摘要:
The invention provides a stretch blow molded container formed from a thermoplastic resin material which comprises polyglycolic acid having(a) a repeating unit represented by the following formula (1): ##STR1## (b) a melt viscosity, .eta.* [as measured at a temperature of (the melting point, Tm of the polymer+20.degree. C.) and a shear rate of 100/sec] of 500-100,000 Pa.s;(c) a melting point, Tm of at least 180.degree. C.;(d) a melt enthalpy, .DELTA.Hm of at least 20 J/g; and(e) a density of at least 1.50 g/cm.sup.3 as measured in an unoriented, crystallized form,wherein the stretch blow molded container has tensile strength (in a circumferential direction) of at least 100 MPa and a carbon dioxide permeability (as measured at a temperature of 23.degree. C. and 80% relative humidity; in terms of the thickness of 50 .mu.m) of 300 cc/m.sup.2.day.atm or smaller at the body sidewall thereof, and a production process thereof.
摘要:
The invention provides a stretch blow molded container formed from a thermoplastic resin material which comprises polyglycolic acid having(a) a repeating unit represented by the following formula (1): ##STR1## (b) a melt viscosity, .eta.* [as measured at a temperature of (the melting point, Tm of the polymer+20.degree. C.) and a shear rate of 100/sec] of 500-100,000 Pa.multidot.s;(c) a melting point, Tm of at least 180.degree. C.;(d) a melt enthalpy, .DELTA.Hm of at least 20 J/g; and(e) a density of at least 1.50 g/cm.sup.3 as measured in an unoriented, crystallized form,wherein the stretch blow molded container has tensile strength (in a circumferential direction) of at least 100 MPa and a carbon dioxide permeability (as measured at a temperature of 23.degree. C. and 80% relative humidity; in terms of the thickness of 50 .mu.m) of 300 cc/m.sup.2 .multidot.day.multidot.atm or smaller at the body sidewall thereof, and a production process thereof.
摘要翻译:本发明提供一种由热塑性树脂材料形成的拉伸吹塑成型容器,该容器包含聚乙醇酸,该聚乙醇酸具有(a)由下式(1)表示的重复单元:(b)熔体粘度eta * [在 (熔点,聚合物的Tm + 20℃)和100 /秒的剪切速率]为500-10000Pax; (c)熔点Tm为至少180℃。 (d)熔体焓,至少20J / g的DELTA Hm; 和(e)以非取向的结晶形式测量的至少1.50g / cm 3的密度,其中拉伸吹塑成型容器的拉伸强度(在圆周方向)为至少100MPa,二氧化碳渗透性(测量 在23℃和80%相对湿度的温度下,在其体侧壁为300cc / m 2×day×atm以下的厚度为50μm),及其制造方法。
摘要:
A process for obtaining aromatic sulfide polymer which has a markedly high molecular weight and can be readily formed into films, fibers, and other structures. The process comprises heating, in an aprotic solvent to a temperature of 100.degree. to 250.degree. C., (i) a dihaloaromatic compound and (ii) substantially anhydrous fine powder of the sulfide of an alkali or alkaline earth metal in the presence of (iii) substantially anhydrous fine powder of the carbonate of an alkali or alkaline earth metal, or of a mixture thereof with a hygroscopic inorganic salt and (iv) a strictly controlled very small amount of water dissolved in or solvated with the solvent.
摘要:
A controlled release pharmaceutical composition comprises (a) at least one pharmaceutically active substance having a water contact angle (θ) such that cos θ is between +0.9848 and −0.9848, (b) a first intelligent polymer component; and (c) a second intelligent polymer component having opposite wettability characteristics to the first intelligent polymer component, the first and second polymer components being present in a ratio in the range of about 1:100 to about 100:1 by weight. The polymer components are effective for controlled release of the pharmaceutically active substance from the composition.
摘要:
The invention provides an injection-molded product of polyglycolic acid obtainable by molding a thermoplastic resin material at an injection temperature ranging from the melting point, Tm of the polymer to 255° C., wherein the thermoplastic resin material comprises polyglycolic acid having a repeating unit represented by the following formula (1): and the following physical properties: (a) the melt viscosity, &eegr;* [as measured at a temperature of (the melting point, Tm of the polymer+20° C.) and a shear rate of 1,000/sec] being 30-10,000 Pa·s; (b) the melting point, Tm being at least 150° C.; (c) the melt enthalpy, &Dgr;Hm being at least 20 J/g; and (d) the density being at least 1.50 g/cm3 as measured in an unoriented, crystallized form, and a production process thereof.
摘要:
The invention provides an oriented polyglycolic acid film formed from a thermoplastic resin material which comprises polyglycolic acid having a repeating unit represented by the following formula (1): ##STR1## and the following physical properties: (a) the melt viscosity, .rho.* �as measured at a temperature of (the melting point, Tm of the polymer+20.degree. C.) and a shear rate of 100/sec! being 500-100,000 Pa.s; (b) the melting point, Tm being at least 150.degree. C.; (c) the melt enthalpy, .DELTA.Hm being at least 20 J/g; and (d) the density being at least 1.50 g/cm.sup.3 as measured in an unoriented, crystallized form, wherein the film has tensile strength of at least 150 MPa, and production processes thereof.
摘要:
Disclosed herein are an aromatic thioether ketone/thioether sulfone random copolymer comprising phenylene thioether ketone recurring units (I) and phenylene thioether sulfone recurring units (II), (a) the compositional ratio (I:II) of the recurring units (I) to the recurring units (II) ranging from 98:2 to 65:35, (b) the solution viscosity (.eta..sub.inh) being at least 0.3 dl/g, (c) the melt crystallization time (f) being at least 3 minutes, (d) the melting point (Tm) being 300.degree.-350.degree. C., (e) the glass transition temperature being at least 125.degree. C., (f) the retention (400.degree. C./20 min) of melt crystallization enthalpy (.DELTA.Hmc) being at least 60%, and (g) the average particle size being at least 0.1 mm, and the production process thereof.
摘要:
A granular, high-melt-stable poly(arylene thioetherketone) has a solution viscosity (.eta..sub.inh) of at least 0.30 dl/g, a retention (400.degree. C./20 min) of melt crystallization enthalpy (.DELTA.Hmc) of at least 60%, a melting point of 340.degree.-360.degree. C., a glass transition temperature of at least 125.degree. C. and an average particle diameter of 0.1-2 mm. A production process of a granular, high-melt-stable poly(arylene thioether-ketone) comprises reacting an alkali metal sulfide and a dihalogenated aromatic compound consisting principally of a 4,4'-dihalobenzophenone in an organic amide solvent containing water. In the first step, (1) the ratio of the amount of the charged dihalogenated aromatic compound to the amount of the charged alkali metal sulfide is controlled to 0.95-1.2 (mole/mole), (2) the ratio of the water content to the amount of the charged organic amide solvent is controlled to 1-15 (mole/kg), and (3) the reaction is conducted for 3-30 hours at 180.degree.-260.degree. C. to form a prepolymer having a solution viscosity of at least 0.15 dl/g. In the second step, (1) the ratio of the water content to the amount of the charged organic amide solvent in the reaction mixture is controlled to 7-15 (mole/kg), and (2) the reaction mixture containing the prepolymer is reacted further for 0.05-10 hours in a temperature range of from more than 300.degree. C. to less than 350.degree. C. to form a polymer having a solution viscosity higher than that of the prepolymer by at least 0.03 dl/g. The reaction mixture is then cooled with stirring.
摘要:
A coated metal body having a metal base or a metal base having an undercoat of an inorganic and/or organic material and at least one coating layer formed on the metal base or the undercoat to a thickness of 5-1,000 .mu.m with a poly(arylene thioether-ketone) resin coating material. The resin coating material is formed of 100 parts by weight of a poly(arylene thioether-ketone), 0-400 parts by weight of a thermoplastic resin and/or thermosetting resin compatible with the poly(arylene thioether-ketone) and 0-150 parts by weight, per 100 pars by weight of the sum of the resin components, of at least one filler selected from fibrous fillers, inorganic fillers and metallic fillers. The poly(arylene thioether-ketone) contains predominant recurring units of the formula ##STR1## wherein the --CO-- and --S-- are in the para position to each other, and has a melting point, Tm of 310.degree.-380.degree. C., a melt crystallization temperature, Tmc (420.degree. C./10 min) of at least 210.degree. C., a residual melt crystallization enthalpy, .DELTA.Hmc (420.degree. C./10 min) of at least 10 J/g, and a reduced viscosity of 0.2-2 dl/g as determined by viscosity measurement at 25.degree. C. and a polymer concentration of 0.5 g/dl in 98 percent by weight sulfuric acid.
摘要:
The invention relates a gas barrier multi-layer hollow container having a multi-layer wall structure that a thermoplastic resin layer is laminated on at least one side of a layer formed from polyglycolic acid containing at least 60 wt. % of a repeating unit represented by the following formula (1): wherein the container has excellent oxygen gas barrier property and/or carbon dioxide gas barrier property, and a production process thereof.