Oxide-reduction method for prepn. of emulsion polymer with low monomer content
A technology for polymers and monomers, applied in the field of redox preparation of emulsion polymers with low residual monomer content, can solve problems such as less effective, lower total volatile organic compound content, lower content and the like
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Embodiment 1
[0058] The reduction of embodiment 1 residual monomer
[0059] The procedure of Comparative Example A was followed except that erythorbic acid was replaced by 0.23 g of 2-hydroxy-2-sulfinylacetic acid (50% by weight sodium salt of sulfinate; 0.0011 moles of reducing agent).
Embodiment 2
[0060] The reduction of embodiment 2 residual monomer
[0061] The procedure of Example 1 was followed except that 2 ppm copper (as a 0.1% solution in copper nitrate hemipentahydrate) was added to the emulsion polymer before the oxidizer and reducer additions began.
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