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Process for the formation of plasticized proteinaceous materials and compositions containing the same

  • US 5,882,702 A
  • Filed: 09/24/1997
  • Issued: 03/16/1999
  • Est. Priority Date: 10/07/1996
  • Status: Expired due to Term
First Claim
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1. A method of identifying compatible proteins and plasticizers for the formation of a plasticized proteinaceous material comprisinga) selecting a protein component;

  • b) determining the solubility parameter of the protein component defined by the Formula I
    
    
    space="preserve" listing-type="equation">δ

    .sub.1.sup.2 =δ

    .sub.D1.sup.2 +δ

    .sub.P1.sup.2 +δ

    .sub.H1.sup.2 (I)whereinδ

    1 is the total solubility parameter value of the protein component;

    δ

    D1 is the solubility parameter value contributed by dispersive forces of the protein component;

    δ

    P1 is the solubility parameter value contributed by the polar forces of the protein component; and

    δ

    H1 is the solubility parameter value contributed by hydrogen bonding forces of the protein component;

    c) selecting a plasticizer component having a second solubility parameter defined by the Formula (II)
    
    
    space="preserve" listing-type="equation">δ

    .sub.2.sup.2 =δ

    .sub.D2.sup.2 +δ

    .sub.P2.sup.2 +δ

    .sub.H2.sup.2 (II)whereinδ

    2 is the total solubility parameter value of the plasticizer component;

    δ

    D2 is the solubility parameter value contributed by dispersive forces of the plasticizer component;

    δ

    P2 is the solubility parameter value contributed by the polar forces of the plasticizer component; and

    δ

    H2 is the solubility parameter value contributed by hydrogen bonding forces of the plasticizer component;

    and matching a protein component with a plasticizer component wherein at least one of the following pairs of solubility parameter values δ

    1

    2, δ

    D1

    D2, δ

    P1

    P2 and δ

    H1

    H2 are within 15% of each other.

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