Mitsubishi Denki Kabushiki Kaisha

Kumiai Chemical Industry Co., Ltd.

Polyplastics Co., Ltd.

Takeda Chemical Indus., Ltd.

Koichi Sato

Susumu Kawaguchi

Isao Chiyomaru

Kazuo Jikihara

Ichiro Kimura

Shuichi Takayama

Shigekazu Itoh

Hideaki Maeyama

Tetsuya Mochizuki

Masatoshi Sakai

Toru Katsumata

Ichiro Sasaki

Takao Teraoka

Junji Ohshima

An enclosed motor compressor of a two cylinder type in which a clearance between the eccentric portion of the second rotary shaft and the second sub bearing is set greater than a clearance between the eccentric portion of the first rotary shaft and the first main bearing, and also there is formed a clearance between the eccentric portion of the second rotary shaft and the second main bearing, so that, even when the second rotary shaft moves in the axial direction thereof, there is eliminated the possibility that the eccentric portion of the second rotary shaft can be in touch with the second main bearing and second sub bearing in the axial direction, thereby being able to reduce noise. Also, the pair of main bearings further include, on the side of the compression elements, assembling jig mounting portions to which the assembling jig can be mounted. Due to this, when assembling the main bearings, the accuracy with which the main bearings are made parallel to each other can be improved, and thus the performance and reliability of the compressor can be improved, thereby being able to reduce noise.

Method for assembling an enclosed motor compressor of a two cylinder

Polyacetal resins can selectively be reduced in terms of surface gloss by the addition of a core-shell polymer. The core-shell polymer which serves as the surface gloss reducing agent is one which has a rubbery polymer as its core, and a glassy vinyl copolymer having an oxygenic group (e.g., a hydroxyl or glycidyl group) as its shell. Preferably, the core-shell polymer is emulsion polymerized in sequential stages to form the core and shell polymers by use of an oligomeric surfactant. The core-shell polymer is most preferably present in the polyacetal compositions in an effective amount of between 1 to 50 parts by weight, based on 100 parts by weight of the polyacetal base resin.

Polyacetal compositions having surface gloss reducing effective amounts

The rotary compressor is constructed such that two oil cooler pipes are arranged in the vicinity of two compressing elements located at the opposite ends of an electrically driving element. With this construction, cooling performances of the rotary compressor can be doubled. In addition, since the two oil cooler pipes and two heat exchangers are connected to each other in series, there does not arise a necessity for enlarging a volume of the rotary compressor by increasing a diameter of the same. Alternatively, the rotary compressor may include a cooler pipe for conducting refrigerant to an oil cooler pipe and a fan for simultaneously forcibly cooling an enclosed vessel and the cooler pipe. In this case, since the temperature of refrigerant gas to flow into the oil cooler pipe can be lowered, the lubricant can be cooled at a high efficiency. Thereby, it is provided an enclosed type rotary compressor which can exhibit sufficiently high performances, high properties and high reliability without any necessity for enlarging a volume of the rotary compressor.

Enclosed type rotary compressor

Enclosed motor compressor of a two cylinder type

A herbicidal composition which comprises a phenoxyphenoxy unsaturated derivative having the formula: ##STR1## wherein X represents a halogen atom or CF.sub.3 ; Y represents a hydrogen atom or a halogen atom; and Z represents --COOR, --COR', --COOH, --CH.sub.2 OH, or --CH.sub.2 OR''.

Phenoxyphenoxy unsaturated derivatives and herbicidal composition

A herbicidal composition which comprises a herbicidally effective amount of a phenoxyphenoxy derivative having the formula ##STR1## wherein X represents a halogen atom or CF.sub.3 ; Y represents a hydrogen atom or a halogen atom; and Z represents --COSR.sup.1 and R.sup.1 represents lower alkyl, phenyl, chlorophenyl, chlorobenzyl or methoxybenzyl; in combination with a suitable carrier is disclosed.

Trifluoromethylphenoxy phenoxy crotonic acid derivatives of the formula ##STR1## wherein X represents hydrogen or halogen atom, and R represents an alkyl, haloalkyl, alkenyl haloalkenyl or alkynyl group are disclosed. These compounds disclose herbicidal activity.

Phenoxyphenoxy crotonic acid derivatives and herbicidal composition

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Shizuoka, Japan

Koichi Sato