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US 2004/0018312 A1Published application
Ambient cured coatings and coated rubber products therefrom
AssigneeLord Corporation
InventorJames R. Halladay
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AssigneeLord Corporation
InventorJames R. Halladay
Estimating the term…
The present invention provides an ambient temperature curable coating and coated articles therefrom in a rubbery, high elongation, weatherable coating composition which can be applied to flexible elastomeric substrates for a variety of purposes. Depending on the film forming polymer used in the composition, it may be used to provide resistance to ozone, oils and solvents, or the coating may be applied for the purposes of enhancing the cosmetic appearance of the substrate rubber. The curable coating mixture is a mixture of two parts, one part containing a solution of a functional film forming polymer, and the other part providing the curing component. The stability as a premixed, one-part solution is limited to up to several months. The curable film former and curing component are mixed together at an overall 4% to 25% solids content. The viscosity is less than 20,000 cps (Brookfield) such that the coating can be sprayed, brushed or dipped to form thin coatings of from 0.001-0.020 mils.
An ambient temperature curable coating which is a mixture of 2-parts and from 4% to 25% by weight solids content, and comprising, in part (A) an organic solvent, a flexible, film-forming polymer exhibiting a Tg of less than 0° C., and from 0 to 20% unsaturation and incorporated in said film forming polymer a functional group coreactive with a curing component, and in part (B) from 25 to 150 parts by weight per one hundred parts by weight of said film forming polymer, of a curing component which is a silane compound containing at least one silicone bonded group which is coreactive with said functional group on said film forming polymer, said coating in the cured state exhibiting at least 100% elongation as an unsupported film.
A method for coating a shaped elastomer article, said article optionally affixed to a shaped metal article, comprising spraying, dipping or brushing a solvent-based, room temperature curing elastomeric film forming coating to the surface of said molded elastomer article, said coating comprising a mixture of 2-parts and from 4% to 25% by weight solids content, and comprising, in part (A) an organic solvent, a flexible, film-forming polymer exhibiting a Tg of less than 0° C., and from 0 to 20% unsaturation and incorporated in said film forming polymer a functional group coreactive with a curing component, and in part (B) from 25 to 150 parts by weight per one hundred parts by weight of said film forming polymer, of a curing component which is a silane compound containing at least one silicone bonded group which is coreactive with said functional group on said film forming polymer, said coating in the cured state exhibiting at least 100% elongation as an unsupported film.
Dependencies are inferred from the claim text.