Patents by Inventor Hendrikus Alouisius Antonius VAN Aalten

Hendrikus Alouisius Antonius VAN Aalten has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Anionic polyurethanes
    Patent number: 4096127
    Abstract: A process is provided for making an anionic polyurethane wherein a monomeric, aliphatic, dihydroxyl compound having an aliphatic substituent containing at least 10 carbon atoms is reacted with an organic polyisocyanate to form an adduct having terminal NCO groups, and the resulting adduct is reacted with an aliphatic monomeric diol chain extender containing an acid group which is capable of salt formation or a salt group. If the chain extender contains an acid group, the chain extended polyurethane is reacted with a basic compound to form a salt. The product of the invention may be used to size paper.
    Type: Grant
    Filed: December 4, 1975
    Date of Patent: June 20, 1978
    Assignee: Akzona Incorporated
    Inventors: Horst Schurmann, Josef Bung, Hendrikus Alouisius Antonius VAN Aalten