Shaped collagen material prepn. - by pretreating collagen contg. skin with aldehyde to reduce isoelectric point

摘要

Shaped collagen (I) materials are pretreated by contacting comminuted skin with an aldehyde (II) such that the isoelectric point of (I) in the skin is reduced to a pH less than 6.0. (II) is pref. formaldehyde, acetaldehyde, aerol, glyoxal, glutaraldehyde, dialdehyde-dextrin or dialdehyde-starch. (I) has high tear strength and can be used for fibres, films, edible food prods. and non-woven fabrics.