| 摘要 |
An aqueous primer composition containing a polyvinyl alcohol-stabilized aqueous phenolic resin dispersion, a latex of a halogenated polyolefin, and a metal oxide. The phenolic resin dispersion is prep ared by mixing (a) a pre-formed, solid, substantially water-insolube, phenolic resin; (b) water; (c) an organic coupling solvent; and (d) polyvinyl alcohol, at a temperature and for a period of time sufficient to form a dispersion of said phenolic resin in w ater. The aqueous primer composition substantially reduces the utilization of organic solvents, is resistant to pre-bake conditions , and provides for a robust adhesive bond which is flexible and resistant to adverse environments.
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