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Liquid crystal display and photopolymerizable sealant therefor

  • US 4,401,537 A
  • Filed: 07/02/1981
  • Issued: 08/30/1983
  • Est. Priority Date: 12/26/1978
  • Status: Expired due to Fees
First Claim
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1. A photopolymerizable, adhesive, sealant composition comprising:

  • (a) cationically polymerizable epoxide with a functionality of at least 1, and(b) an organic aromatic onium catalyst comprising an aromatic adduct of(1) a diaromatic, triaromatic, or tetraaromatic organoatomic cation of a Group Va, VIa, or VIIa atom and(2) an anion;

    said onium catalyst being represented by the formula;

    ##STR5## wherein R2 is an aromatic group at least as electron withdrawing as benzene,R1 is an alkyl or alkenyl group,A is a Group Va, VIa, or VIIa atom,X is an anion,n is a positive whole integer of at least 2 up to the valence of A plus one,a is 0 or a positive whole integer up to the valence of A minus one, andn plus a is equal to the valence of A plus one and wherein at least two of said R2 groups are bonded to A, and(c) an adhesion-aiding amount of glycidoxypropyl triethoxy silane or its precondensate.

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