Patents Represented by Attorney William F. Parry

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  • Process for the production of cold hardening foams containing urethane groups by in-mold foaming
    Patent number: 4038221
    Abstract: This invention relates to a process for the making of cold-hardening foams containing urethane groups by in-mold foaming. The need to use a relatively large number of additives like emulsifiers, stabilizers and activators can be eliminated by using certain silicon compounds of a specific formula. Foamable reaction mixtures using these compounds with polyethers, polyisocyanates, water and/or organic blowing agents, and catalysts will produce foams with properties acceptable for use in upholstery, cars, and furniture.
    Type: Grant
    Filed: November 17, 1975
    Date of Patent: July 26, 1977
    Assignee: Bayer Aktiengesellschaft
    Inventors: Johan Bernhard Koster, Hans Joachim Meiners, Hans Heinrich Moretto