W. R. Grace Co.

Per E Hansson

Felek Jachimowicz

A product formed by reacting a polymeric polyamidoamine with a low molecular weight polyamine under reactions conditions to cause transamidation and then further reacting the transamidation product with a compound which is polyfunctional with respect to amino groups present in the transamidation product. The resultant material is useful in paper making processes as a retention and drainage aid.

Water soluble polyamidoaminepolyamine having weight average molecular

A process and product formed therefrom for imparting wet strength to cellulosic sheet materials by incorporating into the materials a polymeric product having the structural characterization of a substantially completely saturated hydrocarbon polymer chain with pendant secondary and/or tertiary alkylene amine groups and alkylene quaternary ammonium groups.

Wet strength material

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.

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Columbia, MD, United States of America

Per E Hansson