JPH11209598A - Resin composition - Google Patents

Abstract

(57) [Problem] To provide a resin composition having good adhesiveness. A resin composition comprising 0.1 to 150 parts by weight of a resin having an epoxy group or an epoxy residue per 100 parts by weight of a resin component made of polycarbonate and / or polyester.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a resin composition used for housing materials such as various trays, kitchen systems, bathtubs, wall materials, table tops, flooring materials, furniture, interior decoration materials, display materials and the like.

[0002]

2. Description of the Related Art Conventionally, trays, kitchen system members,
For housing materials such as table tops, inorganic materials such as ceramics, resin compositions containing vinyl chloride as a main component, and thermosetting resin compositions containing inorganic fillers have been mainly used. However, inorganic materials have poor moldability and are difficult to recycle, and vinyl chloride resin compositions have a risk of generating toxic gases during incineration, and thermosetting resin compositions have poor processability. There were problems such as difficulty in recycling.

[0003]

[0005] Expectations for recyclable materials are increasing in view of recent environmental problems and the like.
Therefore, a resin composition in which an inorganic filler is blended with an engineering plastic such as polycarbonate or polyester has been proposed. For example, JP-A-6-27966
No. 5 discloses a molding resin composition having a ceramic-like feel by mixing barium sulfate with a polycarbonate resin. JP-A-62-174261
JP-A-6-212070 discloses a material having good light diffusibility by blending glass powder with a polycarbonate-based resin, and JP-A-6-212070 discloses a reinforcement of good transparency obtained by blending glass fibers with a polycarbonate resin. Resin compositions have been proposed.

However, since these resin compositions are mainly composed of engineering plastics, when a thick sheet is formed, the price is higher than that of a conventional resin composition. However, there is a problem in that the adhesiveness is poor and they are peeled off even when they are laminated.

[0005]

Means for Solving the Problems As a result of intensive studies in view of the above problems, the present inventors have found that a resin composition in which the above-mentioned disadvantages have been improved can be obtained by blending a specific resin, and have reached the present invention. . That is, the gist of the present invention resides in a resin composition obtained by mixing 0.1 to 150 parts by weight of a resin having an epoxy group or an epoxy residue with respect to 100 parts by weight of a resin component made of polycarbonate and / or polyester.

[0006]

BEST MODE FOR CARRYING OUT THE INVENTION The resin composition of the present invention comprises a polycarbonate and / or polyester and a resin having an epoxy group or an epoxy residue. As polycarbonate (hereinafter, referred to as “PC”), PC and a copolymer containing PC as a main component are used.

Examples of the polyester include polybutylene terephthalate (hereinafter, referred to as “PBT”), polyethylene terephthalate (hereinafter, referred to as “PET”), polyarylate (hereinafter, referred to as “PAR”), and copolymers mainly containing these components. Can be Either one of polyester and polycarbonate may be used, but it is preferable to use two or more of them in order to balance heat resistance, solvent resistance, sheet moldability, workability, and the like.

The resin having an epoxy group or an epoxy residue may be any resin which can be blended substantially homogeneously with polyester or PC and has an epoxy group or an epoxy residue. For example, a resin obtained by introducing an epoxy group or an epoxy residue into a polymer containing butadiene, styrene, or the like as a main component may be used. As the resin composition of the present invention, 0.1 to 150 parts by weight, preferably 5 to 100 parts by weight, of a resin having an epoxy group or an epoxy residue based on 100 parts by weight of a resin component composed of PC and / or polyester, Preferably it is 10 to 90 parts by weight, most preferably 15 to 80 parts by weight.

When the amount of the resin having an epoxy group or an epoxy residue is less than 0.1 part by weight, the adhesiveness is insufficient,
On the other hand, if it exceeds 150 parts by weight, the rigidity of the molded article may be reduced when the resin composition is molded. The mixing ratio of each component is generally 0 to 95% by weight, preferably 30 to 60% by weight of PC, and usually 0 to 95% by weight, preferably 15 to 55% by weight of polyester. The resin has usually 5 to 60% by weight, preferably 10 to 50% by weight, and more preferably 15 to 45% by weight.

[0010] When the amount of PC is small, the impact resistance and the moldability are inferior. On the other hand, when the amount of PC is large, the chemical resistance is deteriorated. Of the polyesters, if the amount of PBT is small, the chemical resistance deteriorates, and if the amount is large, the heat resistance deteriorates, which is not preferable. On the other hand, if the amount of PET is too small, the sheet formability and workability deteriorate, and if the amount is too large, a problem may occur in impact resistance. If the amount of the resin having an epoxy group or an epoxy residue is too small, the improvement of adhesiveness is insufficient, and if the amount is too large, the rigidity is lowered, which is not preferable.

If necessary, other polymers such as acrylonitrile-butadiene-styrene copolymer resin, polystyrene, polyetherimide, and polyolefin may be added to these resin components. In the resin composition of the present invention,
You may mix | blend an inorganic filler. By blending the inorganic filler, the rigidity can be improved and the surface design can be changed.

As the inorganic filler, barium sulfate, calcium sulfate, calcium carbonate, magnesium carbonate, aluminum hydroxide, magnesium hydroxide and silicon oxide are used.
Oxides containing not less than% by weight are exemplified. The oxide containing 20% by weight or more of silicon oxide preferably contains 30% by weight or more of silicon oxide, and specific examples thereof include glass, silica, cement, quartz, fly ash, clay, and talc. Examples of the glass include a fibrous shape, an amorphous powder obtained by pulverizing a plate glass, and a bead shape, but an amorphous or bead shape is preferable.

As the inorganic filler, barium sulfate, calcium carbonate, glass and silica are preferably used.
These inorganic fillers may be previously surface-treated with a silane compound, an epoxy compound, a urethane compound, or the like. The average particle size of these inorganic fillers is usually 1
１００100 μm, preferably 2-20 μm. If the average particle size is too large, the surface smoothness of the molded product is impaired, and if it is too fine, the surface gloss becomes too large, and there is a problem in the design when used in the surface layer of the molded product.

The compounding amount of the inorganic filler is 100
0 to 150 parts by weight, preferably 5 to parts by weight,
To 100 parts by weight, more preferably 10 to 70 parts by weight. The resin composition of the present invention may contain a coloring agent. Discoloration and contamination of the resin composition can be suppressed by adding a colorant.

Examples of the coloring agent include dyes, pigments, non-dispersible pigments and the like, and pigments and non-dispersible pigments are preferably used. Non-dispersible pigments usually have an average particle size of 0.3 to 1
It refers to a granular material, fibrous material, scale-like material or the like having a visible size of 0 mm, preferably 0.5 to 2 mm, and is distinguished from an inorganic filler in terms of an average particle size. Examples of the non-dispersible pigment include mica, carbon fiber, colored thermosetting resin granules, metal powder, and the like, and mica is preferably used. The compounding amount of the non-dispersible pigment is usually 0.5 to 5 parts by weight, preferably 1 to 3 parts by weight with respect to 100 parts by weight of the resin composition.
Parts by weight.

The pigment refers to a powder of an inorganic compound having a strong hiding power, and the white pigment includes titanium oxide, zinc oxide and zinc sulfide. Note that these white pigments are not included in the inorganic filler. When a non-dispersible pigment is used, a composition excellent in design can be obtained by using a white pigment in particular. The amount of the pigment varies depending on the hiding power of the pigment, but usually 0.1 to 2% by weight of titanium oxide and 1 to 2% by weight of zinc sulfide based on 100 parts by weight of the resin composition.
６6% by weight, zinc oxide is 1-3% by weight.

The resin composition of the present invention includes phosphite-based, phosphate-based antioxidants such as benzotriazole-based and benzophenone-based ultraviolet absorbers, stabilizers, lubricants, toning agents, antioxidants, antistatic agents, An additive such as an antibacterial agent may be blended. Since the resin composition of the present invention has excellent adhesiveness, it has excellent adhesiveness to resins such as polyester, PC, and activated polyolefin, and metals such as aluminum, and is therefore preferably used for a multilayer laminated sheet. Although the resin composition of the present invention may constitute the outermost layer of a multilayer sheet, the resin composition of the present invention can be bonded to any kind of material, and thus is used for bonding resins having low adhesiveness to each other. It can be used as a layer. Specifically, as the multilayer laminated sheet, a resin containing polyester or PC /
Examples include the resin composition / activated polyolefin resin of the present invention.

As a method for producing a sheet from the resin composition of the present invention, the sheet is formed by a conventionally known technique. For example, using an extruder, a twin-screw extruder, a mixing roll, a Brabender, etc., kneading PC, polyester, a resin having an epoxy group or an epoxy residue and an inorganic filler, a coloring agent, and an additive as necessary. After obtaining the resin composition, T
Extruded into a sheet using an extrusion device equipped with a die,
A method of forming a sheet using a forming roll may be used.

When a laminated sheet is formed, the sheet composed of the resin composition of the present invention extruded from the T-die is in a molten state, and the sheet composed of the resin composition of the present invention and the sheet constituting another layer are mixed. And a method in which a sheet made of the resin composition of the present invention formed in advance and a sheet constituting another layer are pressure-bonded while heating, and the like.

[0020]

The present invention will be described below with reference to examples. At the compounding amounts (weight ratio) shown in Table 1, PC, PET,
PBT, a resin having an epoxy group, a colorant, and an additive are supplied to a twin screw extruder having a diameter of 40 mm, and are kneaded at 260 ° C., and then melted and kneaded at a temperature of 260 ° C.
255 ° C), extruded into a sheet form, cooled between two metal rolls (60 ° C), and taken off to obtain a thickness of about 1
mm sheet was formed.

A 2 mm-thick polyolefin sheet ("Novatech AP" manufactured by Mitsubishi Chemical Corporation) is placed between the two obtained sheets.
AX199P ”), a three-layer laminated sheet was prepared using a hot press at 190 ° C., and the adhesiveness of the obtained laminated body was evaluated. The adhesiveness was evaluated by three grades of A to C. Adhesiveness A: Small strength at interfacial peeling, Adhesiveness B: Medium adhesive strength due to partial cohesive peeling, Adhesive C: High strength due to cohesive failure. Table-Results
It is shown in FIG.

PC is "Novalex 7030" manufactured by Mitsubishi Engineering-Plastics Corporation, and PBT is "Novadol 50" manufactured by Mitsubishi Engineering-Plastics Corporation.
40, PET is Mitsubishi Novapex GS4
00 ", a resin having an epoxy group * 1 is" Epofriend ESBS AT000 "(epoxy equivalent: 480 to 540) manufactured by Daicel Chemical Industries, Ltd. A resin having an epoxy group * 2 is" Epofriend ESB ATB "manufactured by Daicel Chemical Industries, Ltd.
SAT014 "(epoxy equivalents 1800 to 210
0), resin * 3 having an epoxy group is "Epofriend ESBS AT015" (epoxy equivalent: 950-1050) manufactured by Daicel Chemical Industries, Ltd., and glass powder is "E325" (average particle size: 9 μm, manufactured by Nippon Glass Fiber Co., Ltd.) Barium sulfate is manufactured by Sakai Chemical Industry Co., Ltd. “BA” (average particle size 8μ)
m), calcium carbonate was manufactured by Nitto Powder Chemical Co., Ltd.
S "(average particle size 6 μm), titanium oxide is" SR-1 "(average particle size 0.25 μm) manufactured by Sakai Chemical Industry Co., Ltd.
"PEP-36" manufactured by Asahi Denka Kogyo KK was used.

[0023]

[Table 1]

[0024]

According to the present invention, it is possible to obtain a resin composition which is excellent in inorganic texture and design and excellent in adhesiveness.

Claims (7)

[Claims] 1. A resin composition comprising 0.1 to 150 parts by weight of a resin having an epoxy group or an epoxy residue, based on 100 parts by weight of a resin component comprising polycarbonate and / or polyester. 2. A resin composition comprising 0 to 95% by weight of a polycarbonate, 0 to 95% by weight of a polyester, and 5 to 60% by weight of a resin having an epoxy group or an epoxy residue. 3. The composition according to claim 1, wherein 0 to 150 parts by weight of an inorganic filler is mixed with 100 parts by weight of the resin composition.
3. The resin composition according to item 1. 4. The method according to claim 1, further comprising a coloring agent.
The resin composition according to claim 1. 5. The resin composition according to claim 3, wherein the inorganic filler is at least one selected from barium sulfate, calcium carbonate, silica, and glass. 6. The resin composition according to claim 4, wherein the coloring agent is at least one selected from titanium oxide, zinc oxide, zinc sulfide, mica, carbon fiber, and thermosetting resin granules. 7. A multilayer laminated sheet having a layer comprising the resin composition according to claim 1. Description: