摘要:
In the process of tanning for the production of dressed fur skins comprising subjecting pickled fur skins to the action of an aqueous liquor containing tanning agents, the improvement which comprises adding to the pickling bath as sole tanning agent a water-insoluble aluminosilicate, containing bound water, of the formula(Cat.sub.2/n O).sub.x .Al.sub.2 O.sub.3.(SiO.sub.2).sub.ywherein Cat represents a cation selected from the group consisting of alkali metals, bivalent metal ions, trivalent metal ions and mixtures thereof; n represents an integer from 1 to 3; or x is a number of from 0.5 to 1.8; and y is a number of from 0.8 to 50, said aluminosilicates having an average particle size in the range of from 0.1.mu. to 5 mm and a calcium binding power of from 0 to 200 mg CaO/gm of anhydrous active substance measured at 22.degree. C. according to the Calcium Binding Power Test Method.
摘要:
In the process of washing and cleaning rawhides and fur skins before tanning comprising subjecting rawhides and fur skins to the action of an aqueous solution containing (1) surface-active compounds selected from the group consisting of anionic surface-active compounds, nonionic surface-active compounds and mixtures thereof, (2) emulsifiable solvents for fats and (3) electrolytes, removing said aqueous solution, rinsing, and recovering washed and cleaned rawhides and fur skins, the improvement consisting essentially of employing a fine-particulate, water-insoluble alkali metal aluminosilicate, containing bound water, of the formula(M.sub.2 O).sub.x.Al.sub.2 O.sub.3.(SiO.sub.2).sub.ywherein M represents an alkali metal, x is an integer from 0.7 to 1.5 and y is an integer from 0.8 to 6, said aluminosilicates having an average particle size in the range of from 0.1 to 25.mu. and a calcium binding power of from 20 to 200 mg CaO/gm of anhydrous active substance measured at 22.degree. C. according to the Calcium Binding Power Test Method set out in the specification, as partial or total replacement of said electrolyte and optionally partial replacement of said surface-active compounds, whereby the pH of said aqueous solution is maintained between 6.5 and 8.5.
摘要翻译:在鞣制前洗涤和清洁生皮和毛皮的过程包括使生皮和毛皮受到含有(1)选自阴离子表面活性化合物,非离子表面活性化合物的表面活性化合物的水溶液的作用 化合物及其混合物,(2)脂肪的乳化溶剂和(3)电解质,去除所述水溶液,漂洗和回收洗涤和清洁的生皮和皮毛皮,改进主要包括使用细颗粒的水不溶性碱 含有结合水的金属硅铝酸盐,其具有式(M 2 O)x.Al 2 O 3(SiO 2)y,其中M表示碱金属,x是0.7至1.5的整数,y是0.8至6的整数,所述铝硅酸盐具有 根据钙结合力,平均粒度在0.1至25μm的范围内,钙结合力为20至200mg CaO / gm的无水活性物质在22℃下测量 在本说明书中列出的测试方法,作为部分或全部替代所述电解质和任选地部分替代所述表面活性化合物,由此所述水溶液的pH保持在6.5至8.5之间。
摘要:
In the process of tanning for the production of leather comprising subjecting pickled uncured hides to the action of an aqueous liquor containing(1) chemical tanning or pretanning agents, and(2) auxiliary chemicals to tanning and recovering leather, the improvement consisting essentially of employing a water-insoluble aluminosilicate, containing bound water, of theformula(Cat.sub.2/n O).sub.x.Al.sub.2 O.sub.3.(SiO.sub.2).sub.ywherein Cat represents a cation selected from the group consisting of alkali metals, bivalent metal ions, trivalent metal ions and mixtures thereof, n represents an integer from 1 to 3 of the valence of the cation, x is an integer from 0.5 to 1.8 and y is an integer from 0.8 to 50, said aluminosilicates having an average particle size in the range of 0.1.mu. to 5 mm and a calcium binding power of from 0 to 200 mg CaO/gm of anhydrous active substance measured at 22.degree. C. according to the Calcium Binding Power Test Method set out in the specification, as partial replacement of said chemical tanning or pretanning agents and said auxiliary chemicals to tanning.
摘要翻译:在制造皮革的鞣制过程中,包括将腌制的未固化的皮革用于含有(1)化学鞣制或预鞣剂的含水液体的作用,和(2)辅助化学品来鞣制和回收皮革,其改进主要包括采用 含有结合水的式(Cat2 / nO)x.Al2O3。(SiO2)y的水不溶性硅铝酸盐,其中Cat代表选自碱金属,二价金属离子,三价金属离子及其混合物的阳离子 ,n表示阳离子价数的1〜3的整数,x表示0.5〜1.8的整数,y表示0.8〜50的整数,所述铝硅酸盐的平均粒径为0.1〜5mm 根据本说明书中列出的钙结合力测试方法,在22℃下测定的0〜200mg CaO / gm无水活性物质的钙结合力作为所述化学品t的部分置换 安宁或预制剂和所述辅助化学品进行鞣制。
摘要:
In an improved process of tanning for the production of leather comprising subjecting pickled uncured hides to the action of an aqueous liquor containing (1) chemical tanning or pretanning agents and (2) auxiliary chemicals to tanning and recovering leather, the improvement consisting essentially of employing (i) a water-insoluble aluminosilicate, containing bound water, of the formula(Cat.sub.2/n O).sub.x.Al.sub.2 O.sub.3.(SiO.sub.2).sub.ywherein Cat represents a cation selected from the group consisting of alkali metals, bivalent metal ions, trivalent metal ions, and mixtures thereof; n represents an integer of from 1 to 3; x is a number of from 0.5 to 1.8; and y is a number of from 0.8 to 50, said aluminosilicates having an average particle size in the range of from about 0.1.mu. to 5 mm and a calcium binding power of from about 0 to 200 mg CaO/gm of anhydrous active substance measured at 22.degree. C. according to the Calcium Binding Power Test Method, and (ii) carboxylic acids having at least two carboxyl groups and containing ester groups and/or urethane groups and/or amide groups, said carboxylic acids having a molecular weight of from about 200 to 30,000 and being water-soluble or water-dispersible, as partial replacement of said chemical tanning or pretanning agents and said auxiliary chemicals to tanning.
摘要:
In the process of tanning for the production of leather comprising subjecting uncured hides to the action of an aqueous liquor containing (1) chemical tanning agents, and (2) auxiliary chemicals to tanning and recovering leather, the improvement consisting of essentially of employing water-insoluble aluminosilicate, containing bound water of the formula(Cat.sub.2/n O).sub.x.Al.sub.2 O.sub.3.(SiO.sub.2).sub.ywherein Cat represents a cation selected from the group consisting of alkali metals, bivalent metal ions, trivalent metal ions, and mixtures thereof, n represents an integer from 1 to 3 of the valence of said cation, x is an integer from 0.5 to 1.8 and y is an integer from 0.8 to 50, said aluminosilicates having an average particle size in the range of 0.1.mu. to 5 mm and a calcium binding power of from 0 to 200 mg CaO/gm of anhydrous active substance measured at 22.degree. C. according to the Calcium Binding Power Test Method set out in the specification, in combination with a polycarboxylate selected from the group consisting of aliphatic dicarboxylic acids having from 2 to 8 carbon atoms, aliphatic tricarboxylate acids having from 4 to 8 carbon atoms, benzene dicarboxylic acids, benzenetricarboxylic acids and hydrolyzable partial esters thereof with aliphatic alcohols having from 1 to 6 carbon atoms and 1 to 6 hydroxyl groups as partial replacement of said chemical tanning agents and said auxiliary chemicals to tanning.
摘要:
The present invention concerns a process for the softening of furs while at the same time taking the greatest possible care of the appearance of the hair. The process of this invention comprises contacting a fur with an acid aqueous liquor containing an acid protease from a fungus strain of the genus Rhizopus rhizopodiformis, said acid protease being effective in the pH range of from about 2.5 to 6.5.