Metal coating method excellent in corrosion resistance and article coated therewith
申请人:Shimasaki Akihiko
公开号:US20050214470A1
公开(公告)日:2005-09-29
A metal coating method excellent in corrosion resistance, which comprises: using a cationic coating composition containing a base resin and a curing agent; and forming a film onto such as a metal having a glass transition point (Tg) of from 60 to 95° C., and an oxygen permeability of from 5×10
−13
(cc·cm/cm
2
·sec·cmHg) to 5×10
−11
(cc·cm/cm
2
·sec·cmHg) at a film thickness of 20 μm. The base resin is a xylene-formaldehyde-resin-modified amino-containing epoxy resin obtained by reacting an epoxy resin (1) having an epoxy equivalent of from 180 to 2500 with a xylene formaldehyde resin (2) and an amino-containing compound (3). The curing agent is a blocked polyisocyanate compound obtained by blocking an isocyanate group of a polyisocyanate compound with a blocking agent.
A coating composition used for coating of a steel material and/or aluminum material comprises a corrosion inhibitor, a base resin and a curing agent. The corrosion inhibitor may be selected from cerium compounds, lanthanum compounds, molybdate salt compounds, gluconic acid derivative salts, porous base materials, triazole compounds, thiazole compounds, tetracyclines, and metal phosphate salt compounds of ascorbic acid. The base resin may include a xylene-formaldehyde-resin-modified amino-containing epoxy resins obtained by reacting an epoxy resin having an epoxy equivalent of from 180 to 2500 with a xylene formaldehyde resin and an amino-containing compound. The curing agent may be a blocked polyisocyanate compound obtained by blocking an isocyanate group of a polyisocyanate compound with a blocking agent.
The present invention provides a curable liquid epoxy resin composition useful as underfill material for semiconductor devices, which comprises (a) an epoxy resin component, (b) an aromatic hydrocarbon formaldehyde resin, (c) a curing agent, and, (d) at least one filler having an average particle size of 5 nm to 100 μηη. The aromatic hydrocarbon formaldehyde resin can lower the Tg of the curable liquid epoxy resin composition without affecting the CTE and/or modulus substantially once it has been cured.
[EN] ADHESIVE SHEET FOR BICYCLE RIMS<br/>[FR] FEUILLE ADHÉSIVE POUR JANTES DE BICYCLETTE<br/>[JA] 自転車リム用粘着シート
Polyaddition product and cationic electrodeposition coating comprising said polyaddition product
申请人:Iijima Hideki
公开号:US20060131543A1
公开(公告)日:2006-06-22
This invention provides a polyaddition product formed from amine compound having polyoxyalkylene chain(s) and monoepoxysilane, which has a weight-average molecular weight within a range of 250-10,000, as an additive of favorable paint stability. The polyaddition product gives, when used in cationic electropaints, coating film which is excellent in coating operability such as finished appearance, oil-cissing resistance, water mark insensibility; sealer adherability; and corrosion resistance.