UV curable silver chloride compositions for producing silver coatings

• US 20050191586A1
• Filed: 03/22/2005
• Published: 09/01/2005
• Est. Priority Date: 09/06/2000
• Status: Active Grant

• Current Assignee: Allied PhotoChemical, Inc.
• Original Assignee: Allied PhotoChemical, Inc.
• Inventors: Krohn, Roy C.
• Granted Patent: US 7,323,499 B2
• Time in Patent Office: Days
• US Class Current: 430/502
• CPC Class Codes: C08L 2666/04 Macromolecular compounds according to groups C08L7/00 - C08L49/00, or C08L55/00 - C08L57/00; Derivatives thereof
• CPC Class Codes: C08L 33/062 Copolymers with monomers not covered by C08L33/06
• CPC Class Codes: C08L 33/068 containing glycidyl groups
• CPC Class Codes: C08L 33/14 of esters containing halogen, nitrogen, sulfur, or oxygen atoms in addition to the carboxy oxygen
• CPC Class Codes: C23C 18/08 characterised by the deposition of metallic material
• CPC Class Codes: C23C 18/143 Radiation by light, e.g. photolysis or pyrolysis

Abstract

The present invention discloses an ultraviolet light curable silver chloride composition and method for making such a composition that may be used to produce an silver coating on a substrate. The disclosed composition does not contain any significant amount of volatile organic solvents that do not become incorporated in the active layer after curing.

Claims

1. A photocurable silver chloride composition comprising:

a photocurable organic mixture;

a photoinitiator;

silver powder; and

silver chloride powder;

wherein the photocurable organic mixture comprises;

an ethylenically unsaturated monomer having Formula I;

wherein R₁ is hydrogen or substituted or unsubstituted alkyl; and

R₂ is a substituted or unsubstituted alkyl having more than 4 carbon atoms, a substituted or unsubstituted cycloalkyl, a substituted or unsubstituted alkyl cycloalkenyl, or a substituted or unsubstituted aryl.

2. The silver chloride composition of claim 1 wherein R₁ is hydrogen or methyl;

and R₂ is isobornyl, phenyl, benzyl, dicyclopentenyl, cyclohexyl, 3,3,5-trimethyl cyclohexyl, dicyclopentenyl oxyethyl, and naphthyl.

3. The silver chloride composition of claim 1 wherein the photocurable organic mixture further comprises an acrylated epoxy oligomer.

4. The silver chloride composition of claim 3 wherein the acrylated epoxy oligomer is selected from the group consisting of:

novolac epoxy acrylate diluted 20 weight percent by weight with tripropylene glycol diacrylate;

difunctional bisphenol based epoxy acrylate; and

mixtures thereof.

5. The silver chloride composition of claim 3 wherein the acrylated epoxy oligomer is present in an amount of about 1 to 25 weight percent, based on the total weight of the silver chloride composition.

6. The silver chloride composition of claim 1 wherein the ethylenically unsaturated monomer comprises an isobornyl acrylate monomer present in an amount of about 2 to 16 weight percent, based on the total weight of the silver chloride composition.

7. The silver chloride composition of claim 1 wherein the silver powder is present in an amount of about 20 to 60 weight percent, based on the total weight of the silver chloride composition.

8. The silver chloride composition of claim 1 wherein the silver chloride powder is present in an amount of about 30 to 50 weight percent, based on the total weight of the silver chloride composition.

9. The silver chloride composition of claim 1 wherein the photoinitiator is present in an amount of about 1 to 15 weight percent, based on the total weight of the silver chloride composition.

10. The silver chloride composition of claim 1 further comprising a flow promoting agent.

11. The silver chloride composition of claim 1 further comprising an aliphatic acrylated oligomer.

12. The silver chloride composition of claim 11 wherein the aliphatic acrylated oligomer is an aliphatic acrylated urethane oligomer.

13. The silver chloride composition of claim 12 wherein the aliphatic acrylated urethane oligomer is selected from the group consisting of:

a) aliphatic urethane diacrylate diluted 10 weight percent by weight with 1,6-hexanediol diacrylate;

b) aliphatic urethane triacrylate diluted 15 weight percent by weight with 1,6-hexanediol diacrylate);

c) aliphatic urethane diacrylate blended with 20 weight percent by weight tripropylene glycol diacrylate;

d) aliphatic urethane diacrylate blended with 25 weight percent by weight ethoxylated trimethylol propane triacrylate;

e) aliphatic urethane diacrylate blended with 19 weight percent by weight 2(2-ethoxyethoxy)ethyl acrylate;

f) aliphatic urethane diacrylate blended with 20 weight percent by weight tripropylene glycol diacrylate;

g) aliphatic urethane diacrylate blended with 20 weight percent by weight tripropylene glycol diacrylate;

h) aliphatic urethane diacrylate blended with 25 weight percent by weight tripropylene glycol diacrylate;

i) aliphatic urethane diacrylate; and

j) mixtures thereof.

14. The silver chloride composition of claim 12 wherein the aliphatic acrylated oligomer is present in an amount of about 0.1 to 15 weight percent, based on the total weight of the silver chloride composition.

15. A photocurable silver chloride composition comprising:

a photocurable organic mixture;

a photoinitiator;

silver powder; and

silver chloride powder;

wherein the photocurable organic mixture comprises;

an acrylated epoxy oligomer; and

an ethylenically unsaturated monomer having Formula I;

wherein R₁ is hydrogen or substituted or unsubstituted alkyl; and

R₂ is substituted or unsubstituted alkyl having more than 4 carbon atoms, a substituted or unsubstituted cycloalkyl;

a substituted or unsubstituted alkyl cycloalkenyl, or a substituted or unsubstituted aryl.

16. The silver chloride composition of claim 15 wherein R₁ is hydrogen or methyl;

and R₂ is isobornyl, phenyl, benzyl, dicyclopentenyl, cyclohexyl, 3,3,5-trimethyl cyclohexyl, dicyclopentenyl oxyethyl, and naphthyl.

17. The silver chloride composition of claim 15 wherein the ethylenically unsaturated monomer comprises an isobornyl monomer.

18. The silver chloride composition of claim 17 wherein:

the acrylated epoxy oligomer is present in an amount of about 1 to 25 weight percent, based on the total weight of the silver chloride composition;

the isobornyl acrylate monomer present in an amount of about 2 to 16 weight percent, based on the total weight of the silver chloride composition;

the silver powder is present in an amount of about 20 to 60 weight percent, based on the total weight of the silver chloride composition;

the silver chloride powder is present in an amount of about 30 to 50 weight percent, based on the total weight of the silver chloride composition; and

the photoinitiator is present in an amount of about 1 to 15 weight percent, based on the total weight of the silver chloride composition.

19. The silver chloride composition of claim 18 further comprising an aliphatic acrylated oligomer.

20. The silver chloride composition of claim 19 wherein the aliphatic acrylated oligomer is present in an amount of about 0.1 to 15 weight percent, based on the total weight of the silver chloride composition.