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Structured latex core-shell polymer particles suitable for use in the preparation of composite sheets

  • US 4,666,777 A
  • Filed: 12/23/1985
  • Issued: 05/19/1987
  • Est. Priority Date: 12/23/1985
  • Status: Expired due to Fees
First Claim
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1. A structured latex polymer particle suitable for use in the preparation of a wet-laid composite sheet having good wet-end and end-use properties, said polymer particle comprising:

  • (a) from about 10 to about 40 percent of the total polymer particle volume of a core region having a Tg of from about 20°

    to about 120°

    C.; and

    (b) from about 60 to about 90 percent of the total polymer particle volume of a shell region having a Tg of from about 10°

    to about -90°

    C. and comprising a vinyl acid.

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