# US 10,308,771 B2 · Coating compositions and coatings for adjusting friction

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- Number: US 10,308,771 B2
- Document ID: US10308771B2
- Status: Granted
- Kind: B2
- Application number: 15/252,736
- Filed: 2016-08-31
- Published: 2018-03-01
- Granted: 2019-06-04
- Earliest claimed: 2016-08-31
- Assignees: PPG Industries Ohio, Inc.
- Applicants: PPG Industries Ohio, Inc.
- Inventors: Renlong Gao; Shanti Swarup; Xiangling Xu
- Web page: https://patentgrep.com/patent/US10308771B2

## CPC

- C08G 77/388: containing nitrogen
- C03C 17/30: with silicon-containing compounds
- C08K 5/5403: {containing no other elements than carbon or hydrogen}
- C08K 5/5415: containing at least one Si—O bond
- C08K 5/5425: containing at least one C=C bond
- C09D 183/08: containing silicon bound to organic groups containing atoms other than carbon, hydrogen, and oxygen
- C08G: MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C03C: CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
- C08K: Use of inorganic or non-macromolecular organic substances as compounding ingredients (paints, inks, varnishes, dyes, polishes, adhesives C09)
- 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)

## Abstract

An alkoxysilane functionalized polysiloxane polymer can be prepared from a mixture of reactants including: a) a polysiloxane polymer having two or more reactive functional groups selected from -A-NH2, -A-OH, -A-N═C═O, -A-COOH, or combinations thereof; and b) at least one alkoxysilane having a functional group that is reactive with the reactive functional groups on the polysiloxane polymer. The alkoxysilane functionalized polysiloxane polymer can be combined with additional components to form a coating composition.

## Claims

### Claim 1

An alkoxysilane functionalized polysiloxane polymer prepared from a mixture of reactants comprising:
a) a polysiloxane polymer represented by Chemical Structure (I):
wherein
m is a value of 10 or greater,
n is a value of 2 or greater,
w and x are each independently a value of 3 and z and y are both 0,
each R1 is independently hydrogen or a C1-C6 alkyl,
each R2 is -A-NH2
A is a C1-C6 alkylene or R3—NH—R3, and
each R3 is independently a C1-C6 alkylene;
and
b) at least one alkoxysilane comprising a functional group B that is reactive with the reactive functional groups of R2 on the polysiloxane polymer of (a), wherein the at least one alkoxysilane is represented by Chemical Structure (II):
wherein
R5, R6, and R7 are each an alkoxy group,
R8 is a C1-C20 alkylene, and
R9 is an ethylenically unsaturated group.

### Claim 2 (depends on 1)

The alkoxysilane functionalized polysiloxane polymer of claim 1, wherein a molar ratio of a total amount of the reactive functional groups of the polysiloxane polymer to a total amount of the functional group B of all alkoxysilanes is from 1:1 to 1:0.01.

### Claim 3 (depends on 1)

The alkoxysilane functionalized polysiloxane polymer of claim 1, wherein the alkoxysilane functionalized polysiloxane polymer has a weight average molecular weight of greater than 2,500 g/mol.

### Claim 4 (depends on 1)

A coating composition comprising an alkoxysilane functionalized polysiloxane polymer according to claim 1.

### Claim 5 (depends on 4)

The coating composition of claim 4, wherein the alkoxysilane functionalized polysiloxane polymer comprises from 0.01 to 10 weight % of the coating composition, based on the total weight of the coating composition.

### Claim 6 (depends on 4)

The coating composition of claim 4, further comprising a protonic acid.

### Claim 7 (depends on 6)

The coating composition of claim 6, wherein the protonic acid comprises a carboxylic acid, a hydrogen halide, sulfuric acid, nitric acid, or combinations thereof.

### Claim 8 (depends on 6)

The coating composition of claim 6, wherein the protonic acid is present in the coating composition in an amount of from 0.01 to 5 parts by weight per 100 parts by weight of the alkoxysilane functionalized polysiloxane polymer.

### Claim 9 (depends on 4)

The coating composition of claim 4, further comprising a non-aqueous solvent.

### Claim 10 (depends on 4)

A substrate at least partially coated with the coating composition of claim 4.

### Claim 11 (depends on 10)

The substrate of claim 10, wherein the substrate comprises glass.

### Claim 12 (depends on 11)

The substrate of claim 11, wherein the substrate forms at least a portion of an electronic device.

### Claim 13 (depends on 10)

The substrate of claim 10, wherein the coating composition is heated for a temperature selected within a range of 150° C. to 250° C. to form a cured coating with a dry film thickness of less than 1 micrometer.

### Claim 14 (depends on 1)

A method of applying a coating to a substrate comprising:
a) mixing the alkoxysilane functionalized polysiloxane polymer according to claim 1 in a non-aqueous medium with a protonic acid; and
b) applying the mixture of (a) at least partially over a substrate under conditions to form a coating over the substrate.

### Claim 15 (depends on 14)

The method of claim 14, wherein a molar ratio of a total amount of the reactive functional groups of the polysiloxane polymer to a total amount of the functional group B of all alkoxysilanes is from 1:1 to 1:0.01.

### Claim 16 (depends on 14)

The method of claim 14, wherein the coating is formed by heating the applied mixture at a temperature selected within a range of 150° C. to 250° C.

### Claim 17 (depends on 14)

The method of claim 14, wherein the substrate forms at least a portion of an electronic device.

### Claim 18

A method of preparing an alkoxysilane functionalized polysiloxane polymer comprising reacting a mixture of reactants comprising:
a) a polysiloxane polymer represented by Chemical Structure (I):
wherein
m is a value of 10 or greater,
n is a value of 2 or greater,
w and x are each independently a value of 3 and z and y are both 0,
each R1 is independently hydrogen or a C1-C6 alkyl,
each R2 is -A-NH2
A is a C1-C6 alkylene or R3—NH—R3, and
each R3 is independently a C1-C6 alkylene;
and
b) at least one alkoxysilane comprising a functional group B that is reactive with the reactive functional groups of R2 on the polysiloxane polymer of (a), wherein the at least one alkoxysilane is represented by Chemical Structure (II):
wherein
R5, R6, and R7 are each an alkoxy group,
R8 is a C1-C20 alkylene, and
R9 is an ethylenically unsaturated group.

### Claim 19 (depends on 18)

The method of claim 18, wherein (i) the polysiloxane polymer and (ii) the alkoxysilane are reacted together at a temperature selected within a range of 40° C. to 100° C.