公开(公告)号：US11981772B2

公开(公告)日：2024-05-14

申请号：US17275755

申请日：2019-09-10

Applicant: ASAHI KASEI KABUSHIKI KAISHA

Inventor： Chihiro Suemitsu ,  Hitoshi Mizomoto ,  Kenji Ebara ,  Tatsuya Suzuki

IPC: C08G2/04 ,  C08G2/06 ,  C08G2/10 ,  C08G2/18

CPC classification number: C08G2/10 ,  C08G2/04 ,  C08G2/06 ,  C08G2/18 ,  C08G2650/22 ,  C08G2650/38

Abstract: Polyoxymethylene, where a ratio of a low molecular weight component having a molecular weight of 10,000 or less in a molecular weight distribution is 7.0% or less of the total, and the molecular weight distribution is obtained by measurement by gel permeation chromatography (GPC) using polymethyl methacrylate (PMMA) as a standard substance.

公开(公告)号：US20160115270A1

公开(公告)日：2016-04-28

申请号：US14894158

申请日：2014-05-26

Applicant: BASF SE

Inventor： Laurence POTTIE ,  Juergen DEMETER ,  Marie-Claire HERMANT

IPC: C08G2/08 ,  C08G59/02 ,  C08G65/00

CPC classification number: C08G2/08 ,  C08G2/06 ,  C08G2/10 ,  C08G2/18 ,  C08G2/22 ,  C08G4/00 ,  C08G59/02 ,  C08G65/00 ,  C08L59/04

Abstract: The patent application relates to a process for preparing polyoxymethylene by polymerization of a reaction mixture (RG) which comprises at least one formaldehyde source and at least one initiator mixture (IG), wherein the initiator mixture (IG) comprises at least one polymerization initiator and at least one solvent of the general formula (I) R1—O—[—R3—O—]m—R2  (I), where m is 1, 2, 3 or 4; R1 and R2 are each, independently of one another, C3-C6-alkyl; R3 is C1-C5-alkylene.

Abstract translation: 该专利申请涉及通过聚合包含至少一种甲醛源和至少一种引发剂混合物（IG）的反应混合物（RG）来制备聚甲醛的方法，其中引发剂混合物（IG）包含至少一种聚合引发剂和 至少一种通式（I）R 1 -O - [ - R 3 -O-] m -R 2（I）的溶剂，其中m为1,2,3或4; R 1和R 2各自独立地为C 3 -C 6 - 烷基; R3是C1-C5-亚烷基。

公开(公告)号：US08859721B2

公开(公告)日：2014-10-14

申请号：US13570904

申请日：2012-08-09

Applicant: Jürgen Deininger ,  Jürgen Demeter ,  Rüdiger Häffner ,  Ralf Schulz ,  Achim Stammer

Inventor： Jürgen Deininger ,  Jürgen Demeter ,  Rüdiger Häffner ,  Ralf Schulz ,  Achim Stammer

IPC: C08F6/16 ,  C08G2/38 ,  C08L59/00 ,  C08G2/00 ,  C08G2/18

CPC classification number: C08G2/00 ,  C08G2/18 ,  C08G2/38 ,  C08L59/00

Abstract: The invention relates to a process for working up particulate crude polyoxymethylene, which comprises the following steps: (a) introduction of the particulate crude polyoxymethylene into an extraction column (13) operated at a pressure in the range from 1 to 6 bar, (b) introduction of a polar extractant into the extraction column (13) with a temperature in the range from 95 to 140° C. and a pressure in the range from 1 to 6 bar, wherein from 10 to 1000 ppm, based on the amount of polar extractant introduced, of a buffer substance which buffers in the pH range from 7.5 to 11.5 are introduced into the extraction column (13).

Abstract translation: 本发明涉及一种加工微粒粗聚甲醛的方法，其包括以下步骤：（a）将颗粒状粗聚甲醛引入到在1-6巴压力下操作的萃取塔（13）中，（b ）将极性萃取剂引入萃取塔（13）中，温度为95至140℃，压力为1至6巴，其中10至1000ppm，基于 引入缓冲物质的极性萃取剂，其缓冲液的pH范围为7.5〜11.5，被引入提取塔（13）。

公开(公告)号：US20140024801A1

公开(公告)日：2014-01-23

申请号：US14034839

申请日：2013-09-24

Applicant: UNVERSITY OF FLORIDA RESEARCH FOUNDATION, INC.

Inventor： STEPHEN A. MILLER ,  ALEXANDER G. PEMBA

IPC: C08G65/00

CPC classification number: C08G65/00 ,  C08G2/06 ,  C08G2/18 ,  C08G4/00 ,  C08L59/04

Abstract: A method of preparing a polyacetal comprising polymerization of a mixture comprising a plurality of at least one bis-acetal monomer in the presence of an acid catalyst that promotes the metathesis of the acetal units. The bis-acetal can be formed from an acid catalyzed exchange between a mono-acetal monomer with a diol. The formation of the bis-acetal and the polyacetal can be carried out simultaneously. The diol can be isolated from a biorenewable source and the ultimate polyacetal is a degradable or biodegradable polymer.

Abstract translation: 一种制备聚缩醛的方法，包括在促进缩醛单元的复分解的酸催化剂存在下包含多个至少一种双缩醛单体的混合物的聚合。 双缩醛可以由单缩醛单体与二醇之间的酸催化交换形成。 双缩醛和聚缩醛的形成可以同时进行。 二醇可以从生物可再生源分离，最终的聚缩醛是可降解或可生物降解的聚合物。

公开(公告)号：US06365704B1

公开(公告)日：2002-04-02

申请号：US09869807

申请日：2001-07-05

Applicant: Hidetoshi Okawa ,  Kaoru Yamamoto

Inventor： Hidetoshi Okawa ,  Kaoru Yamamoto

IPC: C08G1226

CPC classification number: C08G2/22 ,  C08G2/18 ,  C08G2/20 ,  C08G12/26

Abstract: To provide a resin material in which various properties of a polyacetal resin such as excellent appearance, slidability and thermal stability are maintained and a rigidity is improved as well. That is, a polyacetal copolymer which is prepared by a copolymerization of 100 parts by weight of trioxane (A), 0.0005 to 2 parts by weight of the component (B), which is a compound (B-1) having at least three glycidyl groups in the molecule or a compound (B-2) having at least two epoxy groups in the molecule, and 0 to 20 parts by weight of a cyclic ether compound (C) copolymerizable with trioxane, and which has a total terminal group amount of 15 to 150 mmol/kg, when (B) is (B-2).

Abstract translation: 提供一种树脂材料，其中保持诸如优异的外观，滑动性和热稳定性的聚缩醛树脂的各种性质以及改善刚性。 即，通过共聚合100重量份的三恶烷（A），0.0005〜2重量份的成分（B），即具有至少3个缩水甘油基的化合物（B-1）而制备的聚缩醛共聚物 分子中具有至少两个环氧基的化合物（B-2）和0〜20重量份与三恶烷可共聚的环状醚化合物（C），并且其末端基总量为 （B）为（B-2）时为15〜150mmol / kg。

公开(公告)号：US6072021A

公开(公告)日：2000-06-06

申请号：US176609

申请日：1998-10-21

Applicant: Douglas John Adelman ,  Richard Beckerbauer

Inventor： Douglas John Adelman ,  Richard Beckerbauer

IPC: C08G2/06 ,  C08G2/18 ,  C08G2/22 ,  C08G4/00 ,  C07D317/01 ,  C07D321/12

CPC classification number: C08G4/00 ,  C08G2/06 ,  C08G2/18 ,  C08G2/22

Abstract: This invention concerns a process for the copolymerization of formaldehyde with cyclic ethers, the process comprising combining in a hydrocarbon solvent a cyclic ether, a cationic initiator comprising an anion formed from tetraphenyl borate derivatives, and mixtures thereof, and a cation, and anhydrous formaldehyde. These initiators provide high activity, high cyclic ether incorporation rates, and stability while minimizing the production of by-products.

Abstract translation: 本发明涉及甲醛与环醚共聚的方法，该方法包括在烃溶剂中结合环醚，包含由四苯基硼酸盐衍生物形成的阴离子的阳离子引发剂及其混合物，以及阳离子和无水甲醛。 这些引发剂提供高活性，高环醚并入速率和稳定性，同时最小化副产物的生产。

公开(公告)号：US5288840A

公开(公告)日：1994-02-22

申请号：US859440

申请日：1992-06-02

Applicant: Hirohisa Morishita ,  Kazuhiko Matsuzaki

Inventor： Hirohisa Morishita ,  Kazuhiko Matsuzaki

IPC: C08G2/18 ,  C08K3/26 ,  C08G14/02

CPC classification number: C08G2/18 ,  C08K3/26

Abstract: A polyoxymethylene copolymer excellent in stability and mechanical properties which is comprised of oxymethylene units and oxyalkylene units and has a molecular weight of 10,000 to 200,000. The proportion of oxyalkylene units to oxymethylene units is 0.07 to 0.5% by mole and the ratio of the absorbance of terminal formate groups to that of methylene groups determined by infrared spectrophotometry is not more than 0.025. A process for producing the copolymer is also disclosed.

Abstract translation: PCT No.PCT / JP91 / 00039 Sec。 371日期：1992年6月2日 102（e）日期1992年6月2日PCT 1991年1月17日PCT。一种由甲醛单元和氧化烯单元组成且分子量为10,000〜200,000的稳定性和机械性能优异的聚甲醛共聚物。 氧化烯单元与甲醛单元的比例为0.07〜0.5摩尔％，通过红外分光光度法测定末端甲酸酯基与亚甲基的吸光度比不大于0.025。 还公开了制备共聚物的方法。

公开(公告)号：US5034499A

公开(公告)日：1991-07-23

申请号：US181233

申请日：1988-04-13

Applicant: Nan-Loh Yang ,  Andrew Auerbach ,  James L. Paul ,  Yong C. Zheng ,  Shian S. Wang

Inventor： Nan-Loh Yang ,  Andrew Auerbach ,  James L. Paul ,  Yong C. Zheng ,  Shian S. Wang

IPC: C07D321/06 ,  C07D493/04 ,  C08G2/00 ,  C08G2/10 ,  C08G2/18 ,  C08G4/00 ,  C08G18/00 ,  C08G18/56 ,  C08G59/20 ,  C08G77/42

CPC classification number: C08G4/00 ,  C07D321/06 ,  C08G18/003 ,  C08G18/56 ,  C08G2/18 ,  C08G77/42

Abstract: Acetal copolymers of trioxane with epoxy functional groups are obtained by copolymerizing trioxane with 5,6-epoxy-1,3-dioxepane. The epoxide group in the polymer chain provides a highly reacting functional group for further modification. Acetal copolymers with backbone epoxide groups exhibit toughness and thermal stability. The backbone epoxide groups can also be aminated in a one step hydrolysis-amination process.

公开(公告)号：US4988397A

公开(公告)日：1991-01-29

申请号：US892622

申请日：1986-04-30

Applicant: Horst G. Adolph ,  Judah Goldwasser ,  G. William Lawrence

Inventor： Horst G. Adolph ,  Judah Goldwasser ,  G. William Lawrence

IPC: C06B45/10 ,  C08G2/18 ,  C08G18/56

CPC classification number: C08G2/18 ,  C06B45/105 ,  C08G18/56

Abstract: An energetic uncured binder composite mixture comprising(1) a hydroxy-terminated polyfluoroformal prepolymer of the general formulaHOCH.sub.2 (CF.sub.2).sub.n CH.sub.2 [OCH.sub.2 OCH.sub.2 (CF.sub.2).sub.nH.sub.2 ].sub.m OH wherein n is 3 or 4 and m is selected to provide a number average molecular weight of from about 1,000 to about 10,000 for the prepolymer; and(2) an energetic plasticizer which isbis(2,2-dinitropropyl)formal,bis(2,2-trinitroethyl)formal,bis(2-fluoro-2,2-dinitroethyl)formal,bis(2,2-difluoro-2-nitroethyl)formal,2,2-dinitropropyl 2-fluoro-2,2-dinitroethyl formal, or mixtures thereof;wherein the weight ratio of energetic plasticizer to prepolymer is from about 2:1 to about 5:1. This binder composite mixture is useful for preparing energetic plastic bonded explosives having high chemical and thermal stabilities.

Abstract translation: 一种能量未固化的粘合剂复合材料混合物，其包含（1）通式为HOCH 2（CF 2）n CH 2 [OCH 2 OCH 2（CF 2）n CH 2] m OH的羟基封端的多氟代预聚物，其中n为3或4并且m被选择以提供数均分子量 对于预聚物为约1,000至约10,000; 和（2）能量增塑剂，其为双（2,2-二硝基丙基）甲醛，双（2,2-三硝基乙基）甲醛，双（2-氟-2,2-二硝基乙基）甲醛，双（2,2-二氟 -2-硝基乙基）甲醛，2,2-二硝基丙基2-氟-2,2-二硝基乙基甲醛或其混合物; 其中能量增塑剂与预聚物的重量比为约2:1至约5:1。 该粘合剂复合混合物可用于制备具有高化学和热稳定性的高能塑料粘结炸药。

公开(公告)号：US4898925A

公开(公告)日：1990-02-06

申请号：US243381

申请日：1988-09-12

Applicant: George L. Collins ,  Kurt F. Wissbrun ,  Hongkyu Kim

Inventor： George L. Collins ,  Kurt F. Wissbrun ,  Hongkyu Kim

IPC: C08G2/22 ,  C08G2/18

CPC classification number: C08G2/18

Abstract: There are provided new elastomeric copolymers of about 15 to 45 mol %, preferably about 25 to 35 mol % trioxane, about 55 to 85 mol %, preferably about 65 to 75 mol % of 1,3-dioxolane, said mol percents based on the total of trioxane and 1,3-dioxolane, and about 0.005 to 0.15 wt. %, preferably about 0.05 to 0.12 wt. % of 1,4-butanediol diglycidyl ether or butadiene diepoxide as a bifunctional monomer, based on the total weight of copolymer. The elastomeric copolymers may be prepared by mixing said monomers in a substantially dry state and under an inert atmosphere with a cationic polymerization catalyst, e.g, p-nitrobenzenediazonium tetrafluoroborate. The elastomeric copolymers have a strong interaction with moldable, crystalline acetal polymers comprising at least 85 mol % of polymerized oxymethylene units and may be used as a blending agent with such crystalline acetal polymers or as a bonding agent to improve the adhesiveness of the crystalline acetal polymer to other materials.