| 摘要 |
<p>Aqueous dispersions of acrylic polymers which do not release formaldehyde, comprising the following components: a) from 25 % to 95 % by weight of one or more polymerizable acrylic monomers whose corresponding homopolymer has a Tg of less than 0 °C; b) from 4 % to 70 % by weight of one or more polymerizable acrylic monomers whose corresponding homopolymer has a Tg of greater than 0 °C; c) from 0.05 % to 4 % by weight of one or more monomers containing at least two ethylenic unsaturations; d) from 0.2 % to 5 % by weight of a vinylsilane having the formula: CH2=CR-Si(OR')nRm e) from 0.2 % to 10 % by weight of an ethylenically unsaturated monomer containing one or more acid groups; the sum of the components a) + b) + c) + d) + e) being 100 %.</p> |
