公开(公告)号：US4818808A

公开(公告)日：1989-04-04

申请号：US173188

申请日：1988-03-24

申请人： Toshihiro Kushimoto ,  Yoshimichi Ozawa ,  Nobuo Izawa

发明人： Toshihiro Kushimoto ,  Yoshimichi Ozawa ,  Nobuo Izawa

IPC分类号： C08G63/85 ,  C08G63/04

CPC分类号： C08G63/85

摘要： A process for producing a linear polyester comprising a main structural unit of an aromatic dicarboxylic acid ester of an alkylene glycol, particularly, comprising a polyethylene terephthalate or polytetramethylene terephthalate unit, is provided. In the process of the invention, the polycondensation reaction is conducted in the presence of a niobic acid catalyst that is obtained by heat-treating a hydrated niobium compound at the temperature range between 80.degree. C. and 400.degree. C. The process of the invention is also effecitvely applied to the manufacture of an elastomeric polyester comprising a polyalkylene terephthalate as a hard segment and a polyalkylene glycol as a soft segment.

公开(公告)号：US4804730A

公开(公告)日：1989-02-14

申请号：US11464

申请日：1987-02-05

申请人： Naoya Ogata

发明人： Naoya Ogata

IPC分类号： C08G63/16 ,  C08G63/78 ,  C08G63/87 ,  C08G79/02 ,  C08G85/00 ,  C08G63/04 ,  C08G63/34 ,  C08G63/38

CPC分类号： C08G79/025 ,  C08G63/87 ,  C08G85/00 ,  C08G85/004

摘要： Condensation polymers of high molecular weight, such as polyesters, polyureas, and polyamides, are usually prepared at temperatures of 200.degree. C. or greater. However, by utilizing the catalyst systems of the present invention, condensation polymers can be synthesized at much lower temperatures. The polycondensation catalyst systems of the present invention are particularly useful for synthesizing aliphatic polyesters, such as polyethylene terephthalate, from dicarboxylic acids and aliphatic glycols. The present invention more specifically discloses a process for the synthesis of an aliphatic polyester comprising polymerizing at least one dicarboxylic acid with at least one aliphatic glycol in the presence of (1) at least one phosphorus containing compound which contains at least one trivalent or pentavalent phosphorus atom which is bonded directly to at least one phenyl group, (2) an acid acceptor, and (3) at least one halogenated oganic compound. It is preferred to utilize a polymeric agent having bound acid acceptor groups as the acid acceptor in the process of the present invention.

公开(公告)号：US4780527A

公开(公告)日：1988-10-25

申请号：US47421

申请日：1987-05-06

申请人： Shen-Nan Tong ,  Mei-Sui Chen ,  Wu-Bin Yuo ,  Nien-Hsi Chang

发明人： Shen-Nan Tong ,  Mei-Sui Chen ,  Wu-Bin Yuo ,  Nien-Hsi Chang

IPC分类号： C08G63/183 ,  C08G63/78 ,  C08G63/82 ,  C08G63/85 ,  C08G63/04

CPC分类号： C08G63/82 ,  C08G63/78

摘要： Poly(butylene terephthalate) is prepared in a two-stage process wherein terephthalic acid and 1,4-butanediol are esterified in the presence of a catalytic amount of a catalyst having an organo-metallic component which is an organo-titanate compound, an organo-tin compound or a combination thereof and a salt component which is an organic acid salt or an inorganic salt. In a second step, the esterification product is subject to polycondensation. By following the foregoing procedure, the formation of tetrahydrofuran is significantly suppressed and the percent conversion of esterification products increased.

公开(公告)号：US4705844A

公开(公告)日：1987-11-10

申请号：US904685

申请日：1986-09-05

申请人： Bernd Espenschied ,  Peter Klein

发明人： Bernd Espenschied ,  Peter Klein

IPC分类号： C08G63/00 ,  C08G63/16 ,  C08G63/88 ,  C08K3/16 ,  C08K5/00 ,  C08K5/04 ,  C08L67/00 ,  C08L67/02 ,  C08G63/04

CPC分类号： C08K3/16 ,  C08G63/88 ,  C08K5/04

摘要： The invention relates to rapidly crystallizing polyester materials and a process for their preparation, in which, in a first stage, the polyester is prepared in the presence of an (alkaline earth) alkali metal or of an (alkaline earth) alkali metal compound, and then, in a second stage, further non-nucleated polyesters and a crystallization accelerator in a adequate amount are, if required, added to this polyester.The polyesters according to the invention are distinguished in particular by reduced molecular weight degradation.

摘要翻译： 本发明涉及快速结晶的聚酯材料及其制备方法，其中在第一阶段中，聚酯是在（碱土金属）碱金属或（碱土金属）碱金属化合物存在下制备的，以及 那么在第二阶段中，如果需要的话，可以向该聚酯中加入足够量的其它非成核聚酯和结晶促进剂。 根据本发明的聚酯特别是通过降低分子量降解来区分。

公开(公告)号：US4452969A

公开(公告)日：1984-06-05

申请号：US502434

申请日：1983-06-09

申请人： Russell J. McCready

发明人： Russell J. McCready

IPC分类号： C08G63/85 ,  C08G63/04 ,  C08G63/34

CPC分类号： C08G63/85

摘要： Poly(alkylene dicarboxylates) such as poly(alkylene terephthalates) are prepared by reacting a dicarboxylic acid or alkyl ester thereof with an alkanediol in the presence of a titanium-containing chelate compound which may be prepared by the reaction of a tetraalkyl titanate with a substituted carboxylic acid derivative such as methyl salicylate, malic acid, glycine or dibutyl tartrate. Polymerization by this method minimizes ester-carbonate interchange in blends of the poly(alkylene dicarboxylates) with aromatic polycarbonates. A number of the chelates are novel compounds.

摘要翻译： 聚（亚烷基二羧酸酯）如聚（对苯二甲酸亚烷基酯）通过使二羧酸或其烷基酯与链烷二醇在含钛螯合物的存在下反应来制备，所述含钛螯合物可以通过使钛酸四烷基酯与取代的 羧酸衍生物如水杨酸甲酯，苹果酸，甘氨酸或酒石酸二丁酯。 通过该方法进行聚合可使聚（亚烷基二羧酸酯）与芳族聚碳酸酯的共混物中的碳酸酯 - 碳酸酯交换最小化。 许多螯合物是新化合物。

公开(公告)号：US4346214A

公开(公告)日：1982-08-24

申请号：US297715

申请日：1981-08-31

申请人： David H. Blount

发明人： David H. Blount

IPC分类号： C08G69/42 ,  C08G69/44 ,  C08G63/04 ,  C08G63/30

CPC分类号： C08G69/44 ,  C08G69/42

摘要： Polyester amide silicate resinous products are produced by heating a mixture of an oxidated silicon compound, polyhydroxy compound, a polycarboxylic acid and/or polycarboxylic acid anhydride and a polyamine in the presence of an alkali catalyst.

摘要翻译： 通过在碱催化剂的存在下加热氧化硅化合物，多羟基化合物，多元羧酸和/或多元羧酸酐和多胺的混合物来制备聚酯酰胺硅酸盐树脂产物。

公开(公告)号：US3948856A

公开(公告)日：1976-04-06

申请号：US527613

申请日：1974-11-27

申请人： Robert W. Stackman

发明人： Robert W. Stackman

IPC分类号： C08G63/06 ,  C08G63/19 ,  C08G63/682 ,  C08G63/82 ,  C08G63/04 ,  C08G63/10 ,  C08G63/30

CPC分类号： C08G63/065 ,  C08G63/19 ,  C08G63/6826 ,  C08G63/82

摘要： An improved acid interchange polymerization process for the formation of an aromatic polyester is provided. Ester and carboxylic acid functional groups are reacted in the presence of a catalytically effective amount of a catalyst consisting of a mixture of a transition metal salt of a strong inorganic acid and a transition metal salt of an aliphatic carboxylic acid containing up to about 4 carbon atoms. In a preferred embodiment of the process the reactants are at least one aromatic diester and at least one aromatic dicarboxylic acid. Alternatively, the ester and carboxylic acid functional groups required for the acid interchange reaction may be provided upon the same molecule. Halogen or other substituent groups which do not interfere with the acid interchange reaction optionally may be present upon the aromatic rings.

摘要翻译： 提供了用于形成芳族聚酯的改进的酸交换聚合方法。 酯和羧酸官能团在催化有效量的催化剂的存在下反应，催化剂由强无机酸的过渡金属盐和含有至多约4个碳原子的脂族羧酸的过渡金属盐的混合物组成 。 在该方法的优选实施方案中，反应物是至少一种芳族二酯和至少一种芳族二羧酸。 或者，可以在相同的分子上提供酸交换反应所需的酯和羧酸官能团。 不干扰酸交换反应的卤素或其它取代基任选地可以存在于芳族环上。

公开(公告)号：US4778873A

公开(公告)日：1988-10-18

申请号：US45497

申请日：1987-05-04

申请人： Naoya Ogata

发明人： Naoya Ogata

IPC分类号： B01J27/182 ,  B01J31/02 ,  B01J31/06 ,  C08G18/16 ,  C08G63/82 ,  C08G63/87 ,  C08G69/04 ,  C08G69/28 ,  C08G63/04 ,  C08G63/68

CPC分类号： B01J31/06 ,  B01J27/182 ,  B01J31/0267 ,  C08G18/168 ,  C08G63/87 ,  C08G69/04 ,  C08G69/28

摘要： Condensation polymers of high molecular weight, such as polymers, polyureas, and polyamides, are usually prepared at temperatures of 200.degree. C. or greater. However, by utilizing the catalyst system of the present invention condensation polymers can be synthesized at much lower temperatures. These catalyst systems are comprised of (1) a silicon-phosphorus composition which contains at least one divalent oxygen atom which is bonded directly to a tetravalent silicon atom and a trivalent or pentavalent phosphorus atom; and (2) at least one acid acceptor. For example, P(OSiR.sub.3).sub.3 wherein R can be an aliphatic or aromatic hydrocarbon radical, can be used in conjunction with a basic solvent as a catalyst system. Polymeric agents having pendant diphenylphosphine dichloride groups can also be used in conjunction with an acid acceptor as a catalyst system.

摘要翻译： 通常在200℃或更高的温度下制备高分子量的缩合聚合物，如聚合物，聚脲和聚酰胺。 然而，通过利用本发明的催化剂体系，可以在更低的温度下合成缩聚物。 这些催化剂体系包括（1）含有至少一个二价氧原子的硅磷组合物，其直接键合到四价硅原子和三价或五价磷原子上; 和（2）至少一种酸受体。 例如，其中R可以是脂族或芳族烃基的P（OSiR 3）3可以与作为催化剂体系的碱性溶剂结合使用。 具有二苯基二氯化膦侧基的聚合物也可以与作为催化剂体系的酸受体结合使用。

公开(公告)号：US4680376A

公开(公告)日：1987-07-14

申请号：US871000

申请日：1986-06-05

申请人： Helmut Heinze ,  Fritz Wilhelm

发明人： Helmut Heinze ,  Fritz Wilhelm

IPC分类号： C08G63/183 ,  C08G63/78 ,  C08G63/82 ,  C08G63/85 ,  C08G63/04 ,  C08G63/34

CPC分类号： C08G63/78

摘要： A process for continuous production of high molecular polybutyleneterephthalate by direct esterification of terephthalic acid and 1,4 butanediol in the presence of tin- or titanium-containing catalysts at preferred temperatures of 235.degree. to 250.degree. C., and preferred pressures of 0.3 to 0.6 bar during the first stage--with minimal formation of tetrahydrofurane--followed by precondensation and polycondensation at reduced pressure.

摘要翻译： 在含有钛或钛的催化剂的存在下，在优选的温度为235-250℃，优选的压力为0.3至0.6的条件下，通过直接酯化对苯二甲酸和1,4-丁二醇来连续生产高分子聚对苯二甲酸丁二酯的方法 在第一阶段 - 最少形成四氢呋喃 - 随后在减压下进行预缩合和缩聚。

公开(公告)号：US4608432A

公开(公告)日：1986-08-26

申请号：US779169

申请日：1985-09-23

申请人： George Magnus ,  Melvin Loeb ,  Robert J. Wood ,  Brian Kelley

发明人： George Magnus ,  Melvin Loeb ,  Robert J. Wood ,  Brian Kelley

IPC分类号： C08G18/00 ,  C08G18/42 ,  C08G63/18 ,  C08G63/672 ,  C08G63/78 ,  C08G63/91 ,  C08L67/00 ,  C08L67/02 ,  C08G63/04 ,  C08G63/22

CPC分类号： C08G18/4213 ,  C08G63/672 ,  C08G2101/0025 ,  C08G2101/005 ,  C08G2105/02

摘要： Terephthalate polyester polyol blends comprising reaction products of a combination of polyethylene terephthalate, a polybasic carboxylic acid compound, a low molecular weight diol compound and a compatibilizer compound are compatible with fluorocarbon blowing agents. These polyol blends are produced by a simple heating process and are thereafter blendable with various conventional polyols and other additives to make resin prepolymer blends which can be catalytically reacted with organic isocyanates to produce cellular polyurethanes and polyurethane/polyisocyanurates.

摘要翻译： 包含聚对苯二甲酸乙二醇酯，多元羧酸化合物，低分子量二醇化合物和增容剂化合物的组合的反应产物的对苯二甲酸酯聚酯多元醇共混物与氟碳发泡剂相容。 这些多元醇共混物通过简单的加热方法制备，然后与各种常规多元醇和其它添加剂共混以制备可与有机异氰酸酯催化反应以制备多孔聚氨酯和聚氨酯/聚异氰脲酸酯的树脂预聚物共混物。