Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – At least one aryl ring which is part of a fused or bridged...
Patent
1991-02-19
1992-09-15
Schofer, Joseph L.
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
At least one aryl ring which is part of a fused or bridged...
526330, C08L 3306, C08F21808, C08F22012
Patent
active
051479249
ABSTRACT:
The present invention relates to a composition for depositing a temporary, selectively soluble protective coating onto a substrate and a process for using the same. The composition consists essentially of a copolymer consisting of 35 to 85 weight percent vinyl acetate and from 15 to 65 weight percent of a predefined monoalkyl maleate which is dispersed in a solvent/vehicle. The protective coatings deposited therefrom are substantially impervious to aqueous media having acidic or neutral pH and provide an effective barrier against damage to the substrate's surface. At the desired time, the protective coating can be removed from the substrate by dissolution in an aqueous alkaline solution.
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Sagl Dennis
Vratsanos Menas S.
Air Products and Chemicals Inc.
Cheng Wu C.
Gourley Keith D.
Marsh William F.
Schofer Joseph L.
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