FLAT ROLLED MAGNETIC STEEL SHEET OR STRIP HAVING ITS SURFACE COATED FOR BONDING

Title:

FLAT ROLLED MAGNETIC STEEL SHEET OR STRIP HAVING ITS SURFACE COATED FOR BONDING

Document Type and Number:

WIPO Patent Application WO/2004/070080

Kind Code:

A1

Abstract:

A flat rolled magnetic steel sheet or strip having its surface coated for bonding by heating and pressurization, which flat rolled magnetic steel sheet or strip, even at thin coating, permits bonding over the whole surface of steel sheet and reduces bonding strength lowering. In particular, a flat rolled magnetic steel sheet or strip having its surface coated for bonding, comprising a flat rolled magnetic steel sheet or strip and, superimposed on a surface thereof, an insulating film exhibiting bonding capability upon application of heat and pressure, characterized in that the insulating film is composed of a mixture of an epoxy resin of 80 to 150&ring C glass transition temperature (Tg) or modification product thereof and an epoxy resin hardening agent wherein a particulate polymer of 0.01 to 0.5 μm particle diameter is dispersed. The flat rolled magnetic steel sheet or strip having its surface coated for bonding is further characterized in that the Tg of the particulate polymer is in the range of 10 to 80&ring C, and still further in that the particulate polymer is an acrylic resin.

More Like This:

WO/2023/093111	HIGH CR-SI ALLOYED COATING-FREE HOT FORMING STEEL AND HOT ROLLING PREPARATION METHOD THEREFOR
WO/2005/028135	METAL FIBER COMPRISING MORE THAN ONE METAL OR METAL ALLOY

Inventors:

TAKEDA KAZUTOSHI (JP)
MURAKAMI AKIHIRO (JP)
MORIMOTO MASARU (JP)

Application Number:

PCT/JP2004/000802

Publication Date:

August 19, 2004

Filing Date:

January 29, 2004

Export Citation:

Click for automatic bibliography generation Help

Assignee:

NIPPON STEEL CORP (JP)
TAKEDA KAZUTOSHI (JP)
MURAKAMI AKIHIRO (JP)
MORIMOTO MASARU (JP)

International Classes:

B21C37/02; B32B15/08; C09D133/08; C09D163/00; H01F1/18; C08L33/08; C08L63/00; (IPC1-7): C23C22/00; B05D7/24; B32B15/08; C09D133/08; C09D163/00; C09J133/08; C09J163/00

Foreign References:

JPH06182297A	1994-07-05
JPH0824779A	1996-01-30
JPH07256206A	1995-10-09
JPH07308990A	1995-11-28

Attorney, Agent or Firm:

Aoki, Atsushi (ISHIDA & ASSOCIATES Toranomon 37 Mori Bldg., 5-1, Toranomon 3-chome, Minato-ku, Toky, 23 JP, JP)

Download PDF:

View/Download PDF PDF Help

Previous Patent: METHOD OF FORMING A Ta2O5 COMPRISING LAYER

Next Patent: METHOD AND COMPOSITION FOR CREATION OF CONVERSION SURFACE