Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – At least one aryl ring which is part of a fused or bridged...
Patent
1997-04-29
1999-03-09
Morgan, Kriellion S.
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
At least one aryl ring which is part of a fused or bridged...
524400, 524401, 524436, 528 32, 428447, C08K 308, C08K 504
Patent
active
058802126
DESCRIPTION:
BRIEF SUMMARY
FIELD OF THE INVENTION
The present invention relates to a surface coating composition which provides a cured film having excellent abrasion resistance and antistatic properties, a cured film formed from said surface coating composition, and a synthetic resin molded article coated with said cured film.
PRIOR ART
In general, synthetic resins such as acrylic resins, polycarbonate resins, vinyl chloride resins and the like have various characteristics such as easy molding properties, light weight, impact resistance, and are the like, and therefore widely used in various applications. However, appearance of the surfaces of these synthetic resins deteriorate greatly with flaws and adhered dust, since the surfaces are easily flawed and electrostatically charged. In case of transparent resins, their transparency decreases.
To impart antistatic properties to these resins, methods of compounding of antistatic agents, or application or coating of antistatic agents or conductive materials on the surfaces are known.
It is also known to form a cured film having mar resistance on the resin surfaces to reduce flaws.
Furthermore, many proposals have been made on methods for imparting both the antistatic properties and mar resistance to the resin surfaces.
For example, JP-B-4-49857 discloses a synthetic resin film or sheet comprising two laminated resin binder layers which contain a conductive powder comprising tin oxide in a high and low concentrations, respectively.
JP-B-5-8741 discloses a synthetic resin molded article which is coated with a layer of a conductive resin having a cationic quaternary ammonium salt functional group and a layer of a cured polymer crosslinked by irradiation of actinic radiation.
However, the layer containing the conductive powder as disclosed in JP-B-4-49857 has insufficient transparency, and is not suitable for applications in which the resin molded articles are required to have light transmission.
The antistatic properties imparted by the conductive resin layer which is disclosed in JP-B-5-8741 appear through the utilization of moisture in an atmosphere. Therefore, it is often pointed out that the effect of such layer varies greatly with the moisture content in the atmosphere. Furthermore, the production process is complicated, since the layer of the conductive resin for imparting the antistatic properties and the layer of the crosslinked cured polymer for increasing the surface hardness are laminated.
SUMMARY OF THE INVENTION
One object of the present invention is to provide a surface coating composition which can easily form a cured film even in the industry, and which exhibits good antistatic properties and mar resistance independently of moisture without deteriorating optical properties inherent in the resins.
Another object of the present invention is to provide a cured film which exhibits good antistatic properties and mar resistance independently of moisture without deteriorating optical properties inherent in the resins, and a transparent resin molded material coated with such the cured film.
These and other objects and effects will be made apparent from the following descriptions.
Accordingly, the present invention provides consisting of i) photopolymerizable compounds having at least two (meth)acryloyloxy groups in a molecule and ii) heat polymerizable silane compounds having at least two functional groups selected from the group consisting of ether groups and ester groups in a molecule, ##STR1## wherein R.sup.1 represents a monovalent organic group, R.sup.2 to R.sup.4 represent independently an alkylene group, R.sup.5 represents a hydrogen atom or a monovalent organic group, m is an integer of 0 to 100, n is an integer of 1 to 100, and each of a and b is an integer of 0 to 100, provided that a and b are not 0 (zero) at the same time, and wherein sequences of the --Si(R.sup.1).sub.2 --O-- and --Si(R.sup.1)(R.sup.2 O--)--O-- groups and of the --R.sup.3 O-- and --R.sup.4 O-- groups are arbitrary, and O+R.sup.4 O! which is (moles of the organopolysiloxane) x (the total number o
REFERENCES:
patent: 4543398 (1985-09-01), Bany et al.
patent: 4606933 (1986-08-01), Griswold et al.
Matsumoto Akira
Nakagawa Yoshimi
Shimanoe Hisao
Yasunori Yukio
Morgan Kriellion S.
Sumitomo Chemical Company Limited
LandOfFree
Surface coating composition, cured film thereof and synthetic re does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Surface coating composition, cured film thereof and synthetic re, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Surface coating composition, cured film thereof and synthetic re will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1321997