| 摘要 |
<p>The invention refers to the water strengthening mixture for the strengthening of aminoplastic resins that contains (A) 50 to 80 % by weight of monobasic or polybasic inorganic acid or organic acid, (B) 1 to 40 % by weight of oligoglycol and/or oligoglycolaether, (C) 1 to 20 % by weight of polyvinyl alcohol and/or partially hydrolizated polyvinyl acetate, (D) 0.1 to 1.5 % by weight of emulsifier, and (E) 0.5 to 10 % by weight of a medium for the thixotroping where the quantitative values of (A), (B), (C), (D) and (E) components are limited to the total of 100 % by weight and refer to the content of the solid substance in water mixture of the strengthening agent. The invention also refers to the use of the mixtures of the strengthening agent for the strengthening of carbamidformaldehyde resins as well as the use of the mentioned mixture in the laminating of wooden materials with foils. Finally, one aspect of the invention refers to the procedure for hot laminating of wooden materials with foils and aminoplastic resins as means for gluing.</p> |
