Rudolph J Angelo

41806140, Dec 25, 1979

Dec 16, 1977

5/861567

Rudolph J. Angelo - Wilmington DE
Richard N. Blomberg - Wilmington DE
Fritz P. Boettcher - Newark DE
Richard M. Ikeda - Chadds Ford PA
Michael R. Samuels - Newark DE

E. I. Du Pont de Nemours and Company - Wilmington DE

B32B 2734
B32B 2728
B32B 2736
B32B 2708

428336

Films, sheets or foils are given a gas-barrier coating of an aromatic polyamide, polyimide, polyamide-imide, polyhydrazide, polyamide-hydrazide, or polyazomethine by direct vapor-phase condensation polymerization of their respective monomers. The monomers are introduced in an inert diluent gas, mixed and reacted in the presence of the surface to be coated. The surface is maintained above the critical minimum deposition temperature of the monomers but below about 300. degree. C. The coating is formed to a thickness between about 0. 1 and 0. 6 mil.

41044380, Aug 1, 1978

Nov 12, 1975

5/630996

Rudolph John Angelo - Wilmington DE
Richard Nelson Blomberg - Wilmington DE
Fritz Peter Boettcher - Newark DE
Richard Masayoshi Ikeda - Chadds Ford PA
Michael Robert Samuels - Newark DE

E. I. Du Pont de Nemours and Company - Wilmington DE

B32B 2734

428332

Films, sheets or foils are given a gas-barrier coating of an aromatic polyamide, polyimide, polyamide-imide, polyhydrazide, polyamide-hydrazide, or polyazomethine by direct vapor-phase condensation polymerization of their respective monomers. The monomers are introduced in an inert diluent gas, mixed and reacted in the presence of the surface to be coated. The surface is maintained above the critical minimum deposition temperature of the monomers but below about 300. degree. C. The coating is formed to a thickness between about 0. 1 and 0. 6 mil.