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Mold release composition

  • US 4,840,675 A
  • Filed: 09/26/1988
  • Issued: 06/20/1989
  • Est. Priority Date: 12/25/1981
  • Status: Expired due to Term
First Claim
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1. A process for imparting releasing property against one of synthetic resin, natural resin, rubber and formed product thereof to a mold which comprises applying to the mold a composition comprising:

  • (A) at least one of(1) a fluorine-containing urethane compound represented by the formula ##STR55## wherein Rf represents a perfluoroalkyl group having 4 to 20 carbon atoms, X represents a methylene group, --CH2 CH(A)Cm H2m --or --SO2 N(R)Ct H2t --, A represents a hydrogen atom or hydroxyl group m is an integer of 0 to 4; and

    R represents a methyl or ethyl group, t is an integer of 1 to 4, Y represents a divalent group selected from the group consisting of;

    ##STR56## and Z represents a monohydric organic group which is a residue obtained by removing one hydrogen atom from a compound of the group consisting of;

    ##STR57## ##STR58## Cn H2n+ 1OH wherein n is an integer of 1 to 7, Cn H2n+ 1O(CH2)n'"'"' OH wherein n is an integer of 1 to 4 and n'"'"' is an integer of 2 to 4, ##STR59## Cn Hn +1 NH2 wherein n is an integer of 1 to 3, ##STR60## and Cn H2n+ 1 COOH wherein n is an integer of 1 to 3, (2) a fluorine-containing urethane compound represented by the formula ##STR61## wherein Rf, X and Y are as defined above and W represents a divalent organic group which is a residue obtained by removing two hydrogen atoms from a compound selected from the group consisting of;

    HO(CH2)k OH wherein k is an integer of 2 to 6, HO(CH2)k NH2 wherein k is an integer of 2 to 6, H2 N(CH2)kNH2 wherein k in an integer of 2 to 6, ##STR62## wherein R1 and R2 are the same or different and are each a hydroxyl group or amino group and ##STR63## wherein R1 and R2 are as defined above, and (3) a fluorine-containing urethane compound represented by the formula ##STR64## wherein Rf, X and Y are as defined above, and (B) at least one of members selected from the class consisting of silicone oil, a methyl silicone varnish, wax, and a highly fluorinated organic alkyl compound or amine compound.

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