Method for coating paper machines

• US 20050266166A1
• Filed: 05/26/2005
• Published: 12/01/2005
• Est. Priority Date: 05/26/2004
• Status: Abandoned Application

• Current Assignee: E. I. du Pont de Nemours and Company (Corteva, Inc.)
• Original Assignee: E. I. du Pont de Nemours and Company (Corteva, Inc.)
• Inventors: Testa, Leonard George, Halsey, Glenn Tiffany
• Application Number:
  US11/138,973
• Publication Number:
  US 20050266166A1
• Time in Patent Office: Days
• US Class Current: 427/372.200
• CPC Class Codes: C10M 105/76 containing silicon
• CPC Class Codes: C10M 107/50 containing silicon
• CPC Class Codes: C10M 2229/041 containing aliphatic substituents
• CPC Class Codes: C10M 2229/042 containing aromatic substituents
• CPC Class Codes: C10N 2040/00 Specified use or application for which the lubricating composition is intended
• CPC Class Codes: C10N 2070/00 Specific manufacturing methods for lubricant compositions
• CPC Class Codes: C10N 2080/00 Special pretreatment of the material to be lubricated, e.g. phosphatising or chromatising of a metal

Abstract

A composition that can be used as a coating for paper and paper corrugating rolls comprises a silicone, a solvent, and a catalyst. Also provided is a method for applying a thin, continuous film coating on or onto a surface of a substrate or article. The method comprises combining a silicone, a solvent, and a catalyst to produce a coating composition, applying the coating composition on or onto the surface, and optionally curing the composition.

Claims

1. A method for lubricating one or more components of a paper machine comprising (a) cleaning a surface of one or more components of a paper machine;

(b) combining a silicone, a solvent, and a catalyst, to produce a coating composition; and

(c) applying said composition on or onto a surface of a substrate wherein the substrate is one or more components of a paper machine.

2. A method according to claim 1 further comprising curing said composition.

3. A method according to claim 1 or 2 wherein the composition further comprises one or more of modified fumed silica, surfactants, fluoropolymers, waxes, fatty acids or fatty acid salts, talc, emulsifier, biocide, or corrosion inhibitor.

4. A method according to claim 1 wherein said composition is applied to the surface of one or more of wet end rolls, table rolls, couch rolls, press rolls, dryer cans, and drum dryer rolls.

5. A method according to claim 1 wherein the composition is applied to the surface of corrugator rolls, corrugator fingers, pressure rolls, corrugator pressure belts, Double Backer hot plate/mesh plates, ink pans and glue pans or a combination of two or more thereof.

6. A method according to claim 4 or 5 wherein the composition is applied to the surface of paper rolls, drum dryer rolls, corrugator rolls, pressure rolls, pressure belts, corrugator fingers, Double Backer hot plate/mesh plate, glue pan and combinations of two or more thereof.

7. A method of claim 6 wherein the composition is applied to the surface of paper rolls, drum dryer rolls, corrugator rolls, corrugator fingers, and combinations of two or more thereof.

8. A method according to claim 7 wherein the composition is applied to the surface of corrugator rolls.

9. A method according to claim 1 wherein cleaning comprises contacting said components of said paper machine with a detergent.

10. A method according to claim 1 wherein cleaning comprises low or high-pressure water washing of said components of said paper machine.

11. A method according to claim 1 or 2 wherein the silicone has the structure of (R₃SiO_0.5)_m(R₂SiO)_n(RSiO_1.5)_p(SiO₂)_q where each R can be the same or different and is independently selected from the group consisting of hydrogen, a hydrocarbon radical of 1-20 carbon atoms, and combinations of two or more thereof.

12. A method according to claim 11 wherein the silicone R is methyl, phenyl or a combination thereof.

13. A method according to claim 12 wherein the silicone is methyl phenyl silicone.

14. A method according to claim 1 or 2 wherein the paper machine is a hot roll system corrugating machine and the solvent has a flash point of at least 100°

F. (38+ C.).

15. A method according to claim 15 wherein the solvent has a flash point of at least 150°

F. (65°

C.).

16. A method according to claim 16 wherein the solvent is dipropylene glycol methyl ether.

17. A paper machine comprising one or more components having deposited thereon (a) a composition comprising a silicone, a solvent, and a catalyst or (b) a cured composition produced by curing the composition of (a).

18. A paper machine according to claim 17 wherein said component is a paper-corrugating roll.