Epoxy coating compositions
AssigneeSwimc LLC
InventorsWeih Q. LEE, John M. BRONK, Rafael D. REYES
Life of this patent
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Abstract
A coating composition for producing high performance heat-resistant coating materials for a variety of substrates including steel and metal and non-metal substrates as well as laminate structures and self-contained substrates. The coating composition includes an epoxy resin system comprising a fluorene-structured epoxy monomers and the like, along with a crosslinker or curing agent and a catalyst or catalyst package. The coating compositions when amine-, phenyl hydroxyl-, or carboxyl-functional may also be used as crosslinkers or curing agents.
Claims20
A composition, comprising:
- a binder resin, comprising about 0.5 to 100 percent by weight of a difunctional monomer having the structure of a compound of general formula (I) or (II):
- wherein
- Ar is a C6 to C10 arylene group;
- R′ is each independently a monomeric glycidyl or epoxide having the structure
- Or a monomeric acrylate, a polymer derived from one or more acrylate monomers, and mixtures or combinations thereof,
- R′ is each independently —H, linear C1 to C4 alkyl, branched C1 to C4 alkyl, and mixtures or combinations thereof;
- a crosslinker;
- and
- a catalyst.
A crosslinking agent for an epoxy binder resin system, comprising a difunctional monomer having the structure
- wherein
- each R′ is independently —OH, NH2, —COOH, and mixtures or combinations thereof;
- and
- each R″ is independently —H or —CH3, and
- wherein the ratio of epoxy binder resin to crosslinker is about 1:1 to 5:1.
A coating composition, comprising:
- a binder resin having cured Tg of greater than about 200° C., and including about 0.5 to 100 percent by weight of a difunctional monomer having the structure of a compound of general formula (I) or (II):
- wherein
- Ar is a C6 to C10 arylene group;
- R′ is each independently a monomeric glycidyl or epoxide having the structure
- Or a monomeric acrylate, a polymer derived from one or more acrylate monomers, and mixtures or combinations thereof,
- R″ is each independently —H, linear C1 to C4 alkyl, branched C1 to C4 alkyl, and mixtures or combinations thereof;
- a crosslinker present in a ratio of 1:1 to 1:5 with respect to the binder resin;
- and
- a catalyst present in an amount of about 0.1 to 4.0 phr.
Dependencies are inferred from the claim text.