JPH05310047A - Flame-retardant waterproof body cover - Google Patents

Abstract

(57) [Summary] [Object] An object of the present invention is to provide a flame-retardant waterproof body cover excellent in flame retardancy, waterproofness, water repellency, texture, and the like. [Structure] A back surface of a fabric made of flame-retardant polyester fibers is coated with a treatment agent in which a heat-meltable polyurethane resin and a specific phosphate compound are mixed in a weight ratio of 90:10 to 60:40. Characteristic flame-retardant waterproof body cover.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a waterproof cloth, and its object is to provide a flame-retardant waterproof body cover for vehicles such as motorcycles and automobiles, which are excellent in flameproofness, waterproofness, water repellency and texture. To do.

[0002]

2. Description of the Related Art Polyester fiber is widely used as a body cover because it has features such as high strength, low elongation, and hydrophobicity, which causes little increase in weight when wet, little dimensional change, and easy handling. Has been. Ordinary body covers are made by coating polyester resin with a mixed resin of acrylic ester resin and aluminum or pigment after water repellent treatment with organic fluorinated polymer to impart waterproofness, water repellency, heat shield, fashionability, etc. It is commercialized. The only drawback of the body cover is that the polyester fiber itself melts and falls even if it flares due to the flame, so it does not reach combustion, but the resin, aluminum, and pigments, etc. prevent the melt-falling property from evaporating and burning once flamed. It easily burns. Currently available polyester body covers are waterproof and water repellent, but not flameproof.

Recently, there has been a case where a body cover of a vehicle parked under an eaves fire is ignited and a house fire occurs, which is becoming a social problem, and a demand for flame retardancy of the body cover is extremely increased. In the case of polyester fiber coated cloths for general body covers, water-repellent agents such as fluorine-based and silicone-based agents are used to prevent the back coating of the coating resin from the back surface of the cloth. Remarkably inhibits flammability. Further, metal powder such as aluminum for imparting heat-shielding properties and fashionability and coloring pigments also cause a significant decrease in flameproofness.

[0004] Conventionally, as a flame retarding method for a coated fabric made of polyester fiber, a method of applying a halogenated phosphate ester flame retardant before coating and then coating with a mixed resin of polyurethane resin and halogenated phosphate ester, chloride A method of coating with a mixed resin of vinyl resin and antimony trioxide is known.

In the former case, aluminum, pigment, etc. are not mixed, so-called clear coating provides flame retardancy, but when aluminum, pigment, etc. are mixed as in a body cover, aluminum, pigment, etc. are in resin. And the flame retardancy is insufficient because the melt-falling property of the polyester fiber is hindered. In the latter case, a large amount of resin (usually 50% by weight or more) needs to be applied to the base fabric, which inevitably results in high weight and is not preferable in terms of feeling and handleability.

The inventors of the present invention have made earnest studies in order to make the polyester fiber body cover satisfy flame retardancy, waterproofness, water repellency, and also have heat shieldability and fashionability. As a result, the material itself is flame retardant. By using a heat-fusible polyurethane resin and a specific phosphate compound on the back surface of a fabric made of polyester fiber with excellent properties, it is possible to obtain excellent flame retardancy, texture, etc. without impairing conventional waterproofness, water repellency, and fashionability. The inventors have found that a flameproof body cover can be obtained, and have reached the present invention.

[0007]

SUMMARY OF THE INVENTION It is an object of the present invention to provide a flame-retardant waterproof body cover which is excellent in flame retardancy, waterproofness, water repellency, texture and the like.

[0008]

According to the present invention, (claim 1) a heat-meltable polyurethane resin and a phosphate compound represented by the following general formula (I) are provided in a weight ratio on the back surface of a cloth made of flame-retardant polyester fiber. A flame-retardant waterproof body cover, characterized by being coated with a treating agent mixed at 90:10 to 60:40,

[0009]

[Chemical 2]

(Here, Z ₁ , Z ₂ and Z ₃ are selected from an aliphatic group, an aromatic group, a halogenated aliphatic group in which a part of hydrogen atoms are substituted with a halogen atom, and a halogenated aromatic group. It is a base).

The flame-retardant polyester fiber is mainly composed of ethylene terephthalate, and a phosphorus compound represented by the following general formula (II) or general formula (III) is used as a phosphorus element in an amount of 0.3 to 1.0% by weight. It is polymerized.

[0012]

[Chemical 3]

(Wherein R represents a saturated, open-chain or cyclic alkylene, arylene or aralkylene residue, and R ₁ represents an alkyl group having up to 6 C atoms, an aryl group or an aralkyl group. The radicals R and / or R ₁ have one or more heteroatoms, in particular F, Cl, B.
It may contain r, O and S. R ₂ and R ₃ represent an alkyl group having 1 to 18 carbon atoms, aryl, or a hydrogen atom. )

[0014]

[Chemical 4]

(However, R and R ₁ are the same or different groups and are a hydrogen atom, a halogen atom or a hydrocarbon group having 6 or less carbon atoms, and R ₂ and R ₃ are the same or different groups, a hydrogen atom and a carbon group. Hydrocarbon group of number 7 or less or (—R ₄ O) rH
Represents a group represented by. R ₄ is an ethylene, propylene or butylene group, r is an integer of 1 to 10, and 1 and m are 0.
Alternatively, it is an integer of 1 to 4, and n is 0, 1 or 2. ) Specific examples of the phosphorus compound represented by the general formula (II) include the following (IV) 2-carboxy-ethyl-methyl-phosphinic acid and its cyclic anhydride.

[0016]

[Chemical 5]

The cloth means woven fabric, knitted fabric, moquette and the like.
The hot-melt polyurethane resin is a linear polyurethane having no cross-linking, and refers to all so-called one-pack type urethanes obtained by reacting a polyether or polyester with a diisocyanate.

Examples of the phosphate compound represented by the general formula (I) include trioctyl phosphate, tris (dichloropropyl) phosphate, cresyl diphenyl phosphate, tricresyl phosphate and the like, which are liquid at room temperature. Goods for softening the texture.

The mixing ratio of the heat-meltable polyurethane resin and the phosphate compound is in the range of 90:10 to 60:40 by weight. If the proportion of the urethane resin exceeds this range, the flameproofness becomes poor, and conversely if it is too small, the film strength becomes weak and the waterproofness becomes poor.

In the field of the body cover, which is the object of the present invention, metal powders and / or pigments such as aluminum are used for heat shielding and fashionability. The addition amount of these is 3 to 20% by weight with respect to the urethane resin. If it is too small, the effect of heat shield is small, and if it is too large, the waterproof flame retardancy is lowered. The wax and the polyethylene-based water repellent are used in an amount of 0.5 to 5.0% by weight based on the urethane resin in order to impart water repellency to the coating surface. If it is too small, the water repellent effect is insufficient, and if it is too large, the texture becomes poor.

Further, in order to improve the light resistance of the coating agent, it is desirable to use an ultraviolet absorber or an antioxidant such as benzotriazole or benzophenone type which is usually used. The coating amount of the treatment agent is 10 to 50 g / solid matter.
It is necessary to be in the range of m ² . If it is less than 10 g / m ² , the waterproof property is insufficient, and if it is more than 50 g / m ² , the texture is hardened and the handleability becomes poor. The viscosity of the treating agent is 10,000 to 50 with a B-type viscometer by appropriately using a thickener such as ammonium salt of acrylic acid, CMC (carboxymethyl cellulose), polyvinyl alcohol, etc.
It is desirable to adjust to 000 cps. If the viscosity is too low, the coating resin will bleed out to the back surface of the sheet and the quality will be deteriorated. If it is too high, the adhesiveness between the cloth and the resin will be deteriorated and the resin will peel off during use.

Next, as a coating method, knife coating, kiss roll, gravure coating, etc. may be used. Drying after application is 30 at 100-170 ° C
It suffices to perform it for about 1 second to 15 minutes. Furthermore, if water repellent treatment is performed with an organic fluoropolymer water repellent before coating, water repellency can be imparted to the non-coated surface (back surface) and at the same time, in the case of water-based resin, penetration of resin to the back surface can be prevented ..

[0023]

According to the present invention, it is possible to obtain a body cover for motorcycles and automobiles, which is excellent in flame retardancy, waterproofness, water repellency, heat insulation, fashionability, and feeling.

[0024]

EXAMPLES The following examples show the method for producing the flame-retardant waterproof body cover of the present invention. All parts in the examples mean% by weight. The following characteristics were evaluated by the following methods. 1) Flame retardancy; Fire protection method 45 ° micro burner flame 3 second test (after flame second) and coil method 2) Water resistance: JIS L1092-1977 Water pressure resistance method 3) Water repellency: JIS L1092-1977 Spray method 4) Light resistance Property: JIS L1096-1979 Sunshine weather meter Evaluated by the retention rate (%) of tear strength (Pendulum method) after 100 hours irradiation 5) Feeling: Hard, soft, good by sensory test 6) Backing agent Adhesion amount :: Calculated by change in weight before and after backing.

[0025]

[Examples 1 to 4 and Comparative Example 1] The warp yarn and the weft yarn each have a cyclic anhydride of 2-carboxy-ethyl-methylphosphinic acid 2-methyl-2,5-dioxo-1oxo-2phosorane at 0.70% as phosphorus. Polymerized flame-retardant polyester fiber (7
5de / 24fil) and has a vertical density of 110 lines / in,
Taffeta with a weft density of 90 pieces / in and a basis weight of 65 g / m ² (refined) was used as a fluorine-based water repellent (AG710 manufactured by Meisei Chemical Co., Ltd.).
% Aqueous solution, squeezed with mangle (squeeze ratio of 40%), and then dried at 130 ° C. for 5 minutes. Then, to the treated cloth, acrylic acid and ammonia water were added in appropriate amounts to the coating agent shown in Table 1 to increase the viscosity to 30,000 cps and uniformly coated by knife coating.
Dry for minutes. The physical properties of the backing cloth are also shown in Table 1.

[0026]

[Table 1]

[0027]

Example 5 Instead of the flame-retardant polyester fiber used in Example 2, a flame-retardant polyester fiber obtained by copolymerizing 0.6% of a carboxylic acid represented by the following formula (V) as phosphorus as an acid component of polyester was used. Except for the above, the same process as in Example 2 was carried out.

[0028]

[Chemical 6]

The results are shown in Table 2.

[0030]

Comparative Example 2 The same treatment as in Example 3 was carried out except that the flame-retardant polyester fiber used in Example 1 was replaced with ordinary polyester fiber containing no flame retardant.

The results are shown in Table 2.

[0032]

[Comparative Example 3] Instead of the Hydran HW111 used in Example 2, Sumitex A-MH2000 (Sumitomo Chemical Co., Ltd.)
The same treatment as in Example 2 was carried out except that a polyacrylic ester resin) was used.

The results are shown in Table 2.

[0034]

[Table 2]

─────────────────────────────────────────────────── ─── Continuation of front page (51) Int.Cl. ⁵ Identification code Office reference number FI technical display area // D06M 101: 32

Claims (6)

[Claims] 1. A heat-meltable polyurethane resin and the following general formula (I) are provided on the back surface of a cloth made of flame-retardant polyester fiber.
The weight ratio of the phosphate compound represented by
A flame-retardant waterproof body cover characterized by being coated with a treatment agent mixed at 60:40. [Chemical 1] (Here, Z ₁ , Z ₂ and Z ₃ are aliphatic groups, aromatic groups,
(A group selected from halogenated aliphatic groups and halogenated aromatic groups in which some of the hydrogen atoms have been replaced by halogen atoms) 2. The flame-retardant waterproof body cover according to claim 1, which is treated with an organic fluorinated polymer water repellent before or after coating. 3. The flame-retardant waterproof body cover according to claim 1, wherein metal powder or pigment is mixed in the treating agent in an amount of 3 to 20% with respect to the treating agent. 4. The flame-retardant waterproof body cover according to claim 1, wherein a wax and / or a polyethylene water repellent is mixed in the treatment agent in an amount of 0.5 to 5% by weight based on the treatment agent. 5. The treating agent is applied to the back surface of the fabric as a solid content of 10 parts.
5. The coating composition is applied to about 50 g / m ² and then dried.
Flame-retardant waterproof body cover of any of ~ 4. 6. The viscosity of the treating agent is 10,000 to 50,000.
The flame-retardant waterproof body cover according to any one of claims 1 to 5, which is cps.