Robert T Iwamasa, 875201 Campau Dr, Midland, MI 48640
Robert Iwamasa Phones & Addresses
5201 Campau Dr, Midland, MI 48640 989-6312877
East Lansing, MI
Work
Position:
Professional/Technical
Education
Degree:
High school graduate or higher
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Mentions for Robert T Iwamasa
Publications & IP owners
Us Patents
Polymeric Adhesion Promoter And Latexes; And Polymeric Adhesion Promoter, Epoxy Resins And Latexes Are Used To Improve Adherence Between Various Substrates
US Patent:
5569686, Oct 29, 1996
Filed:
Mar 19, 1990
Appl. No.:
7/495504
Inventors:
Ashok C. Makati - Midland MI
Charles S. Kan - Midland MI
Robert T. Iwamasa - Midland MI
Do I. Lee - Midland MI
Charles S. Kan - Midland MI
Robert T. Iwamasa - Midland MI
Do I. Lee - Midland MI
Assignee:
The Dow Chemical Company - Midland MI
International Classification:
C08K 320
US Classification:
523409
Abstract:
The adhesive of the present invention includes latexes with an adhesion promoter which is preferably polyamidoamine. The addition of the polyamidoamine improves the adhesive strength between substrates such as between two plastic films or between a plastic film and paperboard. The present invention also provides for an adhesive prepared from a latex which is neutralized with a particular base and a hydrophobic polyamidoamine having particular amine values and viscosity whereby the strength of the adhesive bond is increased in humid conditions. The present invention also provides for adhesives primarily for use in laminate structures which are exposed to highly humid conditions. The adhesive is a polymeric latex based system to which a polymeric adhesion promoter like polyamidoamine and an epoxy emulsion are added. The adhesive retains bond strength when exposed to humidity. The scope of the invention also includes laminate structures prepared with the present adhesive and other substrate layered structures which utilize the adhesive.
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