Annette F Katona

US Patent:

51243725, Jun 23, 1992

Filed:

Nov 15, 1990

Appl. No.:

7/614959

Inventors:

Annette F. Katona - Richmond Heights OH
Steve L. Hannah - Chagrin Falls OH

Assignee:

Tremco Incorporated - Cleveland OH

International Classification:

C08K 900

US Classification:

523200

Abstract:

A non-sag agent useful in providing non-sag properties to many conventional curable, polymeric adhesives and sealants, said agent comprising: a first component comprising crush resistant coated particles wherein the first component particles are less than about 1 and 1/2 microns in size and have a coating of about 0. 1% to about 10% by weight of the particle and wherein said coating substantially comprises a first surface modifying agent, a second component comprising crush resistant coated particles wherein the second component particles are about 1 and 1/2 to about 3 microns in size and have a coating of about 0. 1% to about 10% by weight of the particle and wherein said coating substantially comprises a second surface modifying agent, said second surface modifying agent being the same or different from said first surface modifying agent, a third component comprising substantially inert crush resistant particles wherein the particle size is about 4 to about 100 microns, said agent comprising about 25-65 weight percent first component, about 5-25 weight percent second component and about 25-65 weight percent third component.