Process for introducing useful additives into already manufactured and fabricated flexible vinyl products

A process that can be employed in the field for introducing a special function additive selected from the group of substances consisting of UV stabilizers, mildewcides, fragrances, germicides, insecticides, antioxidants, water repellents, anti-fogging agents, biocides, fungicides, thickeners, lubricants, disinfectants, surfactants, bacteriacides, vinyl heat stabilizers, antistats, release agents, and antiblocking agents into an already manufactured and fabricated vinyl film, vinyl sheet, or vinyl coated fabric which process comprises:

• (1) spreading on the vinyl surface at ambient temperature a uniform coating of a solution consisting of
• A. a permanent, plasticizer carrier liquid which
• (a) has a vapor pressure less than 150 mm Hg at 200.degree. C.,
• (b) has a solubility parameter between 7.7 and 12.5 (calories/cc.).times.0.5,
• (c) has an absorption time less than 10 days at room temperature,
• (d) has a viscosity measured at 20.degree. C. which is less than 79 cp., and
• (e) does not physically or chemically attack flexible polyvinyl chloride products, and
• B. a special function additive which
• (a) imparts to the vinyl some property that it did not possess before,
• (b) is soluble at least to the extent of 0.001 pphr in the plasticizer at 4.degree. C.,
• (c) does not at a minimum concentration of 0.001 pphr increase the absorption time of the plasticizer solution to greater than 30 days at room temperature;
• and
• (2) said vinyl surface to remain undisturbed at ambient temperature until the plasticizer solution has been absorbed into the interior of said vinyl.