[특허]Method for preparing and treating a steel substrate

Method for preparing and treating a steel substrate 원문보기

IPC분류정보
국가/구분	United States(US) Patent 등록
국제특허분류(IPC7판)	C09D-005/08 B05D-003/00 C25D-013/20 C23C-022/34 C23C-022/78
출원번호	US-0832057 (2013-03-15)
등록번호	US-9303167 (2016-04-05)
발명자 / 주소	Okerberg, Brian C. Vargas, Richard M. Brent, Randall J. McIntyre, John F. McMillen, Mark W. Silvernail, Nathan J.
출원인 / 주소	PPG Industries Ohio, Inc.
대리인 / 주소	Yeomans, Charles M.
인용정보	피인용 횟수 : 0 인용 특허 : 39

초록 ▼

Disclosed are methods for treating metal substrates, including ferrous substrates, such as cold rolled steel and electrogalvanized steel. The methods include contacting the metal substrates with a conditioning composition including a free fluoride source and then depositing a pretreatment composition including a Group IIIB and/or IVB metal on a portion of the substrate contacted with the conditioning composition. Also disclosed are electrophoretically coated substrates treated by the methods.

대표청구항 ▼

1. A method for preparing and pretreating a substrate comprising: (a) contacting at least a portion of the substrate with a conditioning composition comprising a free fluoride source, wherein the pH value of the conditioning composition is in a range from 2.5 to 5, and wherein, upon contact with the substrate, the conditioning composition activates the surface for improved reaction with subsequent coating steps and removes oxide layers when oxide layers are present on the substrate surface; and(b) depositing a pretreatment composition comprising a Group IIIB and/or Group IVB metal on at least a portion of the substrate contacted with the conditioning composition, wherein, upon contact with the substrate, the pretreatment composition reacts with and chemically alters the substrate surface and binds to it to form a protective layer. 2. The method of claim 1, wherein the conditioning composition is formulated to replenish the pretreatment composition. 3. The method of claim 1, wherein the conditioning composition is compatible with the pretreatment composition. 4. The method of claim 1, wherein the conditioning composition is substantially free of oxidants. 5. The method of claim 1 further comprising: (c) depositing a coating composition onto at least a portion of the substrate contacted with the pretreatment composition. 6. The method of claim 5, wherein the coating composition is an electrocoat. 7. The method of claim 5, wherein the coating composition is a powder coat. 8. The method of claim 5, wherein the coating composition is a liquid. 9. The method of claim 1, wherein the free fluoride of the conditioning composition comprises from 10 to 5000 parts per million, based on a total weight of the conditioning composition. 10. The method of claim 1, wherein the free fluoride of the conditioning composition comprises from 100 to 2000 parts per million, based on a total weight of the conditioning composition. 11. The method of claim 1, wherein the free fluoride source comprises hexafluorozirconic acid, hexafluorotitanic acid, salts thereof, ammonium bifluoride, or combinations thereof. 12. The method of claim 1, wherein the conditioning composition further comprises a Group IIIB and/or Group IVB metal. 13. The method of claim 1, wherein the pretreatment composition comprises a zirconium-based agent. 14. The method of claim 1, wherein the pretreatment composition further comprises a free fluoride source. 15. The method of claim 14, wherein the free fluoride source comprises ammonium bifluoride.

이 특허에 인용된 특허 (39)

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Jerabek Robert D. (Glenshaw PA) Marchetti Joseph R. (Greensburg PA) Zwack Robert R. (New Kensington PA), Method of electrodepositing primary amine group-containing cationic resins.
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Jerabek Robert D. (Glenshaw PA) Marchetti Joseph R. (Greensburg PA), Method of electrodepositing self-crosslinking cationic compositions.
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Gray Ralph C. (Allison Park PA), Method of pretreating metal by means of composition containing S-triazine compound.
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IPC	Description
A	생활필수품
A62	인명구조; 소방(사다리 E06C)
A62B	인명구조용의 기구, 장치 또는 방법(특히 의료용에 사용되는 밸브 A61M 39/00; 특히 물에서 쓰이는 인명구조 장치 또는 방법 B63C 9/00; 잠수장비 B63C 11/00; 특히 항공기에 쓰는 것, 예. 낙하산, 투출좌석 B64D; 특히 광산에서 쓰이는 구조장치 E21F 11/00)
A62B-1/08	.. 윈치 또는 풀리에 제동기구가 있는 것

내보내기 구분	파일저장 인쇄 메일전송
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메일정보	받는사람 (필수) @ 보내는사람 (선택) @ 제목 내용 KISTI 검색결과 이메일 서비스
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Method for preparing and treating a steel substrate 원문보기

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Method for preparing and treating a steel substrate 원문보기

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