Abstract: The present invention relates to phenyl or heteroaryl amino alkane derivatives of formula (I) in which the groups Q1-Q4, Ar, and R1-R7 are as defined in the specification and claims. These materials are useful as active ingredients of pharmaceutical preparations. The phenyl or heteroaryl amino alkanes of the present invention have IP receptor antagonistic activity, and can be used for the prophylaxis and treatment of diseases associated with IP receptor antagonistic activity. Such diseases include urological diseases or disorders as follows: bladder outlet obstruction, overactive bladder, urinary incontinence, detrusor hyper-reflexia, detrusor instability, reduced bladder capacity, frequency of micturition, urge incontinence, stress incontinence, bladder hyperreactivity, benighn prostatic hypertrophy (BPH), prostatitis, urinary frequency, nocturia, urinary urgency, pelvic hypersensitivity, urethritis, pelvic pain syndrome, prostatodynia, cystitis, or idiophatic bladder hypersensitivity.

Abstract: An ethylene terephthalate/ethylene-2,6-naphthalene dicarboxylate copolymer comprising 2,6-naphthalenedicarboxylic acid in an amount of 5 to 20 mol % of the total of all dicarboxylic acid components. This copolymer contains Mn, Mg and Co derived from catalysts and P derived from a phosphorus compound as a stabilizer whose amount is controlled to a specific value and is suitable for use as a raw material for molding a bottle having good color (achromatic) and transparency.

Abstract: A container formed from a copolyester composition which comprises a copolyester containing 80 to 95 mol % of terephthalic acid and 20 to 5 mol % of 2,6-naphthalenedicarboxylic acid as acid components and ethylene glycol as a glycol component, wherein catalyst metals of a calcium compound, magnesium compound and cobalt compound are contained in the copolyester in such amounts that satisfy all the following expressions (1) to (4) based on the total of the whole acid component of the polymer:0<Ca.ltoreq.35(mmol %) (1)0<Mg.ltoreq.80(mmol %) (2)40.ltoreq.(Mg+Ca).ltoreq.90(mmol %) (3)0.ltoreq.Co.ltoreq.15(mmol %) (4).The above polyester container is excellent in gas barrier property, ultraviolet light screening property, hot water resistance, hue and transparency, is not whitened and has a small content of aldehyde.

Abstract: A polyethylene-2,6-naphthalene dicarboxylate resin for molding a bottle, which comprises 2,6-naphthalenedicarboxylic acid as a main acid component and ethylene glycol as a main glycol component and contains a germanium compound as a polycondensation catalyst, and has an intrinsic viscosity of 0.55 to 0.75 dl/g, a terminal carboxyl group content of 32 eq/ton or less, an acetaldehyde content of 8 ppm or less and a diethylene glycol component content of 0.8 to 3.0 wt %.

Abstract: A loose tube for an optical fiber comprising a polybutylene terephthalate. The polybutylene terephthalate has a terminal carboxyl group concentration of 10 eq./10.sup.6 g.multidot.polymer or less and an intrinsic viscosity ?.eta.!, measured at 25.degree. C. in orthochlorophenol, of 0.9 to 1.4 dl/g.