Primer coating compositions comprising polyalkyleneimine and cellulose-acetate propionate
coating compositions comprising polyalkyleneimine and cellulose acetate propionate in solution, and related process and product, are disclosed. Such compositions are particularly useful as primer coatings for substrates of regenerated cellulose, paper and paperboard where cellulose ester top coatings are used. Use of such compositions as primer coatings improves adhesion of the top coating to the substrate, particularly where the coated substrate is heat-sealed, for example, in packaging applications. Also, the coating composition provides increased resistance to blocking, which is especially important where the substrate is sheet material wound in a roll.
Description
Patent History
Patent number: T975003
Type: Grant
Filed: Nov 7, 1977
Date of Patent: Oct 3, 1978
Inventors: Don R. Leonard (Kingsport, TN), Charles H. Coney (Kingsport, TN)
Application Number: 5/849,376
Type: Grant
Filed: Nov 7, 1977
Date of Patent: Oct 3, 1978
Inventors: Don R. Leonard (Kingsport, TN), Charles H. Coney (Kingsport, TN)
Application Number: 5/849,376
Classifications
Current U.S. Class:
427/407R;
260/13;
427/407D;
Applying Superposed Coatings Or Coating A Coated Base (427/118);
Wood Base (427/408);
Paper Base (427/411);
Cellulosic Coating (427/415);
428/476;
Regenerated Or Modified Cellulose (428/508)
International Classification: B05D 710; B32B 2108; B32B 2710;
International Classification: B05D 710; B32B 2108; B32B 2710;
