摘要:
A process for producing resin particles, characterized by adding a liquid material having a boiling point of 100°C or higher to an aqueous dispersion of resin particles, filtering the resultant mixture to recover a wet cake, and then drying the wet cake to obtain resin particles. The liquid material preferably is a water-soluble material. The liquid material may comprise at least one compound selected among the compounds shown in The Japanese Standard of Cosmetic Ingredients, Compounding Ingredients of Cosmetics by Category, The Japanese Pharmacopoeia, or The Japan's Specifications and Standards for Food Additives. According to the process, resin particles can be provided which are prevented from aggregating upon drying and which, when added to other materials, can have excellent dispersibility.
摘要:
Fine spherical thermoplastic resin particles are produced by preparing a resin composition including a matrix of a water-soluble material, and fine particles of a water-insoluble thermoplastic resin dispersed in the matrix, the fine particles and the matrix each being melted or softened in the resin composition; cooling and solidifying the resin composition under such conditions that the resin composition does not undergo deformation due to stress; and removing the water-soluble material by washing with water to thereby yield fine spherical particles containing the water-insoluble thermoplastic resin. This method has wide applicability, applies less loads on the environment, does not require special devices, can be easily conducted, and can efficiently produce such particles. The resulting particles are highly spherical.
摘要:
Fine spherical thermoplastic resin particles are produced by preparing a resin composition including a matrix of a water-soluble material, and fine particles of a water-insoluble thermoplastic resin dispersed in the matrix, the fine particles and the matrix each being melted or softened in the resin composition; cooling and solidifying the resin composition under such conditions that the resin composition does not undergo deformation due to stress; and removing the water-soluble material by washing with water to thereby yield fine spherical particles containing the water-insoluble thermoplastic resin. This method has wide applicability, applies less loads on the environment, does not require special devices, can be easily conducted, and can efficiently produce such particles. The resulting particles are highly spherical.
摘要:
A thermoplastic resin composition material 1 includes a resin portion (a) 2 made of a thermoplastic resin (A) ; elastomer portions (b) 3 made of a thermoplastic elastomer (B) having substantially no compatibility with the thermoplastic resin (A) and having a glass transition temperature of lower than or equal to -40°C; and polymer portions (c) 4 made of a high polymer (C) having substantially no compatibility with the thermoplastic resin (A) and the thermoplastic elastomer (B), having a glass transition temperature or crystallization temperature of lower than or equal to -50°C, and having a viscosity at 40°C of 0.1 to 200000 cP. The material has a structure in which the elastomer portions (b) 3 are dispersed in the resin portion (a) 2, and the polymer portions (c) 4 are dispersed in the elastomer portions (b) 3. Accordingly, low-temperature impact resistance can significantly be improved without deterioration in the other inherent excellent physical properties of the thermoplastic resin.
摘要:
Resin particles are produced by adding a liquid material having a boiling point of 100°C or higher to an aqueous dispersion of resin particles to yield a mixture, recovering a wet cake from the mixture by filtration, and drying the wet cake. A water-soluble material is preferably used as the liquid material. The liquid material may also be at least one compound selected from compounds listed in The Japanese Standards of Cosmetic Ingredients, The Japanese Cosmetic Ingredients Codex, The Pharmacopoeia of Japan, and The Japan's Specifications and Standards for Food Additives. According to this method, there are provided resin particles which are resistant to coagulation upon drying and are satisfactorily dispersible in other materials.
摘要:
A functioning optical lens includes a molded polyamide layer, and an optical sheet including a polyamide sheet layer and an optical film layer. Such a functioning optical lens may be prepared by bending an optical sheet including an optical film layer and a polyamide sheet layer, and injection molding a polyamide composition onto the bent polyamide sheet layer so as to thermally fuse the polyamide composition and the polyamide sheet layer with each other.
摘要:
A thermoplastic resin composition material (1) which has a resin part (a)(2) comprising a thermoplastic resin (A), an elastomer part (b) (3) comprising a thermoplastic elastomer (B) having substantially no compatibility with the thermoplastic resin (A) and having a glass transition temperature of -40°C or lower, and a polymer part (c)(4) comprising a high molecular weight polymer (C) having substantially no compatibility with the thermoplastic resin (A) or the thermoplastic elastomer (B) and having either of a glass transition temperature and crystalization temperature of 50 ° C and a viscosity at 40 °C of 0.1 to 200,000 cP, wherein the elastomer part (b) (3) is dispersed in the resin part (a)(2) and the polymer part (c)(4) is dispersed in the elastomer part (b) (3). The thermoplastic resin composition material exhibits significantly improved impact resistance at a low temperature, without detriment to other excellent physical properties inherent in the thermoplastic resin.
摘要:
A resin composition comprises a resin, a vulcanization-activating agent, and a stabilizer. The vulcanization-activating agent may be a compound having a plurality of polymerizable unsaturated bonds (e.g., a compound having a plurality of (meth)acryloyl groups). The stabilizer may be an antioxidant, or a light stabilizer (particularly, a stabilizer is capable of capturing a radical). Use of the resin composition as a resin material ensures to directly join between a resin and a rubber certainly and firmly. The proportion of the vulcanization-activating agent may be about 0.1 to 10 parts by weight relative to 100 parts by weight of the resin. The proportion of the stabilizer may be about 0.01 to 5 parts by weight relative to 100 parts by weight of the resin. The present invention provides a resin composition excellent in adhesiveness to a rubber.
摘要:
A resin composition which comprises a thermoplastic elastomer and a glycol or derivative thereof. The thermoplastic elastomer can, for example, be a polyamide type or polyester type thermoplastic elastomer. The thermoplastic elastomer may have a flexible phase constituted of a polyether or polyester. The glycol or derivative thereof can, for example, be a compound represented by the formula (1) (wherein R?1 and R2¿ are the same or different and each represents hydrogen, alkyl, or acyl; A?1, A2, and A3¿ are the same or different and each represents alkylene having 2 or more carbon atoms; and l, m, and n are the same or different and each is an integer of 0 or larger, provided that l+m+n⊃0). The resin composition can have greatly improved low-temperature impact resistance while retaining tensile properties, flexural properties, and heat resistance.
摘要:
A composite of a resin member bonded to a vulcanized rubber member is obtained with using a rubber member vulcanized with a radical-generating agent (e.g., an organic peroxide) and a thermoplastic resin having at least 2 atoms, on average, selected from H and S atom per molecule, each atom having not less than 0.006 of an orbital interaction energy coefficient S represented by the following formula (1): S=(C HOMO,n ) 2 / E C -E HOMO,n +(C LUMO,n ) 2 / E C -E LUMO,n wherein E C :an orbital energy (eV) of a radical, C HOMO,n :a molecular-orbital coefficient of a highest occupied molecular orbital (HOMO) of an n-th H or S atom constituting a basic unit of the resin, E HOMO,n :an orbital energy (eV) of the HOMO, C LUMO,n :a molecular-orbital coefficient of a lowest unoccupied molecular orbital (LUMO) of the n-th H or S atom constituting the basic unit of the resin, E LUMO,n : an orbital energy (eV) of the LUMO, and above all represent a value calculated by a semiempirical molecular orbital method MOPACPM3. The thermoplastic resin includes a polyamide, a polyester, a PPE, a POM, a PPS, a polyolefinic resins, and the unvulcanized rubber may comprise a vulcanization-activating having plural polymerizable unsaturated bonds. The invention gives the composite of the resin bonded directly to the rubber firmly without adhesives in wide combinations of the resin and the rubber.