# US 9,005,394 B2 · Anti-soiling agent composition

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- Number: US 9,005,394 B2
- Document ID: US9005394B2
- Status: Granted
- Kind: B2
- Application number: 13/497,577
- Filed: 2011-06-10
- Published: 2014-07-24
- Granted: 2015-04-14
- Earliest claimed: 2011-06-10
- Assignees: Maintech Co., Ltd.
- Applicants: Hiroshi Sekiya; Hiraku Sawada
- Inventors: Hiroshi Sekiya; Hiraku Sawada
- Web page: https://patentgrep.com/patent/US9005394B2

## CPC

- B08B 17/00: Methods preventing fouling {(preventing accumulation of deposits in pneumatic conveyors B65G53/521)}
- B32B 27/283: {comprising polysiloxanes}
- C08L 83/08: containing silicon bound to organic groups containing atoms other than carbon, hydrogen and oxygen
- C09D 183/08: containing silicon bound to organic groups containing atoms other than carbon, hydrogen, and oxygen
- D06M 15/6436: {containing amino groups}
- D21H 17/13: Silicon-containing compounds
- D21H 17/59: obtained by reactions forming in the main chain of the macromolecule a linkage containing silicon
- D21H 19/32: obtained by reactions forming a linkage containing silicon in the main chain of the macromolecule
- D21H 21/04: Slime-control agents
- B08B 2220/01: Adhesive materials
- C08G 77/388: containing nitrogen
- Y10T 428/31663: As siloxane, silicone or silane
- B08B: CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B32B: LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- C08L: COMPOSITIONS OF MACROMOLECULAR COMPOUNDS (compositions based on polymerisable monomers C08F, C08G; artificial filaments or fibres D01F; textile treating compositions D06)
- C09D: COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR (cosmetics A61K; processes for applying liquids or other fluent materials to surfaces, in general, B05D; staining wood B27K5/02; glazes or vitreous enamels C03C; natural resins, French polish, drying-oils, driers, turpentine, per se, C09F; polishing compositions other than French polish, ski waxes C09G; adhesives or use of materials as adhesives C09J; materials for sealing or packing joints or covers C09K3/10; materials for stopping leaks C09K3/12; processes for the electrolytic or electrophoretic production of coatings C25D)
- D06M: TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
- D21H: PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
- C08G: MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- Y10T: TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION

## Abstract

[Object] To provide an anti-soiling agent compound that can sufficiently prevents adhesion of pitch to a dry part region. [Solution] The present invention provides an anti-soiling agent composition for preventing pitch contamination in a dry part of a paper-making process, and the composition has a polysiloxane compound represented by the following formula (1), wherein the number of amino-modified groups per molecule of the polysiloxane compound is in a range from 0.5 to 5. [wherein, a substituent R1 represents a methyl group or an amino-modified group represented by the following formula (2), and the number n of repeating siloxane units represents an integer in a range from 50 to 1000, and wherein, each of a substituent R2 and a substituent R3 independently represents an alkylene group having carbon atoms of 1 to 6, and the number m of repeating amino-alkylene units represents an integer in a range from 0 to 2].

## Claims

### Claim 1

A method for preventing pitch contamination on cylinders, calendar roll, canvas and breaker stack roll of a paper-making machine comprising spraying onto their surfaces an anti-soiling composition comprising a polysiloxane compound, the polysiloxane compound being represented by the following formula (1),
wherein a substituent R1 represents a methyl group or an amino-modified group represented by the following formula (2), and the number n of repeating siloxane units represents an integer in a range from 100 to 800, and
wherein a substituent R2 is a propylene group and a substituent R3 is an ethylene group, and the number m of repeating amino-alkylene units represents an integer that is 1,
wherein the number of amino-modified groups per molecule of the polysiloxane compound is in a range from 0.5 to 5 so that a coat film is formed on a dry part region so as to disperse pitch, and the polysiloxane compound has a compounding ratio in a range from 0.1 to 40% by weight, and
wherein the polysiloxane compound of the anti-soiling composition is applied to the cylinders, calender roll, canvas, and breaker stack roll in an amount per unit area of paper passing therethrough of from 10 μg/m2 to 10,000 μg/m2.

### Claim 2 (depends on 1)

The method according to claim 1, wherein the anti-soiling composition further comprises an emulsifier,
wherein the compounding ratio of the emulsifier to one part by weight of the polysiloxane compound is in a range from 0.05 to 0.4 parts by weight.

### Claim 3 (depends on 1)

The method according to claim 1, wherein the number of amino-modified groups per molecule of the polysiloxane compound is in a range from 0.5 to 3.