Method of preparation of electrooptical elements

Claim 2

A process for the preparation of transparent electroconductive coatings on a polymeric substrate comprises the steps of: (A) contacting said substrate with a liquid solution of a phenolic compound and a chlorinated aliphatic compound; (B) removing the phenolic compound from the surface of the substrate; (C) subjecting the substrate to phosphorus sesquisulfide to deposit phosphorus sesquisulfide in the surface thereof; (D) contacting the phosphorus sesquisulfide treated surface with a solution of a metal salt or complex thereof to form a metal-phosphorus-sulfur coating thereon, wherein the metal is selected from the groups IB, IIB, IVB, VB, VIB, VIIB and VIII of the Periodic Table.

Claim 3

A process according to claim 1 wherein step (A) comprises contacting the substrate with a solution of a phenolic compound and a chlorinated aliphatic compound wherein the volume ratio of phenolic compound:chlorinated aliphatic compound is between about 20:40 and about 65:40.

Claim 4

A process according to claim 2 wherein step (B) comprises contacting the substrate with a chlorinated aliphatic compound that is a solvent for the phenolic compound of step (A).

Claim 5

A process according to claim 3 wherein the solution of step (A) is maintained at a temperature of about 40° to about 65° Celsius.

Claim 6

A process according to claim 4 wherein the phenolic compound is phenol.

Claim 7

A process according to claim 5 wherein the chlorinated aliphatic compound of step (A) is perchloroethylene.

Claim 8

A process according to claim 6 wherein the chlorinated aliphatic compound of step (B) is perchloroethylene.

Claim 9

A process according to claim 7 wherein the perchloroethylene of step (B) is maintained at a temperature of about 35° to about 65° Celsius.

Claim 10

A process according to claim 7 wherein step (C) comprises contacting the substrate with a solution of about 0.1 to about 1.5 weight percent of phosphorus sesquisulfide, based on the weight of solution.

Claim 11

A process according to claim 9 wherein the metal salt or complex is a copper salt.

Claim 12

A process according to claim 9 wherein the polymeric substrate comprises polyethylene terephthalate.

Claim 13

A process according to claim 11 wherein the polyethylene terephthalate substrate having a metal-phosphorus-sulfur coating thereon is thereafter subjected to electrolytic plating to deposit a ferromagnetic coating thereon.

Claim 14

A process according to claim 9 wherein the polymeric substrate is polyethylene terephthalate having a coating of an acrylate polymer on at least a portion of the surface thereof.

Claim 15

A process according to claim 9 wherein the polymeric substrate having a metal-phosphorus-sulfur coating thereon is thereafter subjected to a noble metal salt solution to effect deposition of the noble metal thereon.

Claim 16

A process according to claim 9 wherein the polymeric substrate having a metal-phosphorus-sulfur coating thereon is thereafter subjected to electrolytic plating.

Claim 17

A process for the preparation of a transparent electroductive polyethylene terephthalate material comprising the steps of: (A) contacting a polyethylene terephthalate film with a solution of phenol and perchloroethylene maintained at a temperature of about 40° to about 65° C., for a period of about three to about eight minutes, the volume ratio of phenol:perchloroethylene in the solution being between about 20:40 to about 65:40; (B) removing phenol from the surface of the film by contacting with perchloroethylene solvent at a temperature of about 35° to about 65° Celsius for a period of about 0.5 to about 2.0 minutes; (C) subjecting the film surface to solution of about 0.1 to about 1.5 weight percent of phosphorus sesquisulfide in perchloroethylene for a period of about one minute to about ten minutes at a temperature of about 20° to about 40° Celsius to deposit phosphorus sesquisulfide at the surface; and (D) subjecting the phosphorus sesquisulfide treated surface to a solution of a metal salt or complex thereof at a temperature of about 30° C. to about 70° C. for a period of about 3 to about 7 minutes, to form a metal-phosphorus-sulfur coating thereon, the solution comprising about 0.1 to about 2.0 weight percent of metal salt or complex thereof and having a pH of about 10-13, said metal being selected from the groups IB, IIB, IVB, VB, VIB, VIIB and VIII of the Periodic Table.

Claim 18

A process for the preparation of a transparent electroductive polyethylene terephthalate material comprising the steps of: (A) contacting a polyethylene terephthalate film with a solution of phenol and perchloroethylene maintained at a temperature of about 40° to about 65° C., for a period of about three to about eight minutes, the volume ratio of phenol:perchloroethylene in the solution being between about 20:40 to about 65:40; (B) removing phenol from the surface of the film by contacting with perchloroethylene solvent at a temperature of about 35° to about 65° Celsius for a period of about 0.5 to about 2.0 minutes; (C) subjecting the film surface to solution of about 0.1 to about 1.5 weight percent of phosphorus sesquisulfide in perchloroethylene for a period of about one minute to about ten minutes at a temperature of about 20° to about 40° Celsius to deposit phosphorus sesquisulfide at the surface; and (D) subjecting the phosphorus sesquisulfide treated surface to a solution of a metal salt or complex thereof at a temperature of about 30° C. to about 70° C. for a period of about 3 to about 7 minutes, to form a metal-phosphorus-sulfur coating thereon, the solution comprising about 0.1 to about 2.0 weight percent of metal salt or complex thereof and having a pH of about 10-13, said metal being selected from the groups IB, IIB, IVB, VB, VIB, VIIB and VIII of the Periodic Table.