Kenneth V Anglin

US Patent:

59626186, Oct 5, 1999

Filed:

Mar 17, 1998

Appl. No.:

9/040120

Inventors:

Dudley J. Primeaux - Elgin TX
Kenneth C. Anglin - Austin TX

Assignee:

Huntsman Petrochemical Corporation - Austin TX

International Classification:

C08G 1810

US Classification:

528 61

Abstract:

Spray polyurea elastomer systems have improved adhesion to a substrate with the incorporation of a functional alkoxy silane and water. Such systems typically also include a quasi-prepolymer of an isocyanate and an active hydrogen-containing material, and at least one amine resin, and preferably an amine-terminated chain extender. The system may also benefit from the incorporation of a higher than usual proportion of 2,4'-isomer methylene diisocyanate (MDI). The viscosity of the various components, as well as various processing characteristics, may be improved by the addition of an alkylene carbonate. The spray polyurea elastomer systems of this invention also have improved abrasion and impact resistance.

US Patent:

57313970, Mar 24, 1998

Filed:

Apr 16, 1996

Appl. No.:

8/632825

Inventors:

Dudley J. Primeaux - Elgin TX
Kenneth C. Anglin - Austin TX

Assignee:

Huntman Petrochemical Corporation - Austin TX

International Classification:

C08G 1858

US Classification:

528 73

Abstract:

Spray polyurea elastomer systems have improved adhesion to a substrate with the incorporation of a functional alkoxy silane and water. Such systems typically also include a quasi-prepolymer of an isocyanate and an active hydrogen-containing material, and at least one amine resin, and preferably an amine-terminated chain extender. The system may also benefit from the incorporation of a higher than usual proportion of 2,4'-isomer methylene diisocyanate (MDI). The viscosity of the various components, as well as various processing characteristics, may be improved by the addition of an alkylene carbonate. The spray polyurea elastomer systems of this invention also have improved abrasion and impact resistance.