Fabric (woven – knitted – or nonwoven textile or cloth – etc.) – Coated or impregnated woven – knit – or nonwoven fabric which... – Coating or impregnation provides heat or fire protection
Reexamination Certificate
1999-02-08
2001-06-12
Morris, Terrel (Department: 1771)
Fabric (woven, knitted, or nonwoven textile or cloth, etc.)
Coated or impregnated woven, knit, or nonwoven fabric which...
Coating or impregnation provides heat or fire protection
C442S059000, C428S034100, C428S035700
Reexamination Certificate
active
06245695
ABSTRACT:
The first aspect of the invention relates to a binder composition and to an adhesive composition using the binder composition. In more detail, the first aspect of the invention concerns a binder composition, a coating, a printing ink and an adhesive composition which show excellent adhesive properties for synthetic resins having many different features.
The second aspect of the invention relates to a coating composition used for a decoration paper which is made of a polyolefin-type synthetic resin and to the corresponding coating itself used for a decoration paper made of a polyolefin-type synthetic resin and which contains the above-mentioned coating composition. In more detail, it relates to a coating and a coating composition which are able to provide a paint having excellent coatability and excellent adhesive properties for a decoration paper made of a polyolefin-type resins and also to provide a coated layer obtained by coating a decoration paper made of a polyolefin-type synthetic resin without any loss of gloss, outer appearance or the like.
The third aspect of the present invention concerns a laminated cloth obtained by coating a specified polyurethane resin on a cloth and an air bag using the laminated cloth. Particularly, the third aspect of the invention relates to a laminated cloth obtained by coating onto a woven cloth made of a synthetic resin, a polyurethane resin containing an aliphatic polyester polyol, a preparation method thereof and to an air bag for vehicles which uses such a laminated cloth.
BACKGROUND OF THE INVENTION
The first aspect of the invention will now be described.
Since synthetic resins have interesting features such as a high productivity, being capable of widely selecting in designing, having a low weight, a high rust resistance and a high impact resistance. Therefore, they are widely used as materials such as construction materials, materials for electric parts and car parts.
Above all, since the polyolefin-type resin is inexpensive and moreover has excellent moldability, chemical resistance, thermal resistance and water resistance, and further has suitable electrical features, it is widely used as industrial materials and is one of the materials whose demand is expected to grow in the future.
However, the coating or painting and the adhesion of the polyolefin-type resins on a surface are difficult because of their non-polarity and their crystallinity. The polyolefin-type resins are different from the polyurethane-type resins, the polyamide-type resins, the acrylic resins and the polyester-type resins or the like which are polar resins. For these reasons, the polyolefin surface of molded articles is activated by a plasma treatment or a gas flame treatment to improve their adhesive properties. However, these processes are complicated and involve high equipment costs and large time losses. Further, depending on the complexity of the shape of the molded articles and the influence of the pigments and the additives in the resin, there scatters an effect by the surface treatment.
As a coating method without previous treatment, the use of a primer composition has been indicated for coating polypropylene car bumpers. However, this method includes complexity of “double-coat finishing”. On the other hand, as a coating composition for a single-coat finishing, chlorinated polyolefins and cyclized rubbers or the like are used which have a high adhesion onto polyolefin-type resins. However, their weatherability, moisture resistance and gasoline resistance are low and they do not show properties to form a coated layer. For these reasons, an attempt to use a mixture of alkyd resins and acrylic resins which have excellent physical properties as coatings has been tested but, since the compatibility of the chlorinated polyolefins with the acrylic resins and the alkyd resins is inherently poor, the gloss of the coated layer is lowered and the outer appearance thereof is extremely damaged.
Several methods to improve this drawback have been disclosed. JP-A-58071966 discloses a coating composition obtained by copolymerizing an acrylic monomer with a chlorinated polyolefin. JP-A-59027968 discloses a coating composition essentially containing an isocyanate compound and a chlorinated polyolefin-modified copolymer having hydroxyl groups obtained by copolymerizing an acrylic monomer or the like having hydroxyl group with a chlorinated polyolefin. JP-A-62095372 discloses an adhesive resin composition containing as a main component an isocyanate compound and an acrylic-modified chlorinated polyolefin having hydroxyl groups obtained by copolymerization of an acrylic monomer or the like having hydroxyl group with a chlorinated polyolefin in presence of liquid-state rubber.
However, these compositions also form rigid films by painting and have low impact resistance and bending resistance.
Therefore, it may hardly be said that they form balanced coated layers.
On the other hand, several kinds of plastic films have been developed and used as materials for wrapping food. The materials for wrapping food are diversified in wrapping shapes and particularly, composite films obtained from a laminated film are widely used for protecting the object which is wrapped therein.
Generally, the ink for laminates which are used for wrapping is used and classified into two categories depending on the type of the film, at present. The first category is an ink composition used exclusively for polypropylene film which contains a chlorinated polypropylene and a chlorinated ethylene-vinyl acetate copolymer, as a main binder. The second category is used exclusively for polyester and nylon films and it is an ink composition comprising a urethane-type resin, as a main binder.
The former first category which is an ink composition containing chlorinated polypropylene and a chlorinated ethylene-vinyl-acetate copolymer, as a main binder, is explained, for example, in JP-B-86031670 and the ink composition obtained by chlorosulphonation of a copolymer of chlorinated ethylene and vinyl acetate is disclosed in JP-A-55145775. These compositions provide inks having a good adhesion onto non-treated polypropylene film and further show a good adhesion even in the case of laminate printing with the extrusion-laminating method.
However, they have a poor adhesion onto polyester and nylon films and are not suitable as printing ink used for laminates of these films.
The latter category which is an ink composition comprising a urethane-type resin, as a main binder, shows, as explained in JP-A-62153366 and JP-A-62153367 a good adhesion for the polyester and nylon films or other films having a polarity but does not show any adhesion with untreated polypropylene films and, therefore, is impossible for printing under a polypropylene-extrusion laminating method.
JP-A-64085226 disclosed, as a resin used as ink suitable for printing by the extrusion-laminating method applied to a polypropylene and for printing a laminate such as polyester and nylon films, a polyurethane-modified chlorinated polypropylene obtained by reacting a polyurethane comprising a free isocyanate group with a chlorinated polypropylene which has been modified with a vinyl monomer having hydroxyl group to introduce hydroxyl group into the above-mentioned chlorinated polypropylene.
However, in this method, the content of the chlorinated polypropylene is limited in the corresponding composition and the extrusion laminate strength of the polypropylene is insufficient.
In the existing circumstances, developments regarding strong binder compositions, easy surface treatment for various synthetic resins having different features, coating and printing inks are therefore expected.
The second aspect of the invention will now be described hereinafter.
Since the polyolefin-type resins are inexpensive and have several excellent properties such as moldability, chemical resistance, thermal resistance, water resistance and the like, they are recently widely used as a decoration paper and, particularly as a wall-decoration paper used in construction or the like.
However,
Endo Toshio
Isobe Tomohisa
Maruo Katsuya
Okitsu Kiyoshi
Daicel Chemical Industries Ltd.
Morgan & Finnegan , LLP
Morris Terrel
Torres Norca L.
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