W. R. Grace Co.

P E Hansson

Felek Jachimowicz

The present invention is directed to cross-linked, cationic polymers having a mixture of secondary and/or tertiary alkylene amine groups and alkylene quaternary ammonium groups pendant from a substantially completely saturated hydrocarbon polymer chain and to the use of said polymers as retention and drainage aids in paper making processes.

Retention and drainage aid

A process of forming polymeric products having a high degree of pendant secondary or tertiary alkylene amino groups by contacting, in a liquid media, a hydrocarbon polymer having olefinic groups therein with a primary or secondary amine, carbon monoxide and hydrogen in the presence of a catalytic amount of a Group VIII metal compound. '

Growing community of inventors

Helsingborg, Sweden

P E Hansson