公开(公告)号：US5270436A

公开(公告)日：1993-12-14

申请号：US711033

申请日：1991-06-06

申请人： Shinji Kubo ,  Noriyuki Tajiri ,  Hitoshi Iwasaki ,  Masayuki Takyu ,  Masahiro Itoh ,  Hirokazu Ito

发明人： Shinji Kubo ,  Noriyuki Tajiri ,  Hitoshi Iwasaki ,  Masayuki Takyu ,  Masahiro Itoh ,  Hirokazu Ito

IPC分类号： C08G63/20 ,  G03G9/087 ,  C08G63/00

CPC分类号： C08G63/20 ,  G03G9/08755

摘要： A polyester for electrophotography derived from(a) at least one component selected from tri- or tetra-basic acid components and tri- or tetra-hydric alcohols;(b) at least one component selected from dibasic carboxylic acids and lower alkyl esters thereof; and(c) at least one component selected from aromatic diols and alicyclic diolswherein the proportion of x (mole %) of component (a) to the whole acid components and the proportion y (mole %) of component (c) to the whole acid components satisfies the following formulae (1) and (2):y (253m+170n) log x-(176m+162n) (2)wherein 0

公开(公告)号：US5276127A

公开(公告)日：1994-01-04

申请号：US744333

申请日：1991-08-13

申请人： Masayuki Takyu ,  Noriyuki Tajiri ,  Hitoshi Iwasaki ,  Shinji Kubo ,  Masahiro Itoh ,  Hirokazu Ito

发明人： Masayuki Takyu ,  Noriyuki Tajiri ,  Hitoshi Iwasaki ,  Shinji Kubo ,  Masahiro Itoh ,  Hirokazu Ito

IPC分类号： C08G63/20 ,  G03G9/087 ,  C08G63/02

CPC分类号： C08G63/20 ,  G03G9/08755

摘要： A polyester resin for a toner capable of being stably prepared without an occurrence of an abrupt crosslinking reaction is provided. This polyester resin has a crosslinked structure and is derived from (a) at least one member selected from the group consisting of tribasic and tetrabasic carboxylic acid components and trihydric and tetrahydric alcohol components, (b) an aromatic or alicyclic diol component, at least one of the hydroxyl groups of which is a secondary hydroxyl group, (c) optionally other diol component, and (d) a dicarboxylic acid component, wherein the contents of the units of the component (a) and the units of the component (b) satisfy the requirement represented by the following formula (1):(8m+20n)a-(80m+80n).ltoreq.b.ltoreq.(8m+20n)a-(12m+30n) (1)wherein m represents the molar fraction of the tribasic carboxylic acid component and trihydric alcohol component units in the units derived from the component (a), n represent the molar fraction of the tetrabasic carboxylic acid component units and tetrahydric alcohol component units in the units derived from the component (a), the sum of m and n is equal to 1, and a and b represent the molar ratios (mole %) of the units of the component (a) and the units of the component (b) based on the total of the carboxylic acid components, respectively.

摘要翻译： 提供了一种能够稳定地制备而不发生突然交联反应的调色剂用聚酯树脂。 该聚酯树脂具有交联结构，并且衍生自（a）选自三元和四元羧酸组分和三元和四元醇组分中的至少一种，（b）芳族或脂环族二醇组分，至少一种 其中羟基为仲羟基，（c）任选其它二醇组分，和（d）二羧酸组分，其中组分（a）的单元含量和组分（b）的单元含量， 满足由下式（1）表示的要求：（8m + 20n）a-（80m + 80n）<= b <=（8m + 20n）a-（12m + 30n）（1）其中m表示摩尔分数 的三元羧酸组分和三元醇组分单元的衍生自组分（a）的单元，n表示衍生自组分（a）的单元中的四元羧酸组分单元和四元醇组分单元的摩尔分数， m和n的和等于1，而 a和b分别表示组分（a）的单元和组分（b）的单元的摩尔比（摩尔％），基于羧酸组分的总量。

公开(公告)号：US5057596A

公开(公告)日：1991-10-15

申请号：US553415

申请日：1990-07-17

申请人： Shinji Kubo ,  Noriyuki Tajiri ,  Masayuki Takyu ,  Ryo Funato ,  Hirokazu Ito

发明人： Shinji Kubo ,  Noriyuki Tajiri ,  Masayuki Takyu ,  Ryo Funato ,  Hirokazu Ito

IPC分类号： C08G63/12 ,  C08G63/20 ,  G03G9/087

CPC分类号： G03G9/08793 ,  C08G63/20 ,  G03G9/08755

摘要： Disclosed is a crosslinked polyester resin comprised of, based on the total acid units, (a) 1 to 30 mole % of units of a trihydric or higher alcohol or units of a trivalent or higher carboxylic acid, (b) 1 to 60 mole % of units of an alicyclic diol in which at least one alcohol component is a secondary alcohol, (c) 40 to 100 mole % of units of an aromatic dicarboxylic acid and (d) 40 to 99 mole % of units of a non-alicyclic diol, wherein the acid value is 0.5 to 25 mg-KOH/g, the glass transition temperature is 50.degree. to 80.degree. C., the softening temperature is not higher than 145.degree. C., the fixing-possible temperature covers a range of at least 30.degree. C., and the difference between the softening temperature and the glass transition temperature is not larger than 75.degree. C. The crosslinked polyester is used for toner for electrostatic recording.

公开(公告)号：US5153301A

公开(公告)日：1992-10-06

申请号：US811619

申请日：1991-12-23

申请人： Noriyuki Tajiri ,  Hirokazu Ito ,  Masayuki Takyu ,  Ryo Funato ,  Shinji Kubo

发明人： Noriyuki Tajiri ,  Hirokazu Ito ,  Masayuki Takyu ,  Ryo Funato ,  Shinji Kubo

IPC分类号： C08G63/181 ,  C08G63/672 ,  C09D167/02 ,  G03G9/087

CPC分类号： G03G9/08755 ,  C08G63/181 ,  C08G63/672 ,  C09D167/02

摘要： A polyester resin comprised of (a) units derived from a terephthalic acid component and/or a isophthalic acid component, (b) 0 to 80 mole %, based on the total carboxylic acid component, of units derived from a diol component represented by the formula: ##STR1## wherein R represents an alkyl group having 2 or 3 carbon atoms, and x and y are integers satisfying the requirement of 2.ltoreq.x+y.ltoreq.6,and (c) 20 to 200 mole %, based on the total carboxylic acid component, of units derived from an aliphatic diol component. The polyester has a weight average molecular weight M.sub.w of 3,000 to 20,000, a number average molecular weight M.sub.n of 1,000 to 10,000, a glass transition temperature T.sub.g of 40.degree. to 70.degree. C., and a softening temperature of 70.degree. to 130.degree. C. The polyester is valuable for a toner.

摘要翻译： 一种聚酯树脂，其包含（a）由对苯二甲酸组分和/或间苯二甲酸组分衍生的单元，（b）基于总羧酸组分为0至80摩尔％的衍生自由 式：其中R表示具有2或3个碳原子的烷基，x和y是满足2≤x+y≤6的整数，（c）20〜200摩尔％ 基于总羧酸组分，衍生自脂族二醇组分的单元。 聚酯的重均分子量Mw为3,000〜20,000，数均分子量Mn为1,000〜10,000，玻璃化转变温度Tg为40〜70℃，软化温度为70〜130℃ 聚酯对于调色剂是有价值的。

公开(公告)号：US4980448A

公开(公告)日：1990-12-25

申请号：US323793

申请日：1989-03-15

申请人： Noriyuki Tajiri ,  Masayuki Takyu ,  Hirokazu Ito ,  Ryo Funato ,  Shinji Kubo

发明人： Noriyuki Tajiri ,  Masayuki Takyu ,  Hirokazu Ito ,  Ryo Funato ,  Shinji Kubo

IPC分类号： C08G63/20 ,  G03G9/087

CPC分类号： G03G9/08755 ,  C08G63/20 ,  G03G9/08793

摘要： Disclosed is a crosslinked polyester for a toner, which has an acid value of 5 to 20 mgKOH/g, a flow index of 0.1.times.10.sup.-4 to 300.times.10.sup.-4 ml/sec and a softening point lower than 145.degree. C., the polyester being formed by mixing a dicarboxylic acid component, a diol component and at least one crosslinking component selected from a polyfunctional carboxylic acid component having a trivalency or a higher valency and a polyhydric alcohol component having a trivalency or a higher valency at a mixing ratio represented by the following formula (1), reacting the mixture at a reaction ratio represented by the following formula (2) and subjecting the esterification product to polycondensation and crosslinking.0.8.ltoreq.R.ltoreq.1+5a (1)0.7.ltoreq.P.ltoreq.[R/(1+a)].sup.1/2 (2)wherein R is the ratio of the mole number of the total alcohol components to the mole number of the total acid components, a is the ratio of the sum of the mole number of the polyvalent carboxylic acid component and the mole number of the polyhydric alcohol component to the mole number of the total acid components, and P is the conversion of the carboxylic acid components.The toner comprising this crosslinked polyester as the binder has an excellent offset-preventing property, low-temperature fixing property and blocking resistance and good charging characteristics with a high moisture resistance, and gives a copied image having good sharpness and image density.