Premark Rwp Holdings, Inc.

Wilsonart International

Wilsoart International, Inc.

John James Ach

Kenneth Pechal

Daniel Charles Purvis, Ii

John Paul Jones

Daniel C Purvis Ii

The present invention relates to a very high solid content contact adhesive (VHS) which has a higher solid content than previously thought attainable in the prior art without increasing the viscosity beyond operable levels. Additionally, the present invention provides a VHS application device which allows substantially more uniform application of the VHS than was previously attainable.

Very high solid content aerosol delivery system

This invention concerns very high solid content aerosol adhesives and an aerosol spray device for the application of such aerosols comprising a spray can, a valve mounted to the can, a button mounted to the valve to control its opening and closing, a nozzle comprising a throughbore in fluid communication with the can interior when the valve is open. The nozzle comprises an axial throughbore, a flow restrictor being a channel having a length and a rectangularly-shaped cross section, and an exit port comprising a substantially rectangular orifice and a pair of opposing horizontal and a pair of opposing vertical walls extending and flaring outward from the orifice in the direction of the spray flow. This invention provides a very high solid content contact adhesive and an application device which provides for a substantially more uniform application of the adhesive than previously attainable.

Polychloroprene contact adhesive is made by mixing polychloroprene, tackifier, metallic oxide, antioxidants and organic solvent. The contact adhesive is sheared for reducing its ASTM D 1084 Saybolt viscosity by 10 percent or more. Shearing improves the sprayability of the polychloroprene contact adhesive. It makes it more uniform and reduces its viscosity.

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Temple, TX, United States of America

John James Ach