Monsheimer Rolf

TL;DR: In this article, a method for treating pelts or leather in the beamhouse, for tanning, or as an aftertreatment, which consisted of contacting said pelts and leather with an aqueous solution or dispersion of a copolymer comprising monomers of a nitrogenous ester of acrylic acid or of methacrylic acid, a further different ester, acrylic acid and methacric acid, and acrylic acid/methacoric acid, whereby portions of said copolymers are deposited in the grain layer without formation of a superficial film, was described.

TL;DR: In this article, a water-soluble elastin hydrolyzate was proposed for cosmetological use. But, the starting material was not considered and the initial pH of the enzymatic treatment was within the pH range optimum for the enzyme employed.

TL;DR: In this paper, a method for the recovery of hair from an animal hide and for concurrent opening of the hide structure using a proteolytic enzyme is described. But the method is not suitable for the handling of animals.

TL;DR: In this article, a process for the unhairing and subsequent curing of hides and skins is described, which comprises washing flayed skins and hides to remove adhering dirt, then soaking them and freeing them of hair and scud, reversing the swelling of said skin and hides and neutralizing them, and curing them with salt.

TL;DR: In this article, a method for making a water-soluble hydrolyzate of a keratinaceous starting material which comprises first subjecting said starting material to acid treatment at a pH of 2 or below and at an elevated temperature above 80° C. to effect mild hydrolysis thereof and then enzymatically degrading said acid-treated material in an aqueous bath in the presence of urea.