Glue stick based on starch mixed ethers

A starch and glue stick technology, applied in the direction of glue sticks, starch-derived adhesives, adhesives, etc., to achieve the effects of outstanding adhesion and storage performance, uniform rubbing, and improved strength

Active Publication Date: 2013-10-23
HENKEL KGAA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At the same time, cellulose ethers create drawbacks in terms of the rub-on properties of the stick, as the small particles separate and the glue stick smears during use

Method used

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  • Glue stick based on starch mixed ethers
  • Glue stick based on starch mixed ethers

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0062] I. raw material

[0063] - Mixed starch ether A: hydroxypropyl carboxymethyl starch based on potato starch; molar ratio of hydroxypropyl to carboxymethyl > 1; , Its viscosity is about 70,000mPas when measured under the condition of 20rpm;

[0064] - mixed starch ether B: hydroxypropyl carboxymethyl starch based on a mixture of potato starch and tapioca starch; the molar ratio of hydroxypropyl to carboxymethyl > 1; The viscosity of the aqueous solution is about 80,000 mPas when measured under the conditions of 20°C, rotor 7, and 20 rpm;

[0065] - Mixed starch ether C: hydroxypropyl carboxymethyl starch based on potato starch; molar ratio of hydroxypropyl to carboxymethyl <1; Or its viscosity is about 5,000mPas when measured under the condition of 5, 20rpm;

[0066] - Fatty acids: commercially available fatty acids having 14 to 18 carbon atoms.

[0067] II. Manufacturing of glue sticks

[0068] The components of Table I were mixed at 80°C and processed into glue s...

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Abstract

The invention relates to a glue stick, containing an aqueous preparation of at least one hydroxyalkyl carboxymethyl starch having a viscosity less than 2,000,000 mPas, determined as a 40-wt% aqueous solution by means of a Brookfield RVT viscometer at 20°C, spindle 7.20 rpm, and soap. The invention further relates to the production of the glue stick and to the use thereof to connect substrates in a planar manner, in particular to connect paper, cardboard, wood, and / or plastic to each other.

Description

technical field [0001] The invention relates to the field of adhesives, especially glue sticks, and relates to a glue stick based on a specific mixed starch ether, a manufacturing method thereof, and an application thereof. Background technique [0002] Glue sticks (stick-shaped adhesives slidably housed within a closable sleeve and which leave a sticky film when rubbed off on a substrate surface) are ubiquitous objects in modern day-to-day life. They comprise, for example, binding water-soluble or (resp.) water-dispersible synthetic polymers, especially polyvinylpyrrolidone (PVP), dissolved in an aqueous organic liquid phase, and shape-imparting structural substances. Alkali metal or ammonium salts of aliphatic carboxylic acids, especially those having carbon atoms in the range from 12 to 22, can be used in particular as structural substances. If an aqueous formulation of an adhesive polymeric substance (which is itself highly viscous) is heated together with a small amoun...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09J103/08C09J9/00
CPCC09J103/08C09J9/005
Inventor H-P·霍夫曼M·赫尔奇贝克W-R·米勒U·诺伊豪森W·迈尔M·施里费思
Owner HENKEL KGAA
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