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    • 1. 发明授权
    • Copolyacetal
    • 共聚缩醛
    • US06255440B1
    • 2001-07-03
    • US09646752
    • 2000-09-21
    • Hidetoshi OkawaYoshihisa Tajima
    • Hidetoshi OkawaYoshihisa Tajima
    • C08G222
    • C08L59/00C08G2/22
    • Polyacetal copolymers, obtained by copolymerizing (A) 100 parts by weight of trioxane, (B) 0.01 to 10 part(s) by weight of at least one compound selected from among glycidyl ether compounds of the following general formula (I), (II) or (III) and (C) 0 to 20 part(s) by weight of a cyclic ether compound [excluding the glydicyl ether compound (B)] copolymerizable with trioxane, are a polyacetal resin having a high rigidity, excellent creep properties, a high surface hardness and excellent sliding properties: wherein R1 is a C1-12 alkyl group, an aryl group or a substtituted aryl group; wherein R2 represents a C2-20 polyalkylene oxide glycol residue; wherein R4 represents an alkyl group having 1 to 30 carbon atoms; R5 represents an alkylene group having 1 to 30 carbon atoms.
    • 通过共聚合(A)100重量份三恶烷,(B)0.01〜10重量份的至少一种选自下述通式(I)的缩水甘油醚化合物,(II)的缩水甘油醚化合物 )或(III)和(C)0〜20重量份可与三恶烷共聚的环醚化合物[不包括乙二醇醚化合物(B)]是具有高刚性,优异蠕变性能的聚缩醛树脂, 高表面硬度和优异的滑动性能:其中R1为C1-12烷基,芳基或取代的芳基;其中R2表示C2-20聚环氧烷二醇残基;其中R4表示1〜30的烷基 碳原子 R 5表示碳原子数1〜30的亚烷基。
    • 2. 发明授权
    • Lightweight thermoplastic polyester molding compositions, methods of
making the same and molded articles formed thereof
    • 轻质热塑性聚酯成型组合物,其制造方法和由其形成的模塑制品
    • US5349007A
    • 1994-09-20
    • US084439
    • 1993-07-01
    • Hajime SerizawaMasaru KubotaHiroyuki SanoYoshihisa Tajima
    • Hajime SerizawaMasaru KubotaHiroyuki SanoYoshihisa Tajima
    • C08F291/00C08F2/44C08F255/00C08F283/02C08G59/20C08K5/20C08L23/00C08L23/02C08L67/00C08L67/02
    • C08L23/02C08F255/00C08F283/02C08L67/00C08L67/02
    • Lightweight polyester resin molding compositions include a melt-blend of (A) between 97 to 20 parts by weight, based on 100 parts by weight of the total composition weight, of a polyester base resin, (B) between 3 to 80 parts by weight, based on 100 parts by weight of the total composition weight, of a polyolefin resin, (C) between 0.1 to 15 parts by weight, based on 100 parts by weight of the total composition weight, of a compatibilizing compound having a carbon-carbon double bond and an epoxy group in its molecule, (D) between 0.1 to 20% by weight, based on the weight of the compatibilizing compound, of a free radical initiator, and optionally, (E) up to 120 parts by weight, based on 100 parts by weight of the total composition, of a filler material. The free radical initiator is at least one compound having a one-minute half-life temperature of 130.degree. C. or greater, and is preferably pre-blended in solution form with the compatibilizing compound prior to being added to a melt of the polyester base resin and polyolefin resin. The resulting compositions may be molded to form relatively lightweight articles having minimal (if any) propensity to surface peel.
    • 轻质聚酯树脂模塑组合物包括(A)基于100重量份的总组合物重量为97至20重量份的聚酯基础树脂的熔融共混物,(B)3至80重量份 基于100重量份的总组合物重量的聚烯烃树脂,(C)基于100重量份的总组合物重量为0.1至15重量份的具有碳 - 碳的相容化合物 双键和分子中的环氧基,(D)基于相容化合物的重量,基于自由基引发剂的0.1-20重量%,和任选地(E)至多120重量份的基于 在100重量份的总组合物中,填充材料。 自由基引发剂是至少一种具有130℃或更高的一分钟半衰期的化合物,并且优选在相容化合物中以溶液形式预混合,然后加入到聚酯基料的熔体中 树脂和聚烯烃树脂。 所得到的组合物可以被模塑以形成具有最小(如果有的话)表面剥离倾向的相对轻质的制品。
    • 4. 发明授权
    • Polyacetal resin composition
    • 聚缩醛树脂组合物
    • US5278235A
    • 1994-01-11
    • US861806
    • 1992-06-18
    • Yoshihisa TajimaKeiichi Miyawaki
    • Yoshihisa TajimaKeiichi Miyawaki
    • C08L25/04C08L33/10C08L55/02C08L59/00C08L59/02C08L25/06C08L25/08
    • C08L59/00C08L25/04C08L33/10C08L55/02
    • To provide a polyacetal resin composition having a minimal molding shrinkage and capable of forming a molding having good surface conditions and being resistant to friction and abrasion by solving a problem of delamination and problems posed in molding and processing when a polystyrene resin is incorporated into a polyacetal resin in order to improve its properties.A thermoplastic polystyrene resin B is incorporated into a polyacetal resin A by using a thermoplastic acrylic resin C as the third component and a combination of components A and B each having a melt flow value satisfying a specified condition as the components A and B, said components A, B and C being used in amounts of 55 to 95 parts by weight, 43 to 3 parts by weight and 20 to 2 parts by weight, respectively, for 100 parts by weight of the sum of A, B and C.
    • PCT No.PCT / JP91 / 01713 Sec。 371日期:1992年6月18日 102(e)日期1992年6月18日PCT 1991年12月13日PCT PCT。 公开号WO92 / 10541 日期:1992年6月25日。为了提供具有最小成型收缩率的聚缩醛树脂组合物,并且能够形成具有良好表面状态并耐摩擦和磨损的成型体,通过解决分层问题和成型加工中产生的问题 将聚苯乙烯树脂掺入聚缩醛树脂中以改善其性能。 通过使用热塑性丙烯酸树脂C作为第三组分和各自具有满足特定条件的熔体流动值的组分A和B的组分作为组分A和B,将热塑性聚苯乙烯树脂B引入聚缩醛树脂A中,所述组分 对于100重量份的A,B和C的总和,A,B和C的用量分别为55至95重量份,43至3重量份和20至2重量份。
    • 7. 发明授权
    • Polyacetal copolymer and method for producing the same
    • 聚缩醛共聚物及其制造方法
    • US06426393B1
    • 2002-07-30
    • US09762064
    • 2001-02-01
    • Yoshihisa TajimaHidetoshi Okawa
    • Yoshihisa TajimaHidetoshi Okawa
    • C08L6102
    • C08G2/18
    • To provide polyacetal which has excellent shock resistance, rigidity and creep resistance as essential properties of the polymer and makes a high flowability and an excellent molding property upon molding possible by improving the thermal stability. In the manufacture of a polyacetal copolymer by a copolymerization of 100 parts by weight of trioxane (a) with 0.05-20 parts by weight of a cyclic ether compound (b) which is copolymerizable with trioxane and 0.001-10 parts by weight of a mono-functional glycidyl compound (c), the mono-functional glycidyl compound (c) having a chlorine content of not more than 0.3% by weight is used.
    • 提供作为聚合物的基本特性而具有优异的抗冲击性,刚性和抗蠕变性的聚缩醛,并且通过提高热稳定性,可以提高成型性,成型性优异。 在通过共聚合100重量份三恶烷(a)与0.05〜20重量份可与三恶烷共聚的环状醚化合物(b)和0.001-10重量份单体 功能性缩水甘油基化合物(c),使用氯含量不超过0.3重量%的单官能缩水甘油基化合物(c)。
    • 9. 发明授权
    • Branched polyacetal resin composition
    • 支化聚缩醛树脂组合物
    • US06583203B2
    • 2003-06-24
    • US09869805
    • 2001-07-05
    • Kuniaki KawaguchiHidetoshi OkawaYoshihisa Tajima
    • Kuniaki KawaguchiHidetoshi OkawaYoshihisa Tajima
    • C08K534
    • C08G2/18C08L59/00C08L59/04
    • To offer a resin material in which various properties such as excellent appearance and rigidity inherent to a polyacetal resin are maintained and a weather (light) resistance is improved. That is, a branched polyacetal resin composition comprising 100 parts by weight of a branched polyacetal copolymer (A) having an oxymethylene group as the main repeating unit and having a branching unit represented by the following formula (I), 0.01 to 5 parts by weight of a weather (light) resistant stabilizer (B) and 0.01 to 5 parts by weight of a hindered amine substance (C): wherein m and n each is an integer of 0 to 5; the sum of m+n is 1 to 5; and R is a monovalent organic group having a molecular weight of 40 to 1000.
    • 提供一种树脂材料,其中保持聚缩醛树脂固有的优异的外观和刚性等各种性能,并提高耐候性(耐光性)。 即,含有100重量份作为主要重复单元的具有甲醛基的支链聚缩醛共聚物(A)和由下式(I)表示的支化单元的支链聚缩醛树脂组合物,其为0.01〜5重量份 耐光稳定剂(B)和0.01〜5重量份的受阻胺物质(C):其中m和n各自为0至5的整数; m + n的和为1〜5; R为分子量为40〜1000的一价有机基团。
    • 10. 发明授权
    • Filled polyacetal resin compositions and processes for making the same
    • 填充聚缩醛树脂组合物及其制备方法
    • US5191011A
    • 1993-03-02
    • US899167
    • 1992-06-15
    • Yoshihisa TajimaMitsuru YokouchiMasaru Miura
    • Yoshihisa TajimaMitsuru YokouchiMasaru Miura
    • C08L33/06C08L59/00C08L61/20C08L83/04
    • C08L59/00C08L33/06C08L61/20C08L83/04
    • Polyacetal compositions are made by melt-blending a polyacetal base resin A, a filler material B, and a thermoplastic acrylic resin C in weight ratios which satisfy the following formulas (1) and (2):(B+C)/(A+B+C)=0.03 to 0.06 (1)C/(B+C)=0.05 to 0.95 (2).The thermoplastic acrylic resin C is most preferably selected from homopolymers of methyl methacrylate or copolymers which are mainly comprised of units derived from methyl methacrylate. The melt-blending of the polyacetal base resin A with the thermoplastic acrylic resin C is accomplished in the presence of a filler material B having a surface tension which is greater than that of the thermoplastic acrylic resin C at the melt-blending temperature. In this manner, a continuous phase of the thermoplastic acrylic resin is formed in a matrix of the polyacetal base resin such that the filler material is encapsulated in the continuous acrylic resin phase.
    • 聚缩醛组合物通过以满足下式(1)和(2)的重量比将聚缩醛基础树脂A,填料B和热塑性丙烯酸树脂C熔融共混而制备:(B + C)/(A + B + C)= 0.03〜0.06(1)C /(B + C)= 0.05〜0.95(2)。 热塑性丙烯酸树脂C最优选选自甲基丙烯酸甲酯的均聚物或主要由衍生自甲基丙烯酸甲酯的单元组成的共聚物。 聚缩醛基础树脂A与热塑性丙烯酸树脂C的熔融共混是在熔融共混温度下在表面张力大于热塑性丙烯酸树脂C的填料B的情况下进行的。 以这种方式,在聚缩醛基础树脂的基体中形成热塑性丙烯酸树脂的连续相,使得填充材料被包封在连续的丙烯酸树脂相中。