Abstract: The present invention provides plant growth promoters each comprising, as an active ingredient, a jasmonic acid derivative represented by the following formula: ##STR1## wherein R.sup.1 represents a pentyl group or a pentenyl group and R.sup.2 represents a hydrogen atom or an alkyl group. These promoters exhibit excellent growth promotion effects particularly on root vegetables, potatoes (tuber crops), cereals, fruit vegetables, fruit trees, flowers and ornamental plants and industrial crops.

Abstract: The present invention provides a novel solvent which is capable of providing an excellent isobutylene polymer, little affects the environment, has a lower solubility in water than those of halogenated hydrocarbons having 1 or 2 carbon atoms and can be decomposed relatively easily. Namely, the present invention relates to: a process for producing an isobutylene polymer, which comprises performing a cationic polymerization reaction in a solvent containing primary and/or secondary monohalogenated hydrocarbon(s) having 3 to 8 carbon atoms, and an isobutylene polymer thus obtained; and a process for producing an isobutylene polymer having a vinyl group introduced into the terminal thereof, which comprises reacting the isobutylene polymer produced above with 1,9-decadiene or allyltrimethylsilane, and an isobutylene polymer thus obtained.

Abstract: Processes for the isolation of a telechelic isobutylene polymer in a non-aqueous system to prevent the generation of waste water having a solvent dissolved therein and processes for the preparation of a telechelic isobutylene polymer having more advantageous unsaturated groups. A process for the isolation of an isobutylene polymer includes a cationic polymerization reaction in a non-aqueous system in the presence of a catalyst MX.sub.n wherein M represents a metallic atom and X may be the same or different and represents a halogen atom or a monovalent hydrocarbon group. The process comprises conducting the cationic polymerization reaction, conducting a ligand exchange reaction of said catalyst, and then removing a component containing M.

Abstract: The invention discloses a process for preparing a 2,3-di-substituted cyclopentanone mixture containing an enriched cis-2,3-di-substituted cyclopentanone which comprises heating a trans-2,3-di-substituted cyclopentanone in the presence of 100 ppm or less (weight basis) of a metal carbonate based on the cyclopentanone. The invention also discloses a fragrant composition comprising 20 to 50 wt % of 2,3-di-substituted cis-methyl (dihydro)jasmonates and 80 to 50 wt % of 2,3-di-substituted (dihydro) trans-methyl (dihydro)jasmonates. The fragrant composition has jasmine flower-like fragrance.

Abstract: An isobutylene polymer having an unsaturated group and comprising more than one unit per molecule on the average of the formula: ##STR1## wherein R.sup.1, R.sup.2 and R.sup.3 are the same or different and each a hydrogen atom or a C.sub.1 -C.sub.8 alkyl group, R' and R" are the same or different and each a hydrogen atom, a methyl group or an ethyl group, and Q is a C.sub.1 -C.sub.30 divalent organic group, which provides a cured material having improved weather resistance.

Abstract: An isobutylene base polymer with a functional group having repeating units derived from isobutylene and at least one unit of the formula: ##STR1## wherein R.sup.1 is a hydrogen atom, a methyl group or an ethyl group and R.sup.2 is a divalent organic group, and a number average molecular weight of 500 to 500,000.

Abstract: Disclosed is a process for preparing an isobutylene-type allyl-terminated polymer, the process comprising mixing:(A) a cationically polymerizable isobutylene-containing monomer;(B) an organic compound serving as an initiator and concurrently as a chain transfer agent, the organic compound being represented by the formula (I) ##STR1## (C) at least one Lewis acid selected from the group consisting of (C.sub.2 H.sub.5).sub.2 AlCl, (C.sub.2 H.sub.5)AlCl.sub.2, SnCl.sub.4 and TiCl.sub.4 ; and(D) a compound serving as an end capping agent, the compound being represented by the formula (II) ##STR2## whereby the cationically polymerizable monomer is polymerized.

Abstract: The invention discloses a process for preparing a 2,3-di-substituted cyclopentanone mixture containing an enriched cis-2,3-di-substituted cyclopentanone which comprises heating a trans-2,3-di-substituted cyclopentanone in the presence of 100 ppm or less (weight basis) of a metal carbonate based on the cyclopentanone. The invention also discloses a fragrant composition comprising 20 to 50 wt % of 2,3-di-substituted cis-methyl (dihydro) jasmonates and 80 to 50 wt % of 2,3-di-substituted (dihydro) trans-methyl (dihydro) jasmonates. The fragrant composition has jasmine flower-like fragrance.

Abstract: A sealant for double-layered glass contains a saturated hydrocarbon based polymer having at least one silicon-containing group that has a hydroxyl group or a hydrolyzable group bonded to a silicon atom and which is capable of crosslinking by forming siloxane bond.

Abstract: Compounds of the formula (I): ##STR1## or a pharmaceutically acceptable salt thereof, wherein: R.sup.1 is cycloalkyl of 5 to 7 carbon atoms; aryl of 6 to 10 carbon atoms unsubstituted or substituted by straight or branched chain alkyl of 1 to 4 carbon atoms, halo or trifluoromethyl; or ##STR2## wherein A is oxygen, sulfur or NR.sup.5, wherein R.sup.5 is hydrogen, straight or branched chain alkyl of 1 to 4 carbon atoms or halo, and R.sup.6 is hydrogen, straight or branched chain alkyl of 1 to 4 carbon atoms or halo;R.sup.2 is straight or branched chain alkyl of 1 to 4 carbon atoms or cycloalkyl of 5 to 7 carbon atoms; andR.sup.3 and R.sup.4 are the same or different and each is hydrogen; straight or branched chain alkyl of 1 to 8 carbon atoms unsubstituted or substituted by hydroxy, acyloxy of 2 to 5 carbon atoms, carboxyl or carbamoyl;are useful for treating pain, inflammation and fever in humans and animals.

Abstract: There is disclosed a novel protected des-N-methylerythromycin derivative, in which 2', 3' and 9-positions are protected with new substituents that can provide stabler derivative and can be eliminated in a single reaction under neutral condition.

Abstract: An apparatus for filtering a suspension by at least one aggregate of membranes made of a high molecular weight compound porous hollow fibers to separate a filtrate from the suspended matter contained in the suspension, backwashing the aggregate of membranes with a backwashing gas to clean it and minimizing the amount of suspended matter entrained by the backwashing gas, and repeating the filtration and backwashing alternately, comprises a filtering vessel divided into a feed region and a filtrate region, the filtrate region being above the feed region, an inlet for the suspension at the feed region, an outlet for the filtrate at the filtrate region, an inlet for a backwashing gas in the filtrate region, an outlet for the backwashing gas in the feed region, a partition plate in the filtering vessel to support the aggregate of membrane filters and to divide the inteior of the filtering vessel into the filtrate region and the feed region, an outlet for a portion of the suspension in the feed region at a position

Abstract: A rubber closure device for closing the mouth of a vial or like vessel comprises an inner closure member having a leg portion adapted to tightly protrude into the mouth, and an overlay closure member overlaying the inner closure member. The inner closure member is made of fluorinated rubber and has a thickness sufficient to exhibit a resistance to chemicals.

Abstract: Solid antibiotic compositions containing 7.beta.-[2-(2-imino-4-thiazolin-4-yl)acetamido]-3-{1-[2-(N,N-dimethylamino )-ethyl]-1H-tetrazol-5-yl}thiomethyl-3-cephem-4-carboxylic acid dihydrochloride or its hydrate and a pharmaceutically acceptable carbonic acid salt are rapidly converted into an injectable solutions by the addition of a solvent, and the injectable solution shows high antibacterial activity with less local reactions when injected.

Abstract: An injectable solution containing a trihydric to hexahydric sugar alcohol together with L-pyroglutamyl-L-histidyl-L-prolinamide or a physiologically acceptable salt thereof shows significantly reduced pain when administered to a host, especially subcutaneously or intramuscularly.

Abstract: Solid antibiotic compositions containing 7.beta.-[2-(2-imino-4-thiazolin-4-yl)acetamido]-3-{1-[2-(N,N-dimethylamino )ethyl]-1H-tetrazol-5-yl}thiomethyl-3-cephem-4-carboxylic acid dihydrochloride or its hydrate and a pharmaceutically acceptable carbonic acid salt are rapidly converted into an injectable solutions by the addition of a solvent, and the injectable solution shows high antibacterial activity with less local reactions when injected.

Abstract: Arginine or lysine salt of acid cephalosporins can be administered parenterally, e.g., by intramuscular injection, with no substantial pain. Preferred acid cephalosporin salts are l-arginine or lysine salts of N-[7-(.alpha.-sulfophenylacetamido)ceph-3-em-3-ylmethyl]-pyridinium-4-carb oxylate, N-[7-(.alpha.-sulfophenylacetamido)-ceph-3-em-3-ylmethyl]-(4'-carbamoyl)py ridinium 4-carboxylate, 7-cyanoacetamido-cephalosporanic acid, 7-(2'-thienylacetamido)-3-[6"-(3"-methylpyridazinyl)thiomethyl]-ceph-3-em- 4-carboxylic acid 2"-oxide, 7-tetrazolylacetamido-3-[5'-(2'-methylthiadiazolyl)thiomethyl]-ceph-3-em-4 -carboxylic acid and 7-(2'-thienylacetamido)-cephalosporanic acid.