# US 8,465,807 B2 · Method for coating a tin-free silicon composition on a flexible medium

> Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt

- Number: US 8,465,807 B2
- Document ID: US8465807B2
- Status: Granted
- Kind: B2
- Application number: 13/378,410
- Filed: 2010-06-14
- Published: 2012-06-28
- Granted: 2013-06-18
- Earliest claimed: 2009-06-15
- Assignees: Bluestar Silicones France SAS
- Applicants: Christian Maliverney
- Inventors: Christian Maliverney
- Web page: https://patentgrep.com/patent/US8465807B2

## CPC

- C09D 183/04: Polysiloxanes
- C08J 7/0427: {with only one layer of a composition containing a polymer binder (with more layers C08J7/042)}
- C08J 7/043: Improving the adhesiveness of the coatings per se, e.g. forming primers (adhesives in the form of films or foils characterised by the primer layers between the polymer carriers and the adhesives C09J7/50)
- C08J 7/046: Forming abrasion-resistant coatings; Forming surface-hardening coatings
- C08J 7/05: Forming flame retardant coatings or fire resistant coatings
- C09D 183/06: containing silicon bound to oxygen-containing groups (C09D183/12 takes precedence)
- D06M 15/643: containing silicon in the main chain
- D06M 15/6433: {containing carboxylic groups}
- D06M 15/6436: {containing amino groups}
- D06M 15/693: with natural or synthetic rubber, or derivatives thereof
- D06N 3/128: {with silicon polymers}
- D21H 19/32: obtained by reactions forming a linkage containing silicon in the main chain of the macromolecule
- C08G 77/16: to hydroxy groups
- C08J 2483/00: Characterised by the use of macromolecular compounds obtained by reactions forming in the main chain of the macromolecule a linkage containing silicon with or without sulfur, nitrogen, oxygen, or carbon only; Derivatives of such polymers
- C08K 5/31: Guanidine; Derivatives thereof
- 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)
- C08J: WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H (working, e.g. shaping, of plastics B29)
- D06M: TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
- D06N: WALL, FLOOR, OR LIKE COVERING MATERIALS, e.g. LINOLEUM, OILCLOTH, ARTIFICIAL LEATHER, ROOFING FELT, CONSISTING OF A FIBROUS WEB COATED WITH A LAYER OF MACROMOLECULAR MATERIAL; FLEXIBLE SHEET MATERIAL NOT OTHERWISE PROVIDED FOR
- 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
- C08K: Use of inorganic or non-macromolecular organic substances as compounding ingredients (paints, inks, varnishes, dyes, polishes, adhesives C09)

## Abstract

A method is described for coating a flexible medium made from fabric, paper, polyvinyl chloride, polyester, polypropylene or polyethylene terephthalate with a tin-free elastomer silicon composition that can be cross-linked by polycondensation.

## Claims

### Claim 1

A method for coating a silicone composition X, which is a precursor of an elastomer and is crosslinkable by polycondensation reactions, onto a flexible substrate S which is made of textile, of paper, of polyvinyl chloride, of polyester, of polypropylene, of polyamide, of polyethylene, of polyurethane, of nonwoven fiberglass fabrics or of polyethylene terephthalate, comprising the following steps a), b), and c):
a) preparing a silicone composition X that is crosslinkable to elastomer by polycondensation reactions, which contains no metal catalyst, and which comprises:
a silicone base B comprising at least one polyorganosiloxane oil that is crosslinkable by polycondensation reaction so as to form a silicone elastomer, and
a catalytically effective amount of at least one polycondensation catalyst which is a nonsilylated organic compound conforming to the general formula (I):
in which
the identical or different radicals R1, R2, R3, R4 or R5 represent independently of one another a linear or branched monovalent alkyl group, a cycloalkyl group, a (cycloalkyl)alkyl group, the cyclic moiety being substituted or unsubstituted and optionally comprising at least one heteroatom or a fluoroalkyl group, an aromatic group, an arylalkyl group, a fluoroalkyl group or an alkylamine or alkylguanidine group,
the radicals R1, R2, R3 or R4 can be joined in pairs so as to form a 3-, 4-, 5-, 6- or 7-membered aliphatic cyclic moiety optionally substituted by one or more substituents, and
with the further condition that the radicals R1, R2, R3, R4 and R5 contain no silicon atom;
b) then applying said silicone composition X continuously or discontinuously to said flexible substrate S, and
c) crosslinking said silicone composition X in the presence of moisture provided by the ambient air or by prior addition of water, so as to form a silicone elastomer.

### Claim 2 (depends on 1)

The method as claimed in claim 1, wherein the polycondensation catalyst A is a nonsilylated organic compound selected from the group consisting of the following compounds (A1) to (A4):

### Claim 3 (depends on 1)

The method as claimed in claim 1, wherein the organopolysiloxane composition X which is crosslinkable to elastomer by polycondensation reactions comprises a catalytically effective amount of at least one polycondensation catalyst A as defined in claim 1 and a silicone base B comprising:
at least one polyorganosiloxane oil C which is crosslinkable by polycondensation to give an elastomer;
optionally at least one crosslinking agent D;
optionally at least one adhesion promoter E; and
optionally at least one nonsiliceous, organic and/or siliceous inorganic filler F.

### Claim 4 (depends on 1)

The method as claimed in claim 1, wherein in step b) said silicone composition X is applied to the flexible substrate S by transfer, by lick roller or by spraying using a nozzle, a doctor, a rotary machine or a reverse roll.

### Claim 5 (depends on 1)

The method as claimed in claim 1, wherein the flexible textile substrate S is a piece of lace or an elastic strip.

### Claim 6 (depends on 1)

A method of coating a flexible substrate S, the method comprising coating the flexible substrate S with the silicone composition X as defined in claim 1 wherein the flexible substrate S is a flexible textile substrate.

### Claim 7 (depends on 6)

The method as claimed in claim 6, wherein the textile substrate is a piece of lace or an elastic strip.

### Claim 8 (depends on 1)

A method of coating a flexible substrate S, the method comprising coating the flexible substrate S with the silicone composition X as defined in claim 1 wherein the flexible substrate S is made of paper, of polyvinyl chloride, of polyester, of polypropylene, of polyamide, of polyethylene, of polyurethane, of nonwoven fiberglass fabrics or of polyethylene terephthalate.