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Pre-polymer formulations for liquid crystal displays

  • US 7,648,645 B2
  • Filed: 11/08/2006
  • Issued: 01/19/2010
  • Est. Priority Date: 11/08/2006
  • Status: Expired due to Fees
First Claim
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1. A composition comprising:

  • a liquid crystal component,a photo polymerization initiator; and

    a polymer precursor component comprising;

    (i) 40 to 95% wt of a first monomer of structure (I)
    R1mR2pSi(X)4-m-p



    (I)wherein,R1 is a acryloxy, methacryoxy, or (meth)acryloxyalkyl;

    R2 is independently selected from hydrogen, (C1-C12)alkyl, (C6-C12)aryl, or C7-C17)arylalkyl;

    X is a hydrolysable or non-hydrolysable group;

    m is an integer from 1 to 3 and (m+p) is an integer from 1 to 3;

    (ii) 0.05 to 65% wt of one or more second monomers of structure (II)
    R3n-R4



    (II)wherein,R3 is independently selected from acryloxy or methacryloxy,R4 is (C1-C20)alkyl or (C7-C17)arylalkyl, optionally containing one or more heteroatomic substitutions independently selected from S, O, Si, or N;

    n is an integer from 1 to 4;

    (iii) 0.05 to 55% wt of a ester, urethane, or (meth)acrylate based polymer or oligomer, bearing one or more reactive (meth)acrylate groups.

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