Robert M. Lapierre - Sterling MA Nicholas J. Leonardi - North Andover MA
Assignee:
Enron Chemical Company - Rolling Meadows IL
International Classification:
C08J 906 C08J 907
US Classification:
521 85
Abstract:
A method of making a foam injection molded article is disclosed wherein corrosion of the mold element is significantly reduced or substantially eliminated. The method comprises dispersing effective amounts of a primary chemical blowing agent of sodium borohydride and an activation system of sodium bicarbonate/citric acid mix into a polymer resin to form a mixture. The mixture is then heated whereby the activation system releases water and the sodium borohydride reacts with the water to produce hydrogen gas. The mixture is subsequently injected into a mold to obtain expansion of the polymer resin to form the foam article. The invention also comprehends a corresponding chemical blowing agent composition.
Robert M. Lapierre - Sterling MA Nicholas J. Leonardi - North Andover MA
Assignee:
Enron Chemical Company - Cincinnati OH
International Classification:
C08J 906 C08J 908
US Classification:
264 54
Abstract:
A method of making a foam injection molded article is disclosed wherein corrosion of the mold element is significantly reduced or substantially eliminated. The method comprises dispersing effective amounts of a primary chemical blowing agent of sodium borohydride and an activation system of sodium bicarbonate/citric acid mix into a polymer resin to form a mixture. The mixture is then heated whereby the activation system releases water and the sodium borohydride reacts with the water to produce hydrogen gas. The mixture is subsequently injected into a mold to obtain expansion of the polymer resin to form the foam article. The invention also comprehends a corresponding chemical blowing agent composition.
Courtney Preuss, Khristina Mikhaylishin, Hafza Madeen, John Chapman, Julka L, Mark Curran, Thomas Keating, James Ashey, Dave Turner, Cait Mika, Shane Quinones, William Mcclain