FIELD: chemistry.
SUBSTANCE: present invention relates to a method of producing an adhesive intended for use in different industries, particularly production of wood boards. The method of producing a stable soya/urea adhesive composition includes dispersing soya flour in water, denaturing the solution with an acid at pH 2.0-4.5 for at least 1 minute and contacting the denatured soya flour with urea with high adhesive power. The method may further include adding a crosslinking agent, diluent or both agents to the soya flour/urea adhesive or adding an emulsified or dispersed polymer.
EFFECT: disclosed adhesives and dispersions, obtained according to the method disclosed herein, are characterised by improved properties such as high stability and adhesive power in a wet and dry state, a more efficient production method and low cost of the product.
18 cl, 20 tbl, 5 dwg, 24 ex
| Title | Year | Author | Number |
|---|---|---|---|
| LOW pH SOYA FLOUR UREA-FREE DILUENT AND METHODS OF MAKING SAME | 2012 |
|
RU2606620C2 |
| STABLE ADHESIVES FROM UREA-DENATURED SOYA FLOUR | 2007 |
|
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| ADHESIVE COMPOSITIONS CONTAINING CROSS-LINKING AGENT | 2008 |
|
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| PROTEIN-BEARING ADHESIVES, PRODUCTION AND USE THEREOF | 2011 |
|
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|
RU2575466C2 |
| MEAT PRODUCT (VARIANTS) | 2001 |
|
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| ADHESIVE COMPOSITIONS | 2011 |
|
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| ADHESIVE ADDITIVE | 2012 |
|
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| COMPOSITIONS, INCLUDING PROTEIN AND CATIONIC POLYMER, AND POSSESSING LOWER VISCOSITY | 2009 |
|
RU2523314C2 |
| PROTEIN-CONTAINING ADHESIVES, THEIR PRODUCTION AND APPLICATION | 2012 |
|
RU2621798C2 |
