Production of thin walled hollow polyurethane articles and polyurethane coatings on substrates
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United States of America Patent
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Jul 21, 1992
Grant Date -
N/A
app pub date -
Aug 14, 1990
filing date -
Aug 18, 1989
priority date (Note) -
Expired
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Abstract
A process for making thin walled hollow polymeric articles or for forming a polymeric coating on a substrate, comprises contacting a suitably shaped former on a substrate to be coated with a solution of an amine-terminated prepolymer having a functionality of at least 2 in an organic solvent to form a coating on the former or substrate, drying the coating on the former or substrate, then contacting the coating on the former or substrate with a solution of a polyfunctional curing agent which is capable of reacting with the amino end groups of the prepolymer to cause chain extension and/or cross-linking of the latter.
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