公开(公告)号：EP1339503A4

公开(公告)日：2004-06-23

申请号：EP01916454

申请日：2001-03-07

Applicant: MACDERMID INC

Inventor： WOJCIK GERALD ,  JENKINS MELVIN R

IPC: B05D7/14 ,  B05D3/10 ,  B05D7/00 ,  C23C22/56 ,  C23C22/78 ,  C23C22/48 ,  C23G1/02

CPC classification number: C23C22/78 ,  B05D3/102 ,  B05D7/51 ,  B05D2202/25 ,  C23C22/56

Abstract: A process is described for increasing the adhesion of organic coatings to metal surfaces, particularly aluminum and aluminum alloys. The process involves the utilization of an adhesion promoting composition in treating the metal surface prior to application of the organic coating. The adhesion promoting composition comprises a nitro sulfonic acid. A chromating step is optionally employed.

公开(公告)号：EP1492902A4

公开(公告)日：2005-06-15

申请号：EP03708992

申请日：2003-02-07

Applicant: MACDERMID INC

Inventor： WOJCIK GERALD ,  GIRARD JUSTIN ,  BERRY ROBERT ,  BAUER RICHARD

IPC: C23C22/40 ,  C23C22/42 ,  C23C22/44 ,  C23C22/48

CPC classification number: C23C22/44 ,  C23C22/40

Abstract: A method of forming a conversion layer on a metallic surface and a composition usable in the method are provided. The composition is an aqueous solution comprising a source of tungstate ions and a soluble material comprising zirconium. The method provides a conversion coating on a surface that can then be painted or otherwise treated. The conversion coatings of the present invention are minimally affected by heating and/or baking, unlike chromate conversion coatings of the prior art.

Abstract translation: 提供了在金属表面上形成转换层的方法和可用于该方法的组合物。 该组合物是包含钨酸根离子源和含锆的可溶性材料的水溶液。 该方法在表面上提供转化涂层，然后可以对其进行涂漆或其他处理。 与现有技术的铬酸盐转化涂层不同，本发明的转化涂层受加热和/或烘烤的影响最小。

公开(公告)号：EP1483429A4

公开(公告)日：2005-04-20

申请号：EP02733925

申请日：2002-04-01

Applicant: MACDERMID INC

Inventor： BENGSTON JON ,  WOJTASZEK MARK ,  WOJCIK GERALD ,  DIMARCO MASSIMO

IPC: C23C22/40 ,  C23C22/42 ,  C23C22/44

CPC classification number: C23C22/42 ,  C23C22/44

Abstract: A conversion coating composition and method of applying the conversion coating composition to magnesium and magnesium alloy articles prior to painting to prevent corrosion. The conversion coating composition comprises a source of vanadate ions, a material comprising phosphorus, and nitric acid or a source of nitrate ions. In addition, the composition may also contain boric acid or a source of borate ions and a source of fluoride ions or a source of fluoroborate ions.

公开(公告)号：EP1406984A4

公开(公告)日：2004-08-04

申请号：EP02787176

申请日：2002-04-04

Applicant: MACDERMID INC

Inventor： WOJCIK GERALD

IPC: C09D105/00 ,  C08B37/08 ,  C09D5/08 ,  C09D7/12 ,  C09D105/08 ,  C23C22/56 ,  C23F11/00 ,  B05D3/00 ,  C08B37/00 ,  C09K15/06 ,  C09K15/12 ,  C09K15/32

CPC classification number: C23C22/56 ,  C08B37/003 ,  C09D105/08

Abstract: A composition and process for inhibiting the corrosion of metallic substrates is revealed. The process utilizes an aqueous treatment solution comprising chitosan which has been reacted with an acid selected from the group consisting of phosphonic acids, carboxylic acids and mixtures thereof. The composition and process are particularly useful in providing corrosion protection for aluminium alloys.