KR920004666A - Paper composition and preparation method thereof - Google Patents

Abstract

A mixture of polymers derived from degradation of a polysaccharide derivative is used during the paper-making process as a means of strengthening the paper and as a dewatering agent. Paper is either coated or impregnated with a mixture of the polymers.

Description

Paper composition and preparation method thereof

As this is a public information case, the full text was not included.

1 is a tensile strength curve of Whatman No. 1 filter paper treated with carboxymethylcellulose hydrolyzate,

2 is a saddle strength curve of Whatman No. 1 filter paper treated with distilled water,

3 is the tensile strength curve of untreated Whatman No. 1 filter paper.

Claims (65)

A paper product treated with decomposition products of polysaccharide derivatives containing oligomeric mixtures of polysaccharide derivatives, wherein most of the oligomers have a degree of polymerization for which the oligomers form a rod-like configuration. The paper product of claim 1, wherein the degradation product consists essentially of the oligomer mixture. The method of claim 1, wherein the polysaccharide derivative is a cellulose derivative, starch derivative, carrageenan, pullulan, fusutlan, alginate, laminarin, laminarin, guar gum gum, gum arabic, inulin, pectin, whelan, rhamsan, gellan, xanthan, scleroglucan, juglan, methyllan, chitin, Paper product selected from the group consisting of cyclodextrin and chitosan. The compound of claim 1 wherein the substituents of the polysaccharide are carboxymethyl, hydroxymethylethyl, methyl, hydroxypropyl, amino, methylethyl, hydroxyethyl, hydroxypropylmethyl, hydroxypropylethyl, sulfates, carboxylic acids, carboxylic esters and A paper product wherein at least one substituent in the fibrate group is selected. The paper product of claim 1, wherein the polysaccharide derivative is a cellulose derivative or a starch derivative. 6. The cellulose derivative of claim 5 wherein the cellulose derivative is from the group consisting of carboxymethyl cellulose, ethylmethyl cellulose, hydroxypropyl ethyl cellulose, methyl cellulose, hydroxypropyl cellulose, hydroxypropylmethyl cellulose, hydroxymethylethyl cellulose and mixtures thereof. Selected paper products. The paper product of claim 6 wherein the cellulose derivative is carboxymethyl cellulose. 8. The paper product of claim 7, wherein the oligomer mixture has an average molecular weight of about 15,000 Daltons or less. The method of claim 1, wherein the oligomer mixture has a molecular weight distribution having a polyisperslty index of about 2 or less, and the degradation product is a species containing less than 25% (wt%) of monosaccharides, disaccharides or mixtures thereof. product. 10. The paper product of claim 9, wherein the degradation product contains less than 10% monosaccharides, disaccharides, or mixtures thereof. A method of indicating the strength of a paper by treating with a decomposition product of a polysaccharide derivative containing an oligomer mixture of a polysaccharide derivative, wherein the majority oligomer has a degree of polymerization in which a rod-like structure is formed. The method of claim 11, wherein the paper is treated with an additive selected from dyes, colorants, wetting-intensity enhancers, and foam inhibitors. The method of claim 11, wherein in the processing, the paper is coated by a method selected from dipping, spraying, rolling or mixing. (a) pumping the fibers; (b) purifying the paper stock; (c) make this sheet; And (d) a paper manufacturing method for dyeing paper sheets, wherein the paper is treated with a decomposition product of a polysaccharide derivative containing an oligomer mixture of polysaccharide derivatives, the majority of the oligomers having a degree of polymerization in which the oligomers form rod-like structures. Improved manufacturing method improved to have. 15. The process of claim 14 wherein the polysaccharide derivative in the treating step is a cellulose derivative, starch derivative, carrageenan, pullulan, fusutlan, alginate, laminarin, guar. Guar gum, gum arabic, inulin, pectin, whelan, rhamsan, gellan, xanthan, scleroglucan, zuglan, zooglan, methyllan , Chitin, cyclodextrin and chitosan. 15. The process of claim 14, wherein, in the course of the treatment, the substituents of the polysaccharide are carboxymethyl, hydroxymethylethyl, methyl, amino, hydroxypropyl, methylethyl, hydroxyethyl, hydroxypropylmethyl, hydroxypropylethyl, sulphate, At least one selected from the group of carboxylic acids, carboxylic acid esters, and pyruvate salts. The method of claim 14, wherein the treating step is an impregnating process. The manufacturing method according to claim 14, wherein the treating step is a coating process. The method of claim 18, wherein the coating process is a dapping, spraying, rolling or mixing process. The method of claim 14, wherein the polysaccharide derivative is a cellulose derivative. 21. The cellulose derivative of claim 20 wherein the cellulose derivative is from the group consisting of carboxymethyl cellulose, ethylmethyl cellulose, hardypropylpropyl cellulose, methyl cellulose, hydroxypropyl cellulose, hydroxypropylmethyl cellulose, hydroxymethylethyl cellulose and mixtures thereof Selected manufacturing method. The method of claim 21, wherein the cellulose derivative is carboxymethyl cellulose. The method of claim 22, wherein the oligomer mixture has an average molecular weight of about 15,000 Daltons or less. 15. The preparation according to claim 14, wherein the oligomer mixture has a molecular weight distribution having a polyisperslty index of about 2 or less, and the degradation product contains 25% (wt%) of monosaccharides, disaccharides or mixtures thereof. Way. The method of claim 24, wherein the degradation product contains less than 10% monosaccharides, disaccharides, or mixtures thereof. A process for increasing the dehydration of a paper product by treating the paper with a decomposition product of the polysaccharide derivative containing an oligomer mixture of the polysaccharide derivative, wherein the majority oligomer has a degree of polymerization in which a rod-like structure is formed. 27. The method of claim 26, wherein the paper is treated with an additive selected from dyes, colorants, wetting-strength increasing agents and foam inhibitors. 27. The process of claim 26 wherein the polysaccharide derivative in the processing step is a cellulose derivative, starch derivative, carrageenan, pullulan, pustulan, alginate, laminarin, guar gum. (guar gum), gum arabic, inulin, pectin, whelan, rhamsan, gellan, xanthan, scleroglucan, zugran, zooglan, methyllan, A process selected from the group consisting of chitin, cyclodextrin and chitosan. 27. The process of claim 26, wherein, in the course of the treatment, the substituents of the polysaccharide are carboxymethyl, hydroxymethylethyl methyl, amino hydroxypropyl, methylethyl, hydroxyethyl, hardy propylpropyl, hydroxypropylethyl, sulfate, carboxylic acid, carboxylic acid. At least one selected from the ester and pyruvate groups. The method of claim 26, wherein the oligomer mixture and the furnish are combined during the treatment. 27. The method of claim 26, wherein the paper product is selected from pulp, finished paper, textile products, and other cellulose based products. A product based on a cellulose selected from the group consisting of debit products and structural materials treated with decomposition products of polysaccharides containing oligomeric mixtures of polysaccharides, with the majority of these oligomers having a molecular weight such that the oligomers form rod-like structures. . Paper product treated with paper with a decomposition product of a polysaccharide derivative containing an oligomer mixture of a polysaccharide derivative having a Nacl concentration of about 0.005 N to 0.5 N and at least 1.2 Mark-Houwink exponent. 34. The method of claim 33, wherein the polysaccharide derivative is selected from the group consisting of cellulose derivatives, starch derivatives, carrageenan, pullulan, fusutlan, alginate, laminarin, guar gum. gum, gum arabic, inulin, pectin, whelan, rhamsan, gellan, xanthan, scleroglucan, juglan, methyllan, chitin, Paper product selected from the group consisting of cyclodextrin and chitosan. The substituent of claim 33, wherein the substituents of the polysaccharide are carboxymethyl, hydroxymethylethyl, methyl, amino, hydroxypropyl, methylethyl, hydrosethyl, hydroxypropyl, hydroxypropylethyl, sulfates, carboxylic acids, carboxylic esters and pyruvic acid Paper product wherein at least one selected from the salt group. The paper product of claim 33, wherein the polysaccharide is a cellulose derivative. 37. The cellulose derivative of claim 36 wherein the cellulose derivative is from the group consisting of carboxymethyl cellulose, ethylmethyl cellulose, hydroxypropylmethyl cellulose, methyl cellulose, hydroxypropyl cellulose, hydroxypropylmethyl cellulose, hydroxymethylethyl cellulose and mixtures thereof. Selected paper products. 38. The paper product of claim 37, wherein the cellulose derivative is carboxymethylcellulose. The paper product of claim 38, wherein the oligomer mixture has an average molecular weight of about 15,000 Daltons or less. 34. The method of claim 33, wherein the oligomer mixture has a molecular weight distribution having a polyisperslty index of about 2 or less, and the degradation product is a species containing less than 25% (wt%) of monosaccharides, disaccharides or mixtures thereof. product. 41. The paper product of claim 40 wherein the degradation product contains less than 10% of monosaccharides, disaccharides, or mixtures thereof. A process for increasing paper strength by treating paper with a decomposition product of a polysaccharide derivative containing an oligomer mixture of a polysaccharide derivative having a Nacl concentration of about 0.005 N -0.5 N and a Mark-Hopuwink exponent of at least 1.2. 43. The method of claim 42, wherein the paper is treated with an additive selected from dyes, colorants, wetting-strength increasing agents and foam inhibitors. 43. The method of claim 42, wherein the coating process in the treating step comprises dipping, spraying, rolling or mixing. (a) making the fibers into pulp; (b) purifying the paper stock; (c) making paper sheets; And (d) a method of making paper for dyeing paper sheets, wherein the paper is treated with a degradation product of a polysaccharide derivative containing the oligomer mixture of a polysaccharide derivative, the majority of said oligomer being at least at a Nacl concentration of about 0.005 N-0. An improved process for the paper treatment of decomposition products of polysaccharide derivatives containing oligomeric mixtures of polysaccharide derivatives having a Mark-Houwink exponent of 1.2. 46. The process of claim 45, wherein the polysaccharide derivative is selected from the group consisting of cellulose derivatives, starch derivatives, carrageenan, pullulan, fusutlan, alginate, laminarin, guar. Guar gum, gum arabic, inulin, pectin, whelan, rhamsan, gellan, xanthan, scleroglucan, zuglan, zooglan, methyllan , Chitin, cyclodextrin and chitosan. The substituent of claim 45 wherein the substituent of the polysaccharide is carboxymethyl, hydroxymethylethyl, methyl, amino, hydroxypropyl, methylethyl, hydroxyethyl, hydroxypropylmethyl, hydroxypropylmethyl, hydroxypropylethyl, sulfate, At least one selected from the group of carboxylic acids, carboxylic acid esters, and pyruvate salts. 46. The method of claim 45, wherein the treating step is an impregmating process. 51. The method of claim 50, wherein the treating step is a coating process. 41. The method of claim 40, wherein the coating process is a dapping, spraying, rolling or mixing process. 46. The method of claim 45, wherein the oligomer mixture has a molecular weight distribution having a polydisperslty index of about 2 or less, and the degradation product is a species containing less than 25% (wt%) of monosaccharides, disaccharides or mixtures thereof. Manufacturing method. 52. The process according to claim 51, wherein the degradation product contains 10% or less of monosaccharides, disaccharides or mixtures thereof. 46. The paper product of claim 45, wherein the cellulose derivative is carboxymethylcellulose. The paper product of claim 53, wherein the oligomer mixture has an average molecular weight of about 15,000 Daltons or less. A process for increasing paper dehydration by treating a paper with a decomposition product of a polysaccharide derivative containing an oligomer mixture of a polysaccharide derivative having a Nacl concentration of about 0.005 N-0.5 N and a Mark-Hopuwink exponent of at least 1.2. 56. The method of claim 55, wherein the paper is treated with at least one selected additive from dyes, colorants, wetting-strength increasing agents and foam inhibitors. 56. The process of claim 55 wherein the polysaccharide derivative is selected from the group consisting of cellulose derivatives, starch derivatives, carrageenan, pullulan, pustranlan, alginate, laminarin, guar gum. (guar gum), gum arabic, inulin, pectin, whelan, rhamsan, gellan, xanthan, scleroglucan, zugran, zooglan, methyllan, A method of preparation selected from the group consisting of chitin, cyclodextrin chitosan. The substituent of claim 55 wherein the substituents of the polysaccharide are carboxymethyl, hydroxymethylethyl, methyl, amino, hydroxypropyl, methylethyl, hydroxyethyl, hydroxypropylmethyl, hydroxypropylethyl, sulfates, carboxylic acids, carboxylic esters and At least one selected from the group pyruvate. 56. The method of claim 55, wherein the oligomer mixture and finish are combined during processing. The method of claim 55, wherein the paper product is selected from pulp, finished paper, textile product, and other cellulose based products. Fabric product treated with paper with decomposition products of polysaccharide derivatives containing oligomer mixtures of polysaccharide derivatives having a Nacl concentration of about 0.005 N-0.5 N with a Mark-Hopuwink exponent of at least 1.2. A paper product treated with a decomposition product of a polysaccharide containing an oligomer mixture, wherein the majority of said oligomer mixture has a degree of polymerization of about 3-500. 63. The polysaccharide derivative of claim 62, wherein the polysaccharide derivative is a cellulose derivative, starch derivative, carrageenan, pullulan, pustulan, alginate, laminarin, guar gum ), Gum arabic, inulin, pectin, whelan, rhamsan, gellan, xanthan, scleroglucan, zooglan, methyllan, chitin, cyclone Paper product selected from the group consisting of dextrin and chitosan. 63. The method of claim 62, wherein the substituents of the polysaccharide are selected from the group consisting of carboxymethyl, hydroxymethylethyl, methylethyl, amino, hydroxypropyl methylethyl, hydroxyethyl, hydroxypropylmethyl, hydroxypropylethyl, sulfates, carboxylic esters and avir Paper product of at least one selected from the acid groups. 63. The paper product of claim 62, wherein the polysaccharide is a cellulose derivative. ※ Note: This is to be disclosed by the original application.