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Modified legume starch-based compound for paper finishing

A technology of bean starch and composition, applied in the field of processing paper or flat board, paper or flat board, application of bean starch in processed paper or flat board, coloring surface treatment and/or coating, can solve the problem of paste Problems such as instability and difficulty in dissolving

Inactive Publication Date: 2006-06-28
ROQUETTE FRERES SA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0053] In fact, in this case, the high content of amylose will cause serious difficulties in dissolving it with steam in the open tank, so a jet cooker has to be used.
[0054] Without the above treatment, the resulting paste is very unstable

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0097] A pea starch sample was taken, with an amylose content of 36.7%, and liquefied according to the method described in European patent application EP 0 902 037 submitted by the applicant.

[0098] A product called APF with a water fluidity (WF) equal to 75 was obtained.

[0099] Another sample of the same natural pea starch was subjected to two-step treatment, liquefaction and esterification, wherein the esterification treatment was acetylation treatment (acetyl value AV=1.8), and the product obtained in this way was called APFA, and its WF was equal to 88.

[0100] Similarly, a sample of corn starch was subjected to two-step treatment, liquefaction and acetylation (AMFA, acetyl value AV=1.9), and the product WF was equal to 78.

[0101] Another sample of the same native pea starch was subjected to two-step treatment, liquefaction and esterification, wherein the esterification treatment was cationic (nitrogen level = 0.16%, WF = 80), and the product thus obtained was calle...

Embodiment 2

[0109] Samples of different pastes containing 20% ​​MS prepared by the above method were evaluated for stability by observing the presence and / or increased amount of insoluble matter and placing each sample at high temperature (70 or 90°C) After 24 hours, the amount of insoluble matter therein was measured.

[0110] liquefaction and acetylation

[0111] From the above experimental results, it can be found that for pea starch, whether it is only liquefied or liquefied plus acetylation, it can show and prevent the biggest inconvenience in use, especially the enrichment of insoluble substances in the circuit. This property allows the paste to be stored at high temperatures.

Embodiment 3

[0113] This step is used to dilute the samples of different pastes obtained by the above method to have rheological properties suitable for coating processing.

[0114] In the second step, the diluted sample is divided into two equal parts.

[0115] One of the pastes is equally divided into six parts, which are called APF1, APFA1, AMFA1, APFC1, AMFC1 and APFR1 for direct use.

[0116] The other was added a commercial optical brightener equivalent to 20% of the amount of starch, and the six new samples obtained were called APF2, APFA2, AMFA2, APFC2, AMFC2 and APRA2.

[0117] modified starch

Powder - Control

sample

Dry solidity when coating

Mass (%MS)

pH

60°C, 100 rev / min Brinell

Viscosity (mPa.s)

APFA1

15

5.2

31

APFR1

14

7.1

44

APF1

15

7.0

70

AMFA1

15

5.3

95

APFC1

15

7.1

28

AMFC1

14

7...

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PUM

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Abstract

The present invention relates to a composition for processing paper or flat board in the paper industry, in particular by surface treatment, pigmented surface treatment and / or coating, which composition contains at least one modified soybean starch. The invention also relates to a method for processing paper or board, in particular by surface treatment, coloring surface treatment and / or coating, using at least one composition according to the invention. The present invention relates to paper or flat board produced using at least one composition according to the invention. The present invention also relates to the use of modified bean starch in processing paper or flat paper plates, especially by surface treatment, colored surface treatment and / or coating, wherein the amylose content of said bean starch is 20% ~60%, preferably less than 45%.

Description

technical field [0001] The subject of the present invention is a novel composition based on modified bean starch. [0002] The invention relates to the use of the composition in the paper industry for processing paper or flat board, in particular by surface treatment, coloring surface treatment and / or coating. [0003] The present invention also relates to a method for the use of at least one composition according to the invention for processing paper or flat board, in particular by surface treatment, coloring surface treatment and / or coating. [0004] The invention also relates to paper or flat board made with at least one composition according to the invention. [0005] The present invention finally relates to the use of modified soy starches in converted paper or flat board, in particular by surface treatment, colored surface treatment and / or coating. Background technique [0006] For the purposes of the present invention, the term "legumes" is to be understood more spe...

Claims

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Application Information

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IPC IPC(8): D21H19/54D21H17/28
CPCC08L3/02D21H17/28D21H19/54
Inventor 皮埃尔·菲利普·克拉博
Owner ROQUETTE FRERES SA
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