Patent ID: 6066368
Filing Date: 2000-05-23
Classification: C09D,Y10T

Abstract:
A process for preparing a moisture vapor coated substrate comprising:a) providing a moisture vapor barrier coating composition comprising a latex of discrete particles of starch and hydrophobic plasticizer suspended in water wherein:i) the starch is a starch ester having 2 to 8 carbon atoms in the ester component and a degree of substitution (DS) of 1.1 to 2.2; andii) the hydrophobic plasticizer is a non-volatile, polar organic material that is compatible with the starch ester and is present in sufficient amount to lower the Tg of the starch ester to a temperature of about 75 to 200.degree. C.;b) applying the coating composition to a substrate; andc) heating the coated substrate to a temperature at or above the Tg of the starch ester to melt the particles and form a continuous film.