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Borax-free starch adhesive compositions

A technology of starch glue and composition, applied in the directions of starch adhesive, inorganic compound addition, material mixture addition, etc., can solve problems such as chemical structure or formula not being disclosed, etc.

Inactive Publication Date: 2015-02-18
KURITA WATER INDUSTRIES LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But unfortunately, the chemical structure or formula of this adhesive has not been disclosed, only a safety data sheet without any chemical properties

Method used

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  • Borax-free starch adhesive compositions
  • Borax-free starch adhesive compositions

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0045] Example 1 : starch glue manufactured from the following components:

[0046] 300 parts water

[0047] 20 parts raw wheat starch

[0048] 8 parts solid sodium aluminate containing 53 / 55% by weight Al 2 o 3 , stirred at 1100 rpm for 25 min at 48 °C

[0049] 600 parts water

[0050] 250 parts raw wheat starch

[0051] 6 parts sodium aluminate containing 53 / 55% by weight Al 2 o 3 , stirred at 1100 rpm for 20 min at 30 °C

[0052] Its pH is 12.5.

[0053] Final viscosity of starch glue: 1170mPas (Brookfield, LV spindle kit, spindle 3,30upm)

Embodiment 2

[0054] Example 2 : starch glue manufactured from the following components:

[0055] 500 parts water

[0056] 400 parts yellow dextrin

[0057] 25 parts sodium aluminate containing 53 / 55% by weight Al 2 o 3 , dispersed at 1100 rpm for 30 min at 48 °C

[0058] Its pH is 12.5.

[0059] Final viscosity of starch glue: 900mPas (Brookfield, LV shaft kit, shaft 330upm)

Embodiment 3

[0060] Example 3 : starch glue manufactured from the following components:

[0061] 500 parts water

[0062] 80 parts sodium aluminate solution, 19% Al 2 o 3 ,30 minutes

[0063] 400 parts of yellow dextrin, dispersed at 1100 rpm at 48°C

[0064] Its pH is 12.5.

[0065] Final viscosity of starch glue: 950mPas (Brookfield, LV spindle kit, spindle 3,30upm)

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Abstract

#CMT# # / CMT# Use of solid sodium aluminate with sodium oxide / alumina ratio of 1-1.5, alumina content of 53-55% and a particle size distribution of 0.1-1 mm, where the amount of solid sodium aluminate is 1-35, preferably 2-10 wt.% with respect to starch portion, or an aqueous sodium aluminate solution with a solid content of 10-45 wt.% based on starch portion, sodium oxide / alumina ratio of 1.5-1.5 and alumina content of 5-25 wt.%, as component in borax-free starch glue for paper and corrugated cardboard production, is claimed. #CMT#USE : # / CMT# The solid sodium aluminate or aqueous sodium aluminate solution is useful as component in borax-free starch glue for paper and corrugated cardboard production (claimed). #CMT#ADVANTAGE : # / CMT# Sodium aluminate exhibits good solubility in water. #CMT#EXAMPLE : # / CMT# No suitable example given.

Description

Background technique [0001] Adhesives containing starch and dextrins play an important role in a wide range of industries, especially in the packaging industry. Starches and dextrins are used to glue packaging paper and corrugated board when they are manufactured. In addition, other porous substrates are glued with these adhesives. [0002] Starches and dextrins are also very inexpensive raw materials, readily available and often used as aqueous dispersions, since they are available both cold and hot in special formulations. Apart from this, starch and dextrin are used in the form of powder dissolved in water to form a relatively viscous paste. Eventually, they harden as moisture is lost. [0003] Although starch and dextrin have been used as adhesives for a very long time, these natural adhesives cannot be 100% replaced by synthetic products for several reasons: [0004] √ They are easy to source [0005] √ They are cheap [0006] √ They are stable in quality [0007] ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09J103/02D21H17/28
CPCC09J11/04C08K3/22D21H17/28C08L3/02C09J103/02D21H27/10D21H21/16C08K2003/2227D21H17/66D21H17/74
Inventor 迈克尔·诺伊曼
Owner KURITA WATER INDUSTRIES LTD
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