摘要:
The invention relates to an aromatic amine resin comprising a mixture of aromatic amine compounds represented by the following general formula (a): ##STR1## wherein A represents a phenylene, alkyl-substituted phenylene, diphenylene, diphenyl ether or napthylenyl group, R.sup.1 represents a halogen atom or a hydroxyl C.sub.1-4 alkoxy or C.sub.1 -5 alkyl group, l is 1 or 2, m is 0, 1, 2 or 3, n is an integer from 0 to 300 and when m is 2 or 3, the R.sup.1 group may be same or different and may join to form a 5- to 6-membered alicyclic moiety which may optionally contain one or more side chains, and also relates to processes for producing the same and a thermosetting composition containing the same.
摘要:
Disclosed herein is an aromatic amine resin formed of a mixture of aromatic amine compounds represented by the following general formula (a): ##STR1## wherein A means a phenylene, alkyl-substituted phenylene, diphenylene, diphenyl ether or naphthylenyl group, R.sup.1 denotes a halogen atom or a hydroxyl, C.sub.1-4 alkoxy or C.sub.1-5 alkyl group, l stands for 1 or 2, m is an integer of 0-3, when m is 2 or 3, R.sup.1 s may be the same or different and two of R.sup.1 s may join together into a 5- to 6-membered alicyclic moiety which may optionally contain one or more side chains, and n stands for an integer of 0-300.
摘要:
A thermosetting resin composition formed of a polyaminobismaleimide resin, which is composed of a bismaleimide compound and a diamine compound, and a fibrous reinforcing material. The composition has excellent impact resistance and toughness while retaining conventional high heat resistance.
摘要:
Disclosed is a thermosetting resin composition which comprises a specific bismaleimide compound or polymaleimide and a specific aromatic diamine compound. It can be widely used for electrical and electronic parts, various structural parts, sliding parts and the like.
摘要:
This invention provides thermosetting-resin-forming compositions which are formed of (a) a bismaleimide compound represented by the following formula: ##STR1## wherein R represents a divalent group of ##STR2## X being a direct bond or a group selected from the group consisting of divalent hydrocarbon groups having 1-10 carbon atoms, hexa-fluorinated isopropylidene, carbonyl, thio, sulfinyl, sulfonyl and oxo, and (b) a specific diallylbisphenol compound. These compositions can provide thermosetting resins having high cracking resistance due to improved impact resistance and toughness and low water absorption.
摘要:
Thermosetting resin compositions are provided which comprise aromatic bismaleimide derivatives, for example, 2,2-bis[4(3-maleimidephenoxy)phenyl]propane and diamine derivatives, for example, 4,4'-bis(3-aminophenoxy)biphenyl. Prepolymers are also prepared by conducting heat-treatment of said compositions. The compositions of this invention are used for thermoforming such as compression molding etc. as well as raw materials of adhesives and coatings. The compositions provide molded articles which are excellent, for example, impact strength, flexibility and high-temperature stability.
摘要:
The present invention relates to thermosetting resin compositions comprising a bismaleimide compound represented by the formula (I) ##STR1## and an aromatic amine resin represented by the general formula (II) ##STR2## and to processes for preparing the same.
摘要:
In a scroll compressor configured to be capable of three-dimensional compression in a circumferential direction and a height direction of spiral wraps, in which top surfaces and bottom surfaces of spiral wraps (25B and 27B) are provided with step portions (25E and 27E) and the wrap height on the outer peripheral side of the step portion is made higher than the wrap height on the inner peripheral side, back-pressure introducing portions (55 and 57) where gaps between the back surfaces at step-portion ends of tip seals and groove bottom surfaces of tip seal grooves are made larger than a gap at the other portion are formed between the step-portion ends of tip seals (51 and 53) provided on top surfaces (25G and 27G) on the outer peripheral side of the spiral wraps and tip seal grooves (25L and 27L) to which the tip seals are fitted.
摘要:
An object of the present invention is to provide a scroll compressor capable of three-dimensional compression, which can prevent performance deterioration and performance variation due to gas leakage occurring on an outer peripheral side of a step portion of a spiral wrap and can achieve performance stabilization and performance improvement. In a scroll compressor configured to be capable of three-dimensional compression in a circumferential direction and a height direction of spiral wraps, in which top surfaces and bottom surfaces of spiral wraps (25B and 27B) are provided with step portions (25E and 27E) and the wrap height on the outer peripheral side of the step portion is made higher than the wrap height on the inner peripheral side, back-pressure introducing portions (55 and 57) where gaps between the back surfaces at step-portion ends of tip seals and groove bottom surfaces of tip seal grooves are made larger than a gap at the other portion are formed between the step-portion ends of tip seals (51 and 53) provided on top surfaces (25G and 27G) on the outer peripheral side of the spiral wraps and tip seal grooves (25L and 27L) to which the tip seals are fitted.
摘要:
A linear actuator includes a supporting unit with a stopper, a linear output unit, a movable unit, a magnetic flux generating unit and a control unit. The movable unit is connected to a stopper of the outer pipe at one end of the outer movable unit and to the linear output unit at the other end. The magnetic flux generating unit generates first magnetic fluxes. The movable unit has elasticity, and expands or contracts based on action of the first magnetic fluxes and the elasticity. The linear output unit linearly moves in response to the expansion or contraction of the movable unit.