# US 4,394,177 A · Coating composition

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- Number: US 4,394,177 A
- Document ID: US4394177A
- Status: Granted
- Kind: A
- Application number: 06/222,565
- Filed: 1981-01-05
- Granted: 1983-07-19
- Earliest claimed: 1980-01-10
- Assignees: Sumitomo Chemical Company, Limited; Nippon Sheet Glass Co., Ltd.
- Inventors: Akira Fujioka; Kazuo Sakiyama; Akio Takigawa; Motoaki Yoshida
- Web page: https://patentgrep.com/patent/US4394177A

## CPC

- C09D 183/06: containing silicon bound to oxygen-containing groups (C09D183/12 takes precedence)
- 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 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
- 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)

## Abstract

A coating composition, which comprises: (A) at least one hydrolyzate selected from the group of epoxy group-containing silicon compounds, (B) at least one member selected from the group consisting of hydrolyzates of organic silicon compounds, colloidal silica and organic titanium compounds, and (C) a curing catalyst.

## Claims

### Claim 1

A transparent, abrasion-resistant coating composition having high adhesiveness for transparent polymers, which comprises: as component (A), at least one hydrolyzate selected from the group of epoxy group-containing silicon compounds represented by the general formula (1): ##STR10## wherein, R.sup.1 stands for an organic group containing an epoxy group, R.sup.2 for hydrogen atom, a hydrocarbon group having 1 to 6 carbon atoms or vinyl group, R.sup.3 for a hydrocarbon group having 1 to 5 carbon atoms, alkoxyalkyl group or acyl group having 1 to 4 carbon atoms, a for an integer of 1 to 3 and b for an integer of 0 to 2, providing that a+b.ltoreq.3 is satisfied, said one hydrolyzate being used in an amount of 100 parts by weight (of solids; calculated as ##EQU11## as component (B), at least one member selected from the group consisting of hydrolyzates of organic silicon compounds represented by the general formula (2):
R.sub.c.sup.4 --Si--(OR.sup.5).sub.4-c ( 2)
wherein, R.sup.4 stands for a hydrocarbon group having 1 to 6 carbon atoms, vinyl group, methacryloxy group, amino group, mercapto group, or organic group containing fluorine or chlorine, R.sup.5 for a hydrocarbon group having 1 to 5 carbon atoms, alkoxyalkyl group or acyl group having 1 to 4 carbon atoms and c for an integer of 0 to 3; colloidal silica and organic titanium compounds, said one member being used in an amount within the range of from 1 to 567 parts by weight (of solids, calculated as R.sub.c.sup.4 --Si--O.sub.(4-c)/2 in the case of an organic silicon compound represented by the general formula (2), as SiO.sub.2 in the case of colloidal silica or as R.sub.d.sup.6 --Ti--O.sub.(4-d)/2 in the case of an organic titanium compound, wherein R.sup.6 stands for an unhydrolyzed group containing no hydroxy group and d for an integer of 1 to 4); and as component (C), a curing catalyst selected from the group consisting of ammonium perchlorate and ammonium chloride.

### Claim 2 (depends on 1)

A composition set forth in claim 1, wherein component (B) consists in the hydrolyzate of an organic silicon compound represented by the general formula (2) used in an amount within the range of from 56 to 550 parts by weight and the colloidal silica used in an amount within the range of from 4 to 334 parts by weight, providing that the total of the amounts of the members of component (B) falls within the range of from 60 to 567 parts by weight.

### Claim 3 (depends on 1)

A composition set forth in claim 1, wherein (B) consists in at least one member selected from the group consisting of collodial silica and organic titanium compounds used in an amount within the range of from 1 to 150 parts by weight.

### Claim 4 (depends on 1)

A composition set forth in claim 1, wherein component (B) consists in the hydrolyzate of an organic silicon compound used in an amount within the range of from 105 to 430 parts by weight and the colloidal silica used in an amount in the range of from 16 to 200 parts by weight, providing that the total of the amounts of the members of component (B) falls within the range of from 121 to 473
parts by weight.

### Claim 5 (depends on 3)

A composition set forth in claim 3, wherein component (B) consists in at least one member selected from the group consisting of colloidal silica and organic titanium compounds used in an amount within the range of from 3 to 70 parts by weight.

### Claim 6 (depends on 2)

A composition set forth in claim 2, wherein the curing catalyst is used in an amount within the range of from 0.05 to 10% by weight based on the total amount of the component (A) and the component (B) taken as solids.

### Claim 7 (depends on 2)

A composition set forth in claim 2, wherein the amount of component (A) is greater than 27%.

### Claim 8 (depends on 4)

A composition set forth in claim 4, wherein the amount of component (A) is greater than 27%.

### Claim 9

A transparent, abrasion-resistant coating composition having high adhesiveness for transparent polymers, which comprises: as component (A), at least one hydrolyzate selected from the group of epoxy group-containing silicon compounds represented by the general formula (1): ##STR11## wherein, R.sup.1 stands for an organic group containing an epoxy group, R.sup.2 for hydrogen atom, a hydrocarbon group having 1 to 6 carbon atoms or vinyl group, R.sup.3 for a hydrocarbon group having 1 to 5 carbon atoms, alkoxyalkyl group or acyl group having 1 to 4 carbon atoms, a for an integer of 1 to 3 and b for an integer of 0 to 2, providing that a+b.ltoreq.3 is satisfied, said one hydrolyzate being used in an amount of 100 parts by weight (of solids, calculated as ##EQU12## as component (B), at least one member selected from the group consisting of hydrolyzates of organic silicon compounds represented by the general formula (2):
R.sub.c.sup.4 --Si--(OR.sup.5).sub.4-c ( 2)
wherein, R.sup.4 stand for a hydrocarbon group having 1 to 6 carbon atoms, vinyl group, methacryloxy group, amino group, mercapto group, or organic group containing fluorine or chlorine, R.sup.5 for a hydrocarbon group having 1 to 5 carbon atoms, alkoxyalkyl group or acyl group having 1 to 4 carbon atoms and c for an integer of 0 to 3, used in an amount within the range of 56 to 550 parts and colloidal silica used in an amount within the range of from 4 to 334 parts, (of solids, calculated as R.sub.c.sup.4 --Si--(OR.sup.5).sub.(4-c)/2 in the case of an organic silicon compound represented by the general formula (2), and as SiO.sub.2 in the case of colloidal silica), providing that the total amounts of the members of component (B) fall within the range of from 60 to 567 parts; and as component (C), a curing catalyst selected from the group consisting of ammonium perchlorate and ammonium chloride.

### Claim 10 (depends on 9)

A composition set forth in claim 9, wherein in component (B), the hydrolyzate of an organic silicon compound is used in an amount within the range of from 105 to 430 parts and the colloidal silica is used in an amount within the range of from 16 to 200 parts, providing that the total of the amounts of members of component (B) fall within the range of from 121 to 143 parts.

### Claim 11 (depends on 9)

A composition set forth in claim 9, wherein the amount of component (A) is greater than 27%.

### Claim 12 (depends on 10)

A composition set forth in claim 10, wherein the amount of component (A) is greater than 27%.