METHOD FOR TREATING WHEEL RIMS AND COMPOSITION FOR USE THEREIN

• US 20110189404A1
• Filed: 09/23/2009
• Published: 08/04/2011
• Est. Priority Date: 09/25/2008
• Status: Active Grant

• Current Assignee: 3M Innovative Properties Company (3M Company)
• Original Assignee: 3M Innovative Properties Company (3M Company)
• Inventors: Kuehneweg, Bernd, Koehler, Frank, Doelen, Leonardus, Audenaert, Frans A., Furtak, Christoph, Dams, Rudolf J.
• Granted Patent: US 8,663,741 B2
• Time in Patent Office: Days
• US Class Current: 427/387
• CPC Class Codes: C08G 77/442 containing vinyl polymer sequences
• CPC Class Codes: C08G 77/458 containing polyurethane sequences
• CPC Class Codes: C08L 83/00 Compositions 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; Compositions of derivatives of such polymers
• CPC Class Codes: C08L 83/10 Block- or graft-copolymers containing polysiloxane sequences obtained by polymerising a compound having a carbon-to-carbon double bond on to a polysiloxane C08L51/08, C08L53/00
• CPC Class Codes: C09D 183/10 Block or graft copolymers containing polysiloxane sequences obtained by polymerising a compound having a carbon-to-carbon double bond on to a polysiloxane C09D151/08, C09D153/00
• CPC Class Codes: C09D 4/00 Coating compositions, e.g. paints, varnishes or lacquers, based on organic non-macromolecular compounds having at least one polymerisable carbon-to-carbon unsaturated bond ; Coating compositions, based on monomers of macromolecular compounds of groups C09D183/00 - C09D183/16

Abstract

There is provided a method of treatment including (i) applying a treatment composition to at least a portion of the surface of a wheel rim and (ii) allowing a thus applied treatment composition to cure. There is also provided compounds and compositions useful in the method.

Claims

1. Method of treatment comprising (i) applying a treatment composition to at least a portion of the surface of a wheel rim and (ii) allowing a thus applied treatment composition to cure, said treatment composition comprising dissolved or dispersed in an organic solvent:

(a) at least one polymer comprising a polysiloxane segment or a segment that is fluorinated and said polymer having at least one —

SiY functional group wherein Y represents a hydrolysable group and wherein said —

SiY group is comprised in end groups of the polymer and/or side groups of said polymer; and

(b) at least one hydrolysable silane corresponding to the formula (I) or hydrolysates or condensates thereof;

Q_nSiG_4-n  

 

(I)

wherein Q represents a hydrocarbon group that can optionally be substituted, G represents a hydrolysable group and n is 0, 1 or 2;

or as an alternative to or in addition to components (a) and (b),

(c) condensation products of (i) said polymer and (ii) said hydrolysable silane according to formula (I) or hydrolysates or condensates of said hydrolysable silane according to formula (I).

2. Method according to claim 1 wherein the polymer comprises polysiloxane segments and wherein said segments have an average number of SiO units of 5 to 200.

3. Method according to any of claim 1 wherein said composition further comprises a polysiloxane based surfactant.

4. Method according to claim 1 wherein said polymer is a polysiloxane based polymer comprising repeating units of the formula —

(R)₂SiO—

, wherein R represents an alkyl group of 1 to 4 carbon atoms or an aryl group.

5. Method according to claim 1 wherein said polymer comprises one or more reaction products of (i) a polysiloxane of which the end groups comprise an isocyanate reactive group, (ii) a di-isocyanate and (iii) an organic compound having (a) at least one —

SiY group wherein Y has the meaning as defined in any of the previous claims, and (b) an isocyanate reactive group.

6. Method according to claim 1 wherein said polymer comprises one or more reaction products of a free radical reaction of an ethylenically unsaturated monomer having at least one —

SiY group in the presence of a polysiloxane having two or more mercapto groups.

7. Method according to claim 1 wherein said polymer further comprises one or more segments of a polyoxyalkylene in which the oxyalkylene units have from 1 to 4 carbon atoms.

8. Method according to claim 1 wherein said surface of said wheel rim to which said composition is applied comprises an organic coating.

9. Method according to claim 1 wherein the composition further comprises a compound having at least one —

Si-G¹ functional group wherein G¹ represents a hydrolysable group and wherein said compound does not contain polysiloxane segments or segments that are fluorinated.

10. Compound obtainable by a free radical polymerization of an ethylenically unsaturated monomer having at least one —

SiY functional group, wherein Y represents a hydrolysable group, in the presence of chain transfer agent that comprises a mercapto group and an isocyanate reactive group.

11. Compound comprising one or more reaction products of (i) a polysiloxane of which the end groups comprise an isocyanate reactive group, (ii) a di-isocyanate and (iii) a compound a defined in claim 10.

14. Coating composition comprising dispersed or dissolved in an organic solvent:

(a) at least one compound as defined in claim 11; and

(b) at least one hydrolysable silane corresponding to the formula (I) or hydrolysates or condensates thereof;

Q_nSiG_4-n  

 

(I)

wherein Q represents a hydrocarbon group that can optionally be substituted, G represents a hydrolysable group and n is 0, 1 or 2;

or as an alternative to or in addition to components (a) and (b),

(c) condensation products of (i) said compound and (ii) said hydrolysable silane according to formula (I) or hydrolysates or condensates of said hydrolysable silane according to formula (I).

12. Compound obtainable by a free radical reaction of an ethylenically unsaturated monomer having at least one —

SiY functional group in the presence of a polysiloxane having a mercapto group in each of the end groups.

16. Coating composition comprising dispersed or dissolved in an organic solvent:

(a) at least one compound as defined in claim 12; and

(b) at least one hydrolysable silane corresponding to the formula (I) or hydrolysates or condensates thereof;

Q_nSiG_4-n  

 

(I)

wherein Q represents a hydrocarbon group that can optionally be substituted, G represents a hydrolysable group and n is 0, 1 or 2;

or as an alternative to or in addition to components (a) and (b),

(c) condensation products of (i) said compound and (ii) said hydrolysable silane according to formula (I) or hydrolysates or condensates of said hydrolysable silane according to formula (I).

13. Compound obtainable by a free radical of an ethylenically unsaturated monomer having at least one —

SiY functional group in the presence of a polysiloxane having two of more mercapto groups, at least one of which is contained in a side group of the polymer and wherein the polysiloxane has an average number of SiO units of 5 to 200.

17. Coating composition comprising dispersed or dissolved in an organic solvent:

(a) at least one compound as defined in claim 13; and

(b) at least one hydrolysable silane corresponding to the formula (I) or hydrolysates or condensates thereof;

Q_nSiG_4-n  

 

(I)

wherein Q represents a hydrocarbon group that can optionally be substituted, G represents a hydrolysable group and n is 0, 1 or 2;

or as an alternative to or in addition to components (a) and (b),

(c) condensation products of (i) said compound and (ii) said hydrolysable silane according to formula (I) or hydrolysates or condensates of said hydrolysable silane according to formula (I).

15. Coating composition comprising dispersed or dissolved in an organic solvent:

(a) at least one polymer comprising a polysiloxane segment and having a plurality of —

SiY functional groups wherein Y represents a hydrolysable group and wherein said —

SiY groups are comprised in end groups and/or side groups of said polymer and wherein the amount of hydrolyzable groups Y bonded to an Si atom is on average more than 6 per polymer; and

(b) at least one hydrolysable silane corresponding to the formula (I) or hydrolysates or condensates thereof;

Q_nSiG_4-n  

 

(I)

wherein Q represents a hydrocarbon group that can optionally be substituted, G represents a hydrolysable group and n is 0, 1 or 2;

or as an alternative to or in addition to components (a) and (b),

(c) condensation products of (i) said polymer and (ii) said hydrolysable silane according to formula (I) or hydrolysates or condensates of said hydrolysable silane according to formula (I).