Biological latex used for papermaking and preparation method thereof

A bio-latex and bio-glue technology, applied in the field of coatings, can solve the problems of poor ink absorption performance and paper brittleness, and achieve the effects of improving coating performance, improving toughness and mechanical properties, and reducing the number of hydroxyl groups

Inactive Publication Date: 2019-02-15
FOSHAN SENANG BIO TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The technical problem to be solved by the present invention is to provide a kind of biological latex for papermaking and its preparation method in view of the problems that the current biological latex will make the paper brittle and have poor ink absorption performance.

Method used

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  • Biological latex used for papermaking and preparation method thereof

Examples

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preparation example Construction

[0023] The preparation method of biological glue base material is:

[0024] (1) Take waxy corn starch and add sodium acetate buffer solution with pH 5.0 according to the mass ratio of 1~4:10~15, stir and mix for 20~30min, heat up to 50~55℃ and keep it for 20~30min to obtain the mixture, take glucose starch The enzyme is mixed with α-amylase at a mass ratio of 3~5:1~3 to obtain a mixed enzyme, and the mixture is added with a mixed enzyme at a mass ratio of 80~100:1~4, enzymatically hydrolyzed at 45~55°C for 10~15 hours, and extinguished For enzymes, first adjust the pH to 8.5-9, stir and mix for 30-50 minutes, then adjust the pH to 7-7.2, filter, take the filter cake to dry, crush through a 100-mesh sieve, and collect the sieved particles;

[0025] (2) Take the sieved particles and add deionized water according to the mass ratio of 2~5:8~10, raise the temperature to 45~50℃, add anhydrous sodium sulfate with 4~7% of the sieved particles, keep it warm for 5~10min, adjust pH to 8...

Embodiment 1

[0034] The preparation method of biological glue base material is:

[0035] (1) Take waxy corn starch and add pH5.0 sodium acetate buffer at a mass ratio of 1:10, stir and mix for 20 minutes, heat up to 50°C and keep it for 20 minutes to obtain a mixture, take glucoamylase and add α- Mix amylase to obtain a mixed enzyme, take the mixture and add the mixed enzyme at a mass ratio of 80:1, enzymolyze at 45°C for 10 hours, inactivate the enzyme, first adjust the pH to 8.5, stir and mix for 30 minutes, then adjust the pH to 7, filter, and filter The cake is dried, crushed and passed through a 100-mesh sieve, and the sieved particles are collected;

[0036] (2) Take the sieved particles and add deionized water at a mass ratio of 2:8, heat up to 45°C, add anhydrous sodium sulfate with 4% of the sieved particles, keep warm for 5 minutes, adjust the pH to 8, and then add deionized water 10% hexamethyldisilazane, keep it at pH 5.0 and 45°C for 2 hours, filter, take the filter cake a, w...

Embodiment 2

[0045] The preparation method of biological glue base material is:

[0046] (1) Take waxy corn starch and add pH5.0 sodium acetate buffer solution at a mass ratio of 4:15, stir and mix for 30 minutes, heat up to 55°C and keep warm for 30 minutes to obtain a mixture, take glucoamylase at a mass ratio of 5:3 and add α- Mix amylase to obtain a mixed enzyme, take the mixture and add the mixed enzyme at a mass ratio of 100:4, enzymolyze at 55°C for 15 hours, inactivate the enzyme, first adjust the pH to 9, stir and mix for 50 minutes, then adjust the pH to 7.2, filter, and filter The cake is dried, crushed and passed through a 100-mesh sieve, and the sieved particles are collected;

[0047] (2) Take the sieved particles and add deionized water at a mass ratio of 5:10, raise the temperature to 50°C, add anhydrous sodium sulfate with 7% of the sieved particles, keep it warm for 10 minutes, adjust the pH to 9, and then add deionized water 15% hexamethyldisilazane, heat at pH 5.0, 50°...

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Abstract

The invention discloses biological latex used for papermaking and a preparation method thereof, and belongs to the field of coatings. Glutinous rice starch is taken as a raw material, the characteristic that cyanogroup on the surface of the starch is easy to react with organosilane is used, the quantity of surface hydroxyl groups is reduced, the hydrophobic property is strengthened, and the waterresistance after the biological latex is used for paper surface is improved; the starch after hydrophobic modification is added into environmentally-friendly triethyl citrate and glycerol to be mixedfor carrying out plasticized modification, so that the coating performance of a base material is improved, simultaneously, the addition of a part of petroleum base latex can be replaced, the resourcesare saved, and the purpose of environmental protection is achieved; tetraethoxysilane is taken as a raw material, the toughening improvement performance of the latex is improved, the biological latexis unlikely to embrittle after drying, and the mechanical property of the coating is improved; 1,2-benzisothiazoline-3-one and ammonia water are added for forming a conservation activator for the biological latex, so that the performance of the latex is improved, the latex is prevented from losing efficacy, and the biological latex has an anti-aging effect. The biological latex solves the problemthat paper becomes embrittled and low in ink absorbency after the biological latex is used at present.

Description

technical field [0001] The invention relates to the field of coatings, in particular to a biological latex for papermaking and a preparation method thereof. Background technique [0002] As people's requirements for paper quality are increasing day by day, more and more paper-making enterprises choose to use coating to improve paper quality. As one of the main components of paper coating, latex plays a decisive role in the quality of coating and paper. However, latex as a petroleum-based product, with the increasing shortage of petroleum resources and the growing awareness of people's environmental protection, more and more paper-making companies and paper-making chemical companies have begun to study renewable environmentally friendly adhesives to replace the current petroleum cracking products. Petroleum-based latex synthesized from butadiene and styrene as the main monomers. At present, most coated paper companies choose to increase the amount of coated starch to reduce ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D21H19/40D21H19/58D21H19/62D21H19/54D21H19/44D21H19/52D21H19/64D21H19/46D21H21/16D21H21/14D21H21/18D21H21/36D21H21/30B41M5/52C08B31/00
CPCB41M5/52C08B31/00D21H19/40D21H19/44D21H19/46D21H19/52D21H19/54D21H19/58D21H19/62D21H19/64D21H21/14D21H21/143D21H21/16D21H21/18D21H21/30D21H21/36B41M5/5218B41M5/5254B41M5/5263B41M5/529B41M5/5227
Inventor 胡次兵路芸卢星
Owner FOSHAN SENANG BIO TECH CO LTD
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