1
Paul Boerzel, Klaus Bronstert, Friedrich Hovemann: Polyisobutenes. BASF Aktiengesellschaft, Keil & Witherspoon, May 1, 1979: US04152499 (206 worldwide citation)

Isobutene polymers having a mean degree of polymerization P of from 10 to 100 and a proportion E of double bonds, capable of reaction with maleic anhydride, of from 60 to 90%, where E=100% corresponds to the calculated theoretical value for the case where each molecule of the isobutene polymer conta ...


2
Richard Hoene, Heinz Hilmar Bankowsky, Eduard Hartmann, Hans Uwe Schenck, Paul Boerzel: Copolymers, having a uniform structure, of cyclic dienes and their use. BASF Aktiengesellschaft, Keil Thompson & Shurtleff, November 21, 1978: US04126739 (6 worldwide citation)

Copolymers, having a uniform structure, of cyclic dienes are obtained by heating a mixture of from 35 to 96% by weight of cyclopentadiene, dicyclopentadiene and/or methyldicyclopentadiene, which may or may not be partially replaced by methylcyclopentadiene or tricyclopentadiene or methyltricyclopent ...


3
Udo Reiter, Hans Josef Oslowski, Paul Boerzel: Preparation of polyamidoimide coatings having a long shelf life. BASF Aktiengesellschaft, Keil & Weinkauf, April 26, 1988: US04740576 (2 worldwide citation)

Polyamidoimide coatings having a long shelf life are prepared by a process in which a tricarboxylic anhydride, some of which may have been replaced by tetracarboxylic dianhydrides or dicarboxylic acids, is reacted with a polyisocyanate possessing 2 or more isocyanate groups in an organic solvent whi ...


4
Paul Boerzel, Peter Freyberg, Norbert Greif, Rudi Widder: Dispersant for textile dyeing and optical brightening. BASF Aktiengesellschaft, Keil & Witherspoon, October 21, 1980: US04229174 (1 worldwide citation)

A process for dyeing textile materials, containing natural and/or synthetic fibers, in an aqueous liquor by means of dyes which are sparingly soluble or insoluble in water, in the presence of dyeing assistants, wherein the dispersant used is a water-soluble sulfonic acid which is derived from a rand ...