PURPOSE: To obtain a magnetic recording medium free from pinholes, the peeling of a coating film, and the falling of powder, by using as a binder a radiation-sensitive composite which contains a compound having a low-molecular-weight acrylic double bond.
CONSTITUTION: Magnetic paint is applied onto a base and irradiated with radiation, such as electron beams, neutron beams and γ rays to obtain a magnetic recording medium which has a magnetic layer of cross-linking structure. This magnetic paint uses as a binder a 80:20W20:80 ratio mixture of a compound shown by the right general formula and a compound which has at least two acrylic double bond in each molecule of (meth)acrylate oligoester, meth)acrylate oligourethane, etc., and also has 1,000W6,000 molecular weight and 80W3,000 molecular weight per double bond.
SOMEZAWA MASASHI
TAKAMIZAWA MINORU
INOUE KACHIO
YOSHIOKA HIROSHI
SHINETSU CHEM IND CO
| JPS56124119A | 1981-09-29 | |||
| JPS56122802A | 1981-09-26 |