UV CURABLE COMPOSITION FOR FORMING DIELECTRIC COATINGS AND RELATED METHOD

• US 20080114089A1
• Filed: 01/17/2008
• Published: 05/15/2008
• Est. Priority Date: 11/07/2003
• Status: Abandoned Application

• Current Assignee: Allied PhotoChemical, Inc.
• Original Assignee: Allied PhotoChemical, Inc.
• Inventors: Krohn, Roy
• Application Number:
  US12/015,967
• Publication Number:
  US 20080114089A1
• Time in Patent Office: Days
• US Class Current: 522/30
• CPC Class Codes: C08F 290/04 Polymers provided for in subclasses C08C or C08F
• CPC Class Codes: C08F 290/14 Polymers provided for in subclass C08G
• CPC Class Codes: C08L 2205/02 containing two or more polymers of the same C08L -group
• CPC Class Codes: C08L 2666/02 Organic macromolecular compounds, natural resins, waxes or and bituminous materials
• 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 33/06 of esters containing only carbon, hydrogen and oxygen, which oxygen atoms are present only as part of the carboxyl radical
• CPC Class Codes: C08L 33/08 Homopolymers or copolymers of acrylic acid esters
• CPC Class Codes: C08L 33/14 of esters containing halogen, nitrogen, sulfur, or oxygen atoms in addition to the carboxy oxygen
• CPC Class Codes: C08L 91/06 Waxes
• CPC Class Codes: C09D 175/16 having terminal carbon-to-carbon unsaturated bonds
• CPC Class Codes: C09D 4/06 Organic non-macromolecular compounds having at least one polymerisable carbon-to-carbon unsaturated bond in combination with a macromolecular compound other than an unsaturated polymer of groups C09D159/00 - C09D187/00
• CPC Class Codes: G03F 7/027 Non-macromolecular photopolymerisable compounds having carbon-to-carbon double bonds, e.g. ethylenic compounds G03F7/075 takes precedence
• CPC Class Codes: G03F 7/032 with binders
• CPC Class Codes: H01B 3/447 from acrylic compounds
• CPC Class Codes: H01L 21/02118 carbon based polymeric organic or inorganic material, e.g. polyimides, poly cyclobutene or PVC polymers per se C08G, photoresist per se G03F
• CPC Class Codes: H01L 21/312 Organic layers, e.g. photoresist H01L21/3105, H01L21/32 take precedence; photoresists per se G03C

Abstract

The present invention discloses a photocurable composition for forming a dielectric layer on a substrate. The dielectric composition of the present invention comprises a first acrylated oligomer, a second acrylated oligomer having a viscosity less than the first acrylated oligomer, a polyolefin wax, an acrylated monomer and a photoinitiator. The first acrylated oligomer as used in the composition of the invention has a viscosity that is less than the second acrylated oligomer. The present invention also discloses a method of making a dielectric coating using the composition of the present invention.

Claims

1. A photocurable composition for forming a dielectric layer on a substrate, the photocurable composition comprising:

a first acrylated oligomer;

a second acrylated oligomer having a viscosity less than the first;

a wax;

an acrylated monomer wherein comprising a component having formula I;

wherein R₁ is hydrogen or substituted or unsubstituted alkyl; and

R₂ is

wherein R₃ is hydrogen or a substituted or unsubstituted alkyl; and

a photoinitiator.

2. The photocurable composition of claim 1 wherein the first acrylated oligomer comprises a component selected from the group consisting of an acrylated epoxy oligomer, an acrylated polyester oligomer, acrylated silicone oligomer, acrylated acrylic oligomer, acrylated urethane oligomer, an acrylated melamine oligomer, and mixtures thereof.

3. The photocurable composition of claim 1 wherein the first acrylated oligomer comprises aliphatic urethane acrylate.

4. The photocurable composition of claim 3 wherein the aliphatic urethane acrylate comprises a component selected from the group consisting of aliphatic urethane monoacrylates, aliphatic urethane diacrylates, aliphatic urethane triacrylates, and mixtures thereof.

5. The photocurable composition of claim 1 wherein the second acrylated oligomer comprises a component selected from the group consisting of an acrylated epoxy oligomer, an acrylated polyester oligomer, acrylated silicone oligomer, acrylated acrylic oligomer, acrylated urethane oligomer, an acrylated melamine oligomer, and mixtures thereof.

6. The photocurable composition of claim 1 wherein the second acrylated oligomer comprises a component selected from the group consisting of an aliphatic monoacrylates oligomer, aliphatic diacrylate oligomer, an aliphatic triacrylate oligomer, and mixtures thereof.

7. The photocurable composition of claim 4 wherein the acrylated monomer comprises a component selected from ethylene glycol dicyclopentyl ether acrylate, an isobornyl acrylate, diethylene glycol dimethacrylate and mixtures thereof.

8. The photocurable composition of claim 1 wherein the wax comprises a micronized wax.

9. The photocurable composition of claim 1 wherein the wax comprises a polyolefin wax.

10. The photocurable composition of claim 1 further comprising a talc.

11. The photocurable composition of claim 1 wherein:

the first acrylated oligomer is present in an amount from about 5 weight percent to about 80 weight percent;

the second acrylated oligomer is present in an amount from about 1 weight percent to about 30 weight percent;

the wax is present in an amount from 1 weight percent to about 60 weight percent;

the acrylated monomer is present in an amount from about 5 weight percent to about 80 weight percent; and

the photoinitiator is present in an amount from about 0.1 weight percent to about 20 weight percent.

12. The photocurable composition of claim 1 further comprising an amine functional acrylate co-initiator.

13. The photocurable composition of claim 1 further comprising a component selected from a pigment, a flow promoting agent, and mixtures thereof.

14. A photocurable composition for forming a dielectric layer on a substrate, the photocurable composition comprising:

an aliphatic urethane acrylate;

an acrylated oligomer having a viscosity less than the aliphatic urethane acrylate;

a polyolefin wax;

an acrylated monomer comprising a component having formula I;

wherein R₁ is hydrogen or substituted or unsubstituted alkyl; and

R₂ is

wherein R₃ is hydrogen or a substituted or unsubstituted alkyl; and

a photoinitiator.

15. A photocurable composition for forming a dielectric layer on a substrate, the photocurable composition consisting essentially of:

a first acrylated oligomer;

a second acrylated oligomer having a viscosity less than the first wherein the viscosity of the second acrylated oligomer is less than 3000 cP at 25°

C.;

a wax;

an acrylated monomer;

a photoinitiator; and

an amine functional acrylate co-initiator,

wherein;

the first acrylated oligomer is present in an amount from about 5 weight percent to about 80 weight percent of the total weight of the photocurable composition;

the second acrylated oligomer is present in an amount from about 1 weight percent to about 30 weight percent of the total weight of the photocurable composition;

the wax is present in an amount from 1 weight percent to about 60 weight percent of the total weight of the photocurable composition;

the acrylated monomer is present in an amount from about 5 weight percent to about 80 weight percent of the total weight of the photocurable composition; and

the photoinitiator is present in an amount from about 0.1 weight percent to about 20 weight percent of the total weight of the photocurable composition.

16. The photocurable composition of claim 15 wherein the first acrylated oligomer comprises a component selected from the group consisting of an acrylated epoxy oligomer, an acrylated polyester oligomer, acrylated silicone oligomer, acrylated acrylic oligomer, acrylated urethane oligomer, an acrylated melamine oligomer, and mixtures thereof.

17. The photocurable composition of claim 15 wherein the first acrylated oligomer comprises aliphatic urethane acrylate.

18. The photocurable composition of claim 17 wherein the aliphatic urethane acrylate comprises a component selected from the group consisting of aliphatic urethane monoacrylates, aliphatic urethane diacrylates, aliphatic urethane triacrylates, and mixtures thereof.

19. The photocurable composition of claim 15 wherein the second acrylated oligomer comprises a component selected from the group consisting of an acrylated epoxy oligomer, an acrylated polyester oligomer, acrylated silicone oligomer, acrylated acrylic oligomer, acrylated urethane oligomer, an acrylated melamine oligomer, and mixtures thereof.

20. The photocurable composition of claim 15 wherein the second acrylated oligomer comprises a component selected from the group consisting of an aliphatic monoacrylates oligomer, aliphatic diacrylate oligomer, an aliphatic triacrylate oligomer, and mixtures thereof.