Surface modified, U.V. stabilized, polyvinyl chloride article

Details Surface modified, U.V. stabilized, polyvinyl chloride article Surface modified, U.V. stabilized, polyvinyl chloride article

1987-07-23

1989-09-12

Bell, Janyce

Coating processes

Coating has x-ray, ultraviolet, or infrared properties

427331, 427336, 427353, 4274301, 4274342, B05B 500

Patent

active

048658804

ABSTRACT:
A surface modified, U.V. stabilized opaque polyvinyl chloride resin article and process for making same is described. The article includes a white pigment, such as titanium dioxide, in low amounts. The modified surface is substantially free of residual stabilizer and solvent, and its appearance and degree of surface perfection is substantially the same as an unmodified side of the article.
The process of the invention is characterized by the steps of immersing the polyvinyl chloride article is immersed in a suitable liquid media, then contacted with a solution of an ultraviolet light stabilizer in a suitable organic solvent, and residual stabilizer and solvent are displaced in situ, i.e. in a non-evaporative environment without contacting the air.

REFERENCES:
patent: 3043709 (1962-07-01), Amborski
patent: 3519462 (1970-07-01), Bristol et al.
Kutz, M. et al., Soc. Plast. Eng., Technical Papers, (1976), 22, pp. 511-512.

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