrylate-acrylonitrile-styrene copolymer; (b) at least about 0.5% by weight of a low-density glass bead filler; (c) at least one additional filler; and (d) at least one rheological modifier; and having a density of from about 1 to about 2 g/cc. Methods for applying the sound-damping composition by extruding it onto a substrate and baking it to exhaust water in a controlled manner, and methods for increasing the sound-damping efficacy of an aqueous polymeric composition, are also disclosed.

Sound damping compositions and methods for applying and baking same onto substrates

Growing community of inventors

Rochester Hills, MI, United States of America

Akbar Hussaini