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Powder type white emulsion and preparation method thereof

A white latex and powder technology, applied in adhesives, adhesive types, starch adhesives, etc., can solve the problems of formaldehyde residue, unstable storage, high production cost, low production cost, stable storage, and reduced packaging. The effect of shipping costs

Active Publication Date: 2013-12-25
CHONGQING JIANGBEI GONGNONG CHEM CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] Aiming at the defects of poor water resistance, high production cost, unstable storage and residual formaldehyde in current liquid white latex, the present invention proposes a powder-type white latex that can be quickly dissolved in cold water to form a white emulsion-like glue, which can replace the traditional liquid white latex

Method used

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  • Powder type white emulsion and preparation method thereof
  • Powder type white emulsion and preparation method thereof
  • Powder type white emulsion and preparation method thereof

Examples

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Effect test

Embodiment 1

[0038] 1) Add 65 parts by weight of plantain taro raw starch with 75% linear structure, 15 parts by weight of polyurethane-acrylate rubber powder, and 0.5 parts by weight of medium-temperature α-amylase into the double-cone mixer. Stir and activate for 30 minutes at temperature and speed of 200 rpm;

[0039] 2) Add 2 parts by weight of sodium tripolyphosphate, 1 part by weight of citric acid, and 5 parts by weight of polyethylene oxide (molecular weight: 80,000) into step 1), and stir at a high speed of 500 rpm for 5 minutes to obtain pre-reaction materials;

[0040] 3) Send the pre-reactant obtained in step 2) into a high-speed rotary impact machine, use a water bath to control the temperature at 50-80°C, and perform a cross-linking reaction for 10 minutes at a rotary speed of 1200 rpm;

[0041] 4) Add 3 parts by weight of calcium sulfate and 0.5 parts by weight of polysilane-based defoamer to step 3), continue to react for 2 minutes and discharge to obtain powder-type white...

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Abstract

The invention discloses powder type white emulsion and a preparation method thereof, and particularly provides the powder type white emulsion which can be quickly resolved in cold water, form white emulsion type glue solution and can substitute traditional liquid white emulsion. The powder type white emulsion comprises the following raw materials: by weight, 65-80 parts of amylose, 10-25 parts of polyurethane rubber powder, 3-8 parts of water resistant modifiers, 3-5 parts of quick drying agents, 0.5-1 part of alpha-amylase, 1-2 parts of cross-linking agents, 0.5-1 part of catalyst, and 0.5-1 part of defoamer. The preparation method of the powder type white emulsion comprises the steps of utilizing alpha-amylase to activate the interface polar group of amylose and the interface polar group of polyurethane rubber powder in a dry powder state, and making amylose to be in cross-linking reaction with polyurethane rubber powder through mechanochemistry under the action of cross-linking agents and catalyst. Consequently, preparing the powder type white emulsion which can be quickly resolved in cold water is further prepared.

Description

technical field [0001] The invention relates to the field of adhesives, in particular to a powder-type white emulsion capable of rapidly dissolving in water to form a white emulsion glue and a preparation method thereof. Background technique [0002] The existing white latex is a water-soluble adhesive, which is a thermoplastic emulsion adhesive prepared by adding other auxiliary agents after polymerization of vinyl acetate monomer under the action of an initiator. It has excellent properties such as curing at room temperature, strong adhesion, wide bonding range, and not easy to age, so it is widely used in printing and binding and furniture manufacturing. It can also be used as an adhesive for paper, wood, cloth, leather, ceramics, etc. As a modifier of adhesives such as phenolic resin and urea-formaldehyde resin, it is used in the manufacture of polyvinyl acetate latex paint, etc. But at the same time, the existing white latex is a milky liquid, which not only has high r...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09J103/02C09J175/14C09J11/08C09J11/04
Inventor 陈庆曾军堂李兴文
Owner CHONGQING JIANGBEI GONGNONG CHEM CO LTD
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