Aqueous reinforced rubber dispersions and their use for making latex foams
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United States of America Patent
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Apr 17, 2012
Grant Date -
Oct 26, 2006
app pub date -
Mar 31, 2006
filing date -
Apr 4, 2005
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Abstract
The present invention relates to an aqueous reinforced rubber dispersion comprising:
- a) 51 to 90 wt-% of base latex polymer particles; andb) 10 to 49 wt-% of reinforcing latex polymer particles comprising structural units of aromatic vinyl monomers and conjugated diene monomers, the reinforcing latex polymer particles having a single glass transition temperature (Tg) from −25° C. to 28° C. as measured by differential scanning calorimetry (DSC), wherebythe weight percentages are based on the total weight of polymer particles in the rubber dispersion and the base latex polymer particles have a Tg as measured by DSC that is lower than the Tg of the reinforcing latex particles, to the use of the rubber dispersion for making latex foam, to a method for making latex foam and to an article comprising the latex foam obtained from the rubber dispersion of the present invention.
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