Abstract:
A polyamide resin composition contains a resin component containing at least a polyamide (X) and a fatty acid metallic salt having from 10 to 50 carbon atoms, and contains arbitrarily an additive (A) and/or an additive (B). The polyamide (X) is obtained through melt polycondensation of a diamine component containing 70% by mol or more of m-xylylenediamine and a dicarboxylic acid component containing 70% by mol or more of an ±,É-linear aliphatic dicarboxylic acid. The additive (A) is at least one compound selected from the group consisting of a diamide compound obtained from a fatty acid having from 8 to 30 carbon atoms and a diamine having from 2 to 10 carbon atoms, a diester compound obtained from a fatty acid having from 8 to 30 carbon atoms and a diol having from 2 to 10 carbon atoms, and a surfactant, and the additive (B) is at least one compound selected from the group consisting of a metallic hydroxide, a metallic acetate salt, a metallic alkoxide, a metallic carbonate salt and a fatty acid.
Abstract:
The presently disclosed subject matter is directed to a polymeric films suitable for use in a wide variety of applications, including (but not limited to) the formation of bioprocessing containers. Particularly, the disclosed films comprise a first barrier layer comprising polyglycolic acid, polyamide, EVOH, and/or an EVOH blend and a second barrier layer comprising EVOH. The dual barrier layers of the film maintain a high gas barrier under a variety of relative humidity conditions. In addition, the disclosed film is biologically inert and free from film surface-modifying additives such that the film does not inhibit the growth of biological cell cultures.
Abstract:
The present invention provides a resin composition which is excellent in gas-barrier properties after a hot-water treatment and excellent in handling properties without increasing viscosity of the resin composition in a melt-kneading step at forming. The invention provides a resin composition containing a thermoplastic resin (A) and a partially dehydrated product or completely dehydrated product (B) of hydrated carboxylic acid salt.
Abstract:
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.
Abstract translation:使用与自由基发生剂(例如有机过氧化物)硫化的橡胶构件和具有至少2个原子的热塑性树脂,平均从H和H中获得与硫化橡胶构件接合的树脂构件的复合材料, S原子,每个原子具有不低于0.006的由下式(1)表示的轨道相互作用能量系数S:S = C HOMO,n 2 / E c -E HOMO,n + C LUMO,n 2 / E c -E LUMO,n其中E c:基团的轨道能(eV)C HOMO,n:构成第n个H或S原子的最高占分子轨道(HOMO)的分子轨道系数 树脂的基本单位E HOMO,n:HOMO的轨道能量(eV),C LUMO,n:第n个H或S原子的最低未占分子轨道(LUMO)的分子轨道系数 构成树脂的基本单位E LUMO,n:LUMO的轨道能(eV),并且首先代表由半经验分子 轨道法MOPACPM3。 热塑性树脂包括聚酰胺,聚酯,PPE,POM,PPS,聚烯烃树脂,未硫化橡胶可以包含具有多个可聚合不饱和键的硫化活化。 本发明给出了树脂和橡胶的组合较多的粘合剂,直接粘合到橡胶上的树脂的复合材料。
Abstract:
A laminate for stretch-forming includes: a polyglycolic acid-based resin layer containing 100 parts by mass of a polyglycolic acid-based resin and 0.5 parts by mass or more and 10 parts by mass or less of at least one thermoplastic elastomer selected from the group consisting of polyester-based thermoplastic elastomers and polyurethane-based thermoplastic elastomers; and a thermoplastic resin layer adjacent to the polyglycolic acid-based resin layer, as well as a stretched laminate is obtained by stretching the same.