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Treating interparticle bonded aggregates with latex to increase flexibility of porous, absorbent macrostructures

  • US 5,859,074 A
  • Filed: 05/09/1997
  • Issued: 01/12/1999
  • Est. Priority Date: 11/09/1994
  • Status: Expired due to Term
First Claim
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1. A method for imparting improved flexibility to a porous, absorbent macrostructure, said method comprising the steps of:

  • (a) treating a porous aggregate macrostructure comprising an interparticle bonded aggregate having pores interconnected by intercommunicating channels such that the macrostructure is liquid permeable with an effective amount of a latex to coat a portion of said particles of said porous aggregate macrostructure, said latex being capable of being sintered at a temperature of about 25°

    C. or lower, being at least somewhat hydrophilic when sintered, and having a Tg of about 25°

    C. or lower when sintered; and

    (b) sintering said porous aggregate macrostructure at a temperature of about 25°

    C. or lower to impart increased flexibility thereto.

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