US 5,707,491 A · Paper strengthened with solubilized collagen and method

Abstract

A method for making a collagen strengthened cellulosic sheet by providing a cellulosic pulp slurry; adding solubilized collagen to the pulp slurry, and mixing for a time effective for interaction of the cellulosic pulp slurry and solubilized collagen; forming the interacted cellulosic pulp slurry and solubilized collagen into a sheet; and drying the sheet; also, a method for using solubilized collagen for strengthening paper by mixing the solubilized collagen with a cellulosic pulp slurry; and making a cellulosic pulp product from the mixture and drying.

Claims16

Dependent claims

A method for using soluble collagen in a paper-making process comprising the steps of:

a. reacting insoluble collagen with a proteolytic enzyme to produce a solution including soluble collagen having a number average molecular weight of above about 300,000 daltons;
b. withdrawing the soluble collagen as product;
and
c. using said soluble collagen in a paper-making process.

1 more element

Dependencies are inferred from the claim text.

Facts

Application

08/482,968Filed 7 Jun 1995 · division

Priority

16 Jun 1993

Granted

13 Jan 1998

Term ends

Not estimatedThe source records don’t support an estimate.

Classification8 codes

C07K 14/78
From animals; from humans: connective tissue peptides, e.g. collagen, elastin, laminin, fibronectin, vitronectin or cold insoluble globulin [CIG]
D21H 17/22
Of natural origin; Derivatives thereof: proteins
A61K 38/00
Medicinal preparations containing peptides
D21H 11/14
Pulp or paper, comprising cellulose or lignocellulose fibres of natural origin only: secondary fibres

Paper strengthened with solubilized collagen and method

Life of this patent

Paper strengthened with solubilized collagen and method

Life of this patent

Abstract

Claims16