Patent Number: 6,309,740

Title: High temperature heat transfer barrier and vapor barrier and methods

Abstract: The use of a relatively tin vermiculite coating layer, preferably spray-applied as an aqueous dispersion of delaminated vermiculite platelets, over a (primary) spray-applied hydratable cementitious fireproofing coating, has been found surprisingly to provide fireproofing protection that equals or exceeds that provided by fireproofing used alone. Accordingly, the time, effort, and costs normally incurred by the need to achieve thick coating layers in conventional fireproofing are considerably decreased.

Inventors: Shu; Larry S. (Newton, MA), Cirignano; Paul (Braintree, MA)

Assignee: W. R. Grace & Co.-Conn.

International Classification: C04B 41/52 (20060101); C04B 41/45 (20060101); C04B 28/00 (20060101); C04B 14/02 (20060101); C04B 28/02 (20060101); C04B 14/20 (20060101); C09K 21/00 (20060101); C09K 21/02 (20060101); C09D 5/18 (20060101); C23C 28/00 (20060101); B27N 009/00 ()

Expiration Date: 10/30/2018