Inventor

PFOHL SIGBERG

DE11 patents

Patents

11 patents

US4774285ASep 27, 1988

Preparation of water-soluble copolymers containing vinylamine units, and their use as wet strength agents and dry strength agents for paper

BASF AG109 citations97

US4978427ADec 18, 1990

Water-soluble copolymers containing vinylamine units as wet strength and dry strength agent for paper

BASF AG53 citations96

US4880497ANov 14, 1989

Preparation of water-soluble copolymers containing vinylamine units, and their use as wet strength agents and dry strength agents for paper

BASF AG86 citations96

US4818341AApr 4, 1989

Production of paper and paperboard of high dry strength

BASF AG50 citations92

US5131981AJul 21, 1992

Coloring paper

BASF AG21 citations81

US4804387AFeb 14, 1989

Liquid black dye mixture

BASF AG7 citations73

US3996246ADec 7, 1976

Resolution of racemic pantolactone

BASF AG11 citations73

US4294873AOct 13, 1981

Manufacture of paper having a high dry strength and a low wet strength

BASF AG11 citations72

US4191692AMar 4, 1980

Manufacture of tocopherol

BASF AG11 citations70

US4784724ANov 15, 1988

Making paper which has a high dry strength

BASF AG5 citations62

US4081477AMar 28, 1978

Pinane derivatives

BASF AG3 citations62