IPC분류정보
국가/구분 |
United States(US) Patent
등록
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국제특허분류(IPC7판) |
|
출원번호 |
US-0775577
(2004-02-09)
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발명자
/ 주소 |
- Pelosi, Lorenzo Fred
- Sormani, Patricia Mary Ellen
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출원인 / 주소 |
- E.I. du Pont de Nemours and Company
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인용정보 |
피인용 횟수 :
6 인용 특허 :
6 |
초록
The present invention relates to curable coating compositions containing acetoacetylated polyvinyl polymers obtained from polyvinyl polymers, such as polyvinyl butyrals. These coating compositions are especially suitable for use as wash primers in automotive OEM and refinish coating applications.
대표청구항
▼
1. A method of producing a coating on a substrate comprising:(i) mixing a crosslinkable component with a crosslinking component of a curable coating composition to form a pot mix, wherein said crosslinkable component comprises: (a) an acetoacetylated polyvinyl polymer having the formula: wherein (m)
1. A method of producing a coating on a substrate comprising:(i) mixing a crosslinkable component with a crosslinking component of a curable coating composition to form a pot mix, wherein said crosslinkable component comprises: (a) an acetoacetylated polyvinyl polymer having the formula: wherein (m) ranges from about 1.5 mole percent to about 85 mole percent, (n) ranges from about 0 mole percent to about 20.5 mole percent, (p) ranges from about 12 mole percent to about 87 mole percent and (q) ranges from about 1 mole percent to about 88 mole percent, sum of (m), (n), (p) and (q) being 100 and wherein R1 and R2 are independently H, substituted or unsubstituted C1 to C12 alkyl, substituted or unsubstituted C6 to C14 aryl, substituted or unsubstituted C7 to C22 aralkyl, substituted or unsubstituted C6 to C14 alkaryl, substituted, unsubstituted C4 to C14 carbocyclyl or a combination thereof, said substituents being independently selected from the group consisting of C1 to C12 alkoxy, acyl, carboxyl, derivative of carboxyl, sulfonyl, derivative of sulfonyl, cyano, and halo; (b) an acetoacetylated polyvinyl polymer having the formula: wherein (m) ranges from about 1.5 mole percent to about 85 mole percent, (n) ranges from about 0 mole percent to about 20.5 mole percent, (p) ranges from about 12 mole percent to about 87 mole percent, (q) ranges from about 1 mole percent to about 88 mole percent and (x) ranges from about 0.5 to about 6 mole percent, sum of (m), (n), (p), (q) and (x) being 100 and wherein R1 and R2 are independently H, substituted or unsubstituted C1 to C12 alkyl, substituted or unsubstituted C6 to C14 aryl, substituted or unsubstituted C7 to C22 aralkyl, substituted or unsubstituted C6 to C14 alkaryl, substituted, unsubstituted C4 to C14 carbocyclyl or a combination thereof, and wherein Z is H, or ?COOH and Y is ?COOH, halo, unsubstituted phenyl or a combination thereof; said substituents being independently selected from the group consisting of C1 to C12 alkoxy, acyl, carboxyl, derivative of carboxyl, sulfonyl, derivative of sulfonyl, cyano, and halo; (c) a combination thereof; and wherein said crosslinking component comprises a polyamine, a polyketimine, polyepoxide, polyisocyanate, melamine, C1 to C12 alkyl dialdehyde, C1 to C12 alkyl poly(meth)acrylate, or a combination thereof; (ii) applying a pot mix layer over said substrate; and (iii) curing said pot mix layer under ambient conditions or at elevated cure temperatures to form said coating on said substrate. 2. The method of claim 1 wherein said wherein said R1 is propyl and said R2 is methyl.3. The method of claim 1 or 2 further comprising applying a layer of base coating composition on said pot mix layer before said curing step.4. The method of claim 3 further comprising applying a layer of clear coating composition on said layer of base coating composition before said curing step.5. The method of claim 4 further comprising drying said pot mix layer before said curing step.6. The method of claim 5 wherein said coating composition is a wash primer composition.7. The method of claim 1 wherein said substrate is an automotive body.8. A method of producing a multi-coat system on a substrate comprising:(i) mixing a crosslinkable component with a crosslinking component of a curable coating composition to form a pot mix, wherein said crosslinkable component comprises: (a) an acetoacetylated polyvinyl polymer having the formula: wherein (m) ranges from about 1.5 mole percent to about 85 mole percent, (n) ranges from about 0 mole percent to about 20.5 mole percent, (p) ranges from about 12 mole percent to about 87 mole percent and (q) ranges from about 1 mole percent to about 88 mole percent, sum of (m), (n), (p) and (q) being 100 and wherein R1 and R2 are independently H, substituted or unsubstituted C1 to C12 alkyl, substituted or unsubstituted C6 to C14 aryl, substituted or unsubstituted C7 to C22 aralkyl, substituted or unsubstituted C6 to C14 alkaryl, substituted, unsubstituted C4 to C14 carbocyclyl or a combination thereof, said substituents being independently selected from the group consisting of C1 to C12alkoxy, acyl, carboxyl, derivative of carboxyl, sulfonyl, derivative of sulfonyl, cyano, and halo; (b) an acetoacetylated polyvinyl polymer having the formula: wherein (m) ranges from about 1.5 mole percent to about 85 mole percent, (n) ranges from about 0 mole percent to about 20.5 mole percent, (p) ranges from about 12 mole percent to about 87 mole percent, (q) ranges from about 1 mole percent to about 88 mole percent and (x) ranges from about 0.5 to about 6 mole percent, sum of (m), (n), (p), (q) and (x) being 100 and wherein R1 and R2 are independently H, substituted or unsubstituted C1 to C12 alkyl, substituted or unsubstituted C6 to C14 aryl, substituted or unsubstituted C7 to C22 aralkyl, substituted or unsubstituted C6 to C14 alkaryl, substituted, unsubstituted C4 to C14 carbocyclyl or a combination thereof, and wherein Z is H, or ?COOH and Y is ?COOH, halo, unsubstituted phenyl or a combination thereof; said substituents being independently selected from the group consisting of C1 to C12 alkoxy, acyl, carboxyl, derivative of carboxyl, sulfonyl, derivative of sulfonyl, cyano, and halo; (c) a combination thereof; and wherein said crosslinking component comprises a polyamine, a polyketimine, polyepoxide, polyisocyanate, melamine, C1 to C12 alkyl dialdehyde, C1 to C12 alkyl poly(meth)acrylate, or a combination thereof; (ii) applying a pot mix layer over said substrate; (iii) applying a layer of base coating composition on said pot mix layer; (iv) applying a layer of clear coating composition on said layer of base coating composition to form a multi-layer system on said substrate; and (v) curing said multi-layer system under ambient conditions or at elevated cure temperatures to form said multi-coat system on said substrate. 9. The method of claim 8 wherein said coating composition is formulated as a primer composition.10. The method of claim 8 further comprising applying a layer of a primer over said pot mix layer before said step of applying said layer of said base coating composition.11. The method of claim 10 wherein said coating composition is formulated as a wash primer composition.12. The method of claim 8, 9 or 10 wherein said substrate is an automotive body.
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