Compositions – Preservative agents – Anti-oxidants or chemical change inhibitants
Patent
1990-05-24
1991-12-10
Kyle, Deborah L.
Compositions
Preservative agents
Anti-oxidants or chemical change inhibitants
252384, 427160, B05D 500
Patent
active
050715925
ABSTRACT:
An improvement in the process of incorporating a modifier ingredient into the surface region of a resinous article is described herein. The basic process includes immersing the article in a liquid such as water and contacting the immersed article with a solution of a modifier ingredient in a solvent which is immiscible with the liquid. The improvement herein comprises removing a substantial amount of air dissolved in the water layer to prevent droplets of solution from rising to the surface of the water layer during the process, thereby preventing solid modifier material from accumulating on the water surface.
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Katz et al., "Ultraviolet Protection of Transparent PVC Sheets by Diffusion Coatings", Div. Org. Coatings & Plastics, 36(1), pp. 202-206 (1976).
Conrad Neal D.
Silbermann Joseph
Fee Valerie
Kyle Deborah L.
M&T Chemicals Inc.
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