Methods and Compositions for Temporary Barrier Coatings
Methods of temporarily protecting an exterior surface of a structure, an interior hard surface, and an automobile part, including the step of applying to the surface a solution including a water-soluble polymer, and allowing the solution to dry, thereby forming a water-soluble polymer coating on the surface, is disclosed. The protective coating can thereafter be removed by washing the surface with water, such as with a power sprayer, taking with it any secondary substance which has coated it or otherwise has been bound to it.
1 . A method for providing a temporary barrier coating, comprising the step of:
applying a water-soluble polyvinyl alcohol solution to a surface of a substrate, thereby forming a protective coating at said surface top.
2 . The method of claim 1 , further including the step of allowing said solution to dry.
3 . The method of claim 2 , further including the step of contacting said solution with a secondary substance.
4 . The method of claim 2 , further including the step of removing said solution at a time after said solution dries.
5 . The method of claim 3 , further including the step of removing said solution at a time after said contact with said secondary substance.
6 . The method of claim 4 , wherein said removing comprises use of a power sprayer.
7 . The method of claim 1 , wherein said solution contains a color agent that renders the solution a different color from the surface color.
8 . The method of claim 1 , wherein said solution is applied without prior cleaning or other preparation of the surface of said substrate.
9 . A composition, comprising:
a water-soluble polyvinyl alcohol or copolymer thereof adhered to a substrate top.
10 . The composition of claim 9 , wherein said polyvinyl alcohol is partially hydrolyzed.
11 . The composition of claim 9 , wherein said polyvinyl alcohol is essentially free of crosslinking agents.
12 . The composition of claim 9 , further including a plasticizer in combination with said polyvinyl alcohol.
13 . The composition of claim 9 , further including a surfactant in combination with said polyvinyl alcohol.
14 . The composition of claim 9 , further including a tackifying agent in combination with said polyvinyl alcohol.
15 . The composition of claim 9 , further including a nanoclay or nanoscale particulate in combination with said polyvinyl alcohol.
16 . The composition of claim 10 , further including a color agent in combination with said polyvinyl alcohol.