| 摘要 |
Aqueous latices adapted to forming visible light transparent, coherent polymeric films, e.g. in laminates, as protective coatings or as adhesives, comprising colloidal particles of a UV-absorbing polymer less than 5 micrometers in diameter. Useful UV-absorbing polymer include homopolymers and copolymers of vinylfunctionalized monomer of benzotriazole or benzophenone and mixtures with plasticizer and/or coalescing agent. Plasticizer and coalescing agents are useful for providing polymer with reduced glass transition temperature to facilitate coalescence of polymer particles into coherent films. Useful additives for the latices of this invention include wetting agents, surfactants, and crosslinking agents, anti-oxidants and radical scavengers. The latices of this invention are particularly useful in providing clear, thin coatings on windows, tags, labels, flooring, tents, awnings, containers and other UV-sus-ceptible substrates.
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