PROCESS FOR CONTINUOUS PRODUCTION OF ELASTIC POLYESTERS

    公开(公告)号:CA2033095C

    公开(公告)日:1997-01-14

    申请号:CA2033095

    申请日:1990-05-17

    Abstract: An elastic polyester is continuously prepared by continuously supplying an aromatic polyester and a lactone compound into an extruder which has (A) a cylinder having a shape of 3 represents the length of the cylinder and D represents the inner diameter of the cylinder) and (B) at least one screw and wherein (C) the occupancy ratio of the space in the inner volume of the cylinder in the screw-attached state is not larger than 70%, and reacting the aromatic polyester with the lactone compound while performing melting, delivery and kneading in the extruder, according to this process, the reaction time can be shortened, and an elastic polyester can be easily prepared at a high efficiency by simplified apparatus and operations. The obtained elastic polyester has an excellent durability represented by heat resistance and weatherability and has an excellent rubbery elasticity and mechanical properties. Accordingly, this elastic polyester can be widely used for the production of automobile parts, electric and electronic parts, machine parts and the like.

    12.
    发明专利
    未知

    公开(公告)号:DE69029078D1

    公开(公告)日:1996-12-12

    申请号:DE69029078

    申请日:1990-05-17

    Abstract: An elastic polyester is continuously produced by continuously feeding an aromatic polyester and a lactone to an extruder (6), which is provided with a cylinder having an aspect ratio (L/D) ranging from 3 to 50 (wherein L represents the cylinder length of a reactor and D the inner diameter of the cylinder) and at least one screw and wherein the space in the cylinder provided with the screw accounts for 70 % or less of the internal volume of the cylinder, and reacting the lactone with the aromatic polyester while conducting the melting, carrying and kneading of the feed material in the extruder (6). Since the screw can be turned with a high speed, the effect of kneading can be enhanced and the reaction time can be shortened. Since the obtained elastic polyester is excellent in durability represented by thermal and weathering resistances, rubber elasticity, and mechanical properties, it has a wide range of uses such as automotive parts, electric and electronics components and machine parts.

    A PROCESS FOR PRODUCING POLYETHERESTERAMIDE

    公开(公告)号:DE3565842D1

    公开(公告)日:1988-12-01

    申请号:DE3565842

    申请日:1985-04-23

    Abstract: The high polymerization degree polyetheresteramides without any gelated materials and with superior color tones are obtained in a short time through the polycondensing interaction carried out between (A) one or more than two polyamide forming components selected from lactams and aminocarboxylic acids as well as the salts of substantially-equal quantities of diamines and dicarboxylic acid and (B) the polyetherester forming components consisting of the substantially-equal quantities of dicarboxylic acids and poly(alkylene oxide) glycols in the presence of 0.001 to 0.5 percent by weight of the mixtures composed of antimony oxides/organic tin compounds at the ratios of 80/20 to 30/70 by weight and more preferably in the co-presence of 0.0005 to 0.5 percent by weight of phosphoric compounds.

    15.
    发明专利
    未知

    公开(公告)号:DE69023571T2

    公开(公告)日:1996-06-05

    申请号:DE69023571

    申请日:1990-08-07

    Abstract: A polyoxymethylene multi-copolymer having spherulites and obtainable by copolymerizing (a) trioxane, (b) at least one cyclic ether or formal compound chosen from ethylene oxide, 1,3-dioxolane, 1,3-dioxepane, 1,3,5-trioxepane and 1,3,6-trioxocane, and (c) at least one compound chosen from glycidyl phenyl ether, styrene oxide and glycidyl naphthyl ether, is characterised in that the number average molecular weight of said polyoxymethylene multi-copolymer is from 10,000 to 100,000, that the melting point (Tm) and crystallization temperature (Tc) thereof are governed by the relationship, Tm - Tc

    16.
    发明专利
    未知

    公开(公告)号:DE68911122D1

    公开(公告)日:1994-01-13

    申请号:DE68911122

    申请日:1989-06-22

    Abstract: The title resin composition is composed of (A) 100 parts by weight of polyacetal resin and (B) 1 to 100 parts by weight of polyetherester block copolymer of (a) a dicarboxylic acid component mainly comprising terephthalic acid, (b) a glycol component mainly comprising 1,4-butanediol and (c) a poly(ethylene oxide)glycol derivative of a number-average molecular weight of 500 to 20,000 containing 20 to 95 wt % of poly(ethylene oxide) carboxylate units. It has excellent antistatic and mechanical properties, particularly impact resistance.

    17.
    发明专利
    未知

    公开(公告)号:DE60115342T2

    公开(公告)日:2006-07-06

    申请号:DE60115342

    申请日:2001-07-24

    Abstract: A rubber-reinforced styrene transparent resin composition contains a styrene copolymer reinforced with a rubber polymer, wherein the monomer composition of an acetone soluble resin component contained in the resin composition contains 5 to 70% by weight of aromatic vinyl monomer (a1), 30 to 95% by weight of unsaturated carboxylic acid alkyl ester monomer (a2), 0 to 50% by weight of vinyl cyanide monomer (a3), and 0 to 50% by weight of another monomer copolymerizable with these monomers, and the acid value of the acetone soluble resin component is 0.01 to 1 mgKOH/g.

    18.
    发明专利
    未知

    公开(公告)号:DE69807135T2

    公开(公告)日:2003-03-27

    申请号:DE69807135

    申请日:1998-01-29

    Abstract: Cyclic formal is manufactured by cyclic reaction of an alkylene glycol and an aldehyde in a reactor, producing formal mixed with unreacted aldehyde as an impurity, which is reduced in amount by connecting the reactor to a distillation tower and continuously supplying a raw alkylene glycol to the distillation tower from which unreacted formaldehyde and a cyclic formal are being distilled, and continuously reacting them with supplied raw formaldehyde by countercurrent flow during distillation. Water content in azeotropic admixture with cyclic formal can be removed by azeotropic distillation with a hydrocarbon azeotropic admixture with water, distilling water from the cyclic formal.

    A method for continuously producing a cyclic formal

    公开(公告)号:SG65045A1

    公开(公告)日:1999-05-25

    申请号:SG1998000152

    申请日:1998-01-21

    Abstract: Cyclic formal is manufactured by cyclic reaction of an alkylene glycol and an aldehyde in a reactor, producing formal mixed with unreacted aldehyde as an impurity, which is reduced in amount by connecting the reactor to a distillation tower and continuously supplying a raw alkylene glycol to the distillation tower from which unreacted formaldehyde and a cyclic formal are being distilled, and continuously reacting them with supplied raw formaldehyde by countercurrent flow during distillation. Water content in azeotropic admixture with cyclic formal can be removed by azeotropic distillation with a hydrocarbon azeotropic admixture with water, distilling water from the cyclic formal.

    20.
    发明专利
    未知

    公开(公告)号:ID19754A

    公开(公告)日:1998-07-30

    申请号:ID980124

    申请日:1998-01-28

    Abstract: Cyclic formal is manufactured by cyclic reaction of an alkylene glycol and an aldehyde in a reactor, producing formal mixed with unreacted aldehyde as an impurity, which is reduced in amount by connecting the reactor to a distillation tower and continuously supplying a raw alkylene glycol to the distillation tower from which unreacted formaldehyde and a cyclic formal are being distilled, and continuously reacting them with supplied raw formaldehyde by countercurrent flow during distillation. Water content in azeotropic admixture with cyclic formal can be removed by azeotropic distillation with a hydrocarbon azeotropic admixture with water, distilling water from the cyclic formal.

Patent Agency Ranking