Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – Compositions to be polymerized by wave energy wherein said...
Patent
1997-08-18
2000-08-22
Berman, Susan
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
Compositions to be polymerized by wave energy wherein said...
522 74, 522 79, 522 80, 522107, 522182, 522121, 523135, 106733, C08J 328, C08K 318, C08K 322
Patent
active
061073601
DESCRIPTION:
BRIEF SUMMARY
TECHNICAL FIELD
This invention relates to a solar radiation(heat wave or heat ray) blocking resin composition curable with active radiation rays such as ultraviolet rays and the like, which comprises solar radiation absorbable fine particles of an inorganic metal having a primary particle size of 0.5 .mu.m or less and an active radiation ray polymerizable (meth)acrylate having a (meth)acryloyl group, and to scratch resistable films coated therewith.
Solar radiation blocking materials have been extensively researched and developed, particularly in recent years and can be used in photo-sensitive materials to semiconductor laser beam or the like rays having a wave length of the near infrared ray region as the light source, in information recording materials such as recording materials for photodisc and the like and in windows of buildings, car windows and the like as infrared cutting filters or solar radiation blocking films.
BACKGROUND ART
Chrome, cobalt complex salt thiol nickel complexes, anthraquinone derivatives and the like are known in the prior art as near infrared ray absorbable, light transmitting materials. Also known is a solar radiation reflecting film in which aluminum, copper or the like metal is vacuum-deposited on one surface of a polyethylene terephthalate film. Since such an infrared rays reflecting film well transmits visible rays but reflects near infrared--infrared rays, when applied to a glass of window or the like opening part of buildings, it exerts daylight controlling and heat insulating effects by reflecting solar radiation of the sun light or heat radiation from the interior of the room, keeping its transparency. Transparent, thermal insulation films having such characteristics are applied to windows of buildings, freezer-refrigerator show cases, thermal insulating surfaces, car windows and the like and useful for example in improving dwelling environment and saving energy.
However, solar radiation blocking materials of the prior art, when made solely of organic materials, have a disadvantage in that their initial properties are deteriorated as the environmental conditions change or with the lapse of time, due to their poor durability (weather resistance or the like). On the other hand, those which are made of complex materials have good durability, but they not only absorb rays of near infrared region spectra but also absorb visible region spectra and the compounds themselves are strongly colored, and thus their applications are limited.
Also, solar radiation reflecting films of the prior art reflect not only infrared rays but also visible rays by the metal deposited, thus posing a fatal disadvantage in that the interior of a room becomes dark when they are applied to window glass and the like. In addition, since a large apparatus is necessary to form such a deposited layer of metals, their production cost becomes high and their general use as final products therefore becomes limited.
In order to form a layer or coat of solar radiation absorbents, the solar radiation absorbing agents must be uniformly dispersed in resins. As binders of the resin, acrylic resin, polyester resin, alkyd resin, polyurethane resin, epoxy resin, amino resin, vinyl resin or the like thermoplastic resins are generally used. However, these resins to be used as the binder are apt to get flaws due to poor scratch resistance of the coated layer. In order to improve scratch resistance of these films to a practical level, it is desirable to carry out a hard coating treatment on the outer surface of reflecting film. However, such a process in which a solar radiation absorbing material is coated and then its outer surface is again subjected to hard coating leads to higher cost and poorer general use.
DISCLOSURE OF THE INVENTION
The inventors of the present invention have conducted intensive studies on a solar radiation blocking material which has an absorption at the near infrared--far infrared region, less coloring and excellent durability, and found that a solar radiation blocking resin composition cura
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Izumi Kaoru
Kaneko Shoichi
Sakurai Hiroshi
Yoshioka Kenichiro
Berman Susan
Nippon Kayaku Kabushiki Kaisha
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