中科微点-全球专利检索

  1. Login
  2. Sign Up

Search Results

1239 records (took 0.018 seconds)

    Method for producing polyester foam using a blowing agent combination
    222.
    发明授权
    Method for producing polyester foam using a blowing agent combination 失效
    使用发泡剂组合生产聚酯泡沫的方法

    公开(公告)号：US5679295A

    公开(公告)日：1997-10-21

    申请号：US682889

    申请日：1996-07-11

    Applicant: Walter R. Harfmann

    Inventor： Walter R. Harfmann

    IPC: C08J9/12 ,  C08J9/14 ,  B29C44/20

    CPC classification number: C08J9/141 ,  C08J9/127 ,  C08J9/149 ,  C08J2201/03 ,  C08J2203/14 ,  C08J2203/142 ,  C08J2205/052 ,  C08J2367/02 ,  Y10S264/05

    Abstract: Low density PET foam is extruded by heating PET resin above the crystalline melt point to melt the resin, selecting a blowing agent combination, combining the blowing agent combination with the PET resin to create a mixture, cooling the mixture to a temperature of less than 538.degree. K., and extruding the foam through a die. The blowing agent combination is characterized by about 50 to less than 100 mole percent of a first blowing agent having a boiling temperature at STP of greater than 310.degree. K. The blowing agent combination is further characterized by more than 0 to about 50 mole percent of a second blowing agent having a boiling temperature at STP of less than 310.degree. K. The blowing agent combination has an equilibrium solubility vapor pressure in PET of less than 45 atm at the foaming temperature and greater than or equal to 1 atm at the glass transition temperature.

    Abstract translation: 通过在结晶熔点以上加热PET树脂来挤出低密度PET泡沫，以熔化树脂，选择发泡剂组合，将发泡剂组合与PET树脂组合以产生混合物，将混合物冷却至小于538℃ DEG K.并通过模头挤出泡沫。 发泡剂组合的特征在于沸点温度在STP大于310℃下的约50至小于100摩尔％的第一发泡剂。发泡剂组合的特征还在于大于0至约50摩尔％ 第二发泡剂的沸点温度在STP小于310℃。发泡剂组合在PET发泡温度下的平均溶解蒸气压小于45atm，玻璃化转变温度大于或等于1atm 温度。

    Process for producing alkenyl aromatic foams using a combination of atmospheric and organic gases and foams produced thereby
    223.
    发明授权
    Process for producing alkenyl aromatic foams using a combination of atmospheric and organic gases and foams produced thereby 失效
    使用大气和有机气体的组合制造烯基芳族泡沫的方法和由此产生的泡沫

    公开(公告)号：US5652277A

    公开(公告)日：1997-07-29

    申请号：US701804

    申请日：1996-08-26

    Applicant: Michael E. Reedy ,  Edward W. Rider, Jr.

    Inventor： Michael E. Reedy ,  Edward W. Rider, Jr.

    IPC: C08J9/12 ,  C08J9/00

    CPC classification number: C08J9/127 ,  C08J2201/024 ,  C08J2201/03 ,  C08J2203/14 ,  C08J2205/052 ,  C08J2353/00 ,  Y10S264/05

    Abstract: There is disclosed a process for producing alkenyl aromatic foams utilizing a combination of atmospheric and organic gases as blowing agent, preferably using greater than 30% by weight of atmospheric gas, and preferably also using a predetermined about of a masterbatch mix comprising a styrenic polymer, a rubbery block copolymer, and a solid blowing agent. Also disclosed are alkenyl aromatic foams produced by the process which exhibit increased densities, increased thermoforming capabilities, increased post-expansion properties, and increased retainment of the atmospheric and organic gases.

    Abstract translation: 公开了一种使用大气和有机气体作为发泡剂的组合制备烯基芳族泡沫的方法，优选使用大于30重量％的气氛气体，优选还使用预定的约含有苯乙烯聚合物的母料混合物， 橡胶状嵌段共聚物和固体发泡剂。 还公开了通过该方法生产的烯基芳族泡沫体，其显示增加的密度，增加的热成型能力，增加的后膨胀性能以及增加的大气和有机气体的保留。

    Process for producing alkenyl aromatic foams using a combination of atmospheric and organic gases
    224.
    发明授权
    Process for producing alkenyl aromatic foams using a combination of atmospheric and organic gases 失效
    使用大气和有机气体组合制备烯基芳族泡沫的方法

    公开(公告)号：US5595694A

    公开(公告)日：1997-01-21

    申请号：US163010

    申请日：1993-12-07

    Applicant: Michael E. Reedy ,  Edward W. Rider, Jr.

    Inventor： Michael E. Reedy ,  Edward W. Rider, Jr.

    IPC: C08J9/12 ,  B29C44/20

    CPC classification number: C08J9/127 ,  C08J2201/024 ,  C08J2201/03 ,  C08J2203/14 ,  C08J2205/052 ,  C08J2353/00 ,  Y10S264/05

    Abstract: A process for producing alkenyl aromatic foams utilizing a combination of atmospheric and organic gases as blowing agent, preferably using greater than 30% by weight of atmospheric gas, and preferably also using a predetermined about of a masterbatch mix comprising a styrenic polymer, a rubbery block copolymer, and a solid blowing agent. Also disclosed are alkenyl aromatic foams produced by the process which exhibit increased densities, increased thermoforming capabilities, increased post-expansion properties, and increased retainment of the atmospheric and organic gases.

    Abstract translation: 使用大气和有机气体的组合作为发泡剂制备烯基芳族泡沫的方法，优选使用大于30重量％的气氛气体，并且优选还使用预定的约含有苯乙烯聚合物的母料混合物，橡胶块 共聚物和固体发泡剂。 还公开了通过该方法生产的烯基芳族泡沫体，其显示增加的密度，增加的热成型能力，增加的后膨胀性能以及增加的大气和有机气体的保留。

    Hydrophilic porous material sterilizable with gamma-ray
    227.
    发明授权
    Hydrophilic porous material sterilizable with gamma-ray 失效
    亲水性多孔材料可用γ射线灭菌

    公开(公告)号：US5180492A

    公开(公告)日：1993-01-19

    申请号：US716287

    申请日：1991-06-17

    Applicant: Makoto Ohnishi ,  Kenichi Shimura

    Inventor： Makoto Ohnishi ,  Kenichi Shimura

    IPC: C08J7/18 ,  C08J9/28 ,  C08J9/40

    CPC classification number: C08J9/28 ,  C08J7/18 ,  C08J9/405 ,  C08J2201/03 ,  C08J2201/052 ,  C08J2201/0543 ,  C08J2201/0546 ,  C08J2323/12 ,  Y10T428/249979

    Abstract: A .gamma.-ray-sterilizable hydrophilic porous material has been found which includes a continuous layer made of a synthetic polymer compound forming a porous substrate and a hydrophilic and .gamma.-ray-resistant polymer supported on at least part of the surface of the porous substrate in an amount not less than 5% by weight, based on the porous substrate. The hydrophilic porous material has an average pore diameter in the range of 0.02 to 20 .mu.m, a porosity in the range of 10 to 90% and a wall thickness in the range of 10 .mu.m to 5.0 mm.

    Abstract translation: 已经发现了一种γ-射线消毒的亲水性多孔材料，其包括由形成多孔基材的合成高分子化合物制成的连续层，以及负载在多孔基材表面的至少部分表面上的亲水性和耐γ射线抗性聚合物 基于多孔基材的量不小于5重量％。 亲水性多孔质材料的平均孔径为0.02〜20μm，孔隙率为10〜90％，壁厚在10〜5.0mm的范围内。

    0.1 Micron rated polypropylene membrane and method for its preparation
    229.
    发明授权
    0.1 Micron rated polypropylene membrane and method for its preparation 失效
    0.1微米级聚丙烯膜及其制备方法

    公开(公告)号：US4490431A

    公开(公告)日：1984-12-25

    申请号：US438823

    申请日：1982-11-03

    Applicant: Gunter H. Vitzthum ,  Michael A. Davis

    Inventor： Gunter H. Vitzthum ,  Michael A. Davis

    IPC: B01D67/00 ,  B01D69/02 ,  B01D71/26 ,  C08J9/00 ,  C08J9/28 ,  B32B3/00 ,  B29D27/04

    CPC classification number: C08J9/28 ,  B01D67/003 ,  B01D69/02 ,  B01D71/26 ,  C08J2201/03 ,  C08J2201/052 ,  C08J2201/0542 ,  C08J2323/12 ,  Y10T428/249979

    Abstract: There is disclosed a substantially skinless microporous polypropylene membrane characterized by having(a) a bubble point of about 25 to about 50 psi;(b) a thickness of about 3 to about 7 mils;(c) a nitrogen flow rate of at least 0.5 liters per square centimeter-minute;(d) a burst strength of at least 10 psi; and(e) an S value of about 15, or less.There is also disclosed a method of preparing a microporous polypropylene membrane comprising heating a mixture of about 30 percent polypropylene and about 70 percent, N,N-bis(2-hydroxyethyl)tallowamine, by weight, to a temperature and for a time sufficient to form a homogeneous solution, casting or extruding said solution at a thickness of about 3 to about 7 mils, onto a chill roll maintained at a temperature of from about 50.degree. to about 80.degree. C., allowing said solution to solidify on said chill roll to form a solid sheet, removing said solid sheet from said chill roll and removing at least a substantial portion of the liquid from said sheet to form the microporous polypropylene membrane.

    Abstract translation: 公开了一种基本上无皮的微孔聚丙烯膜，其特征在于具有（a）约25至约50psi的起泡点; （b）约3至约7密耳的厚度; （c）至少0.5升/平方厘米分钟的氮气流量; （d）至少10psi的爆裂强度; 和（e）约15或更小的S值。 还公开了一种制备微孔聚丙烯膜的方法，其包括将约30％聚丙烯和约70％重量的N，N-双（2-羟乙基）牛油胺的混合物加热到足以使 形成均匀的溶液，将所述溶液以约3至约7密耳的厚度浇铸或挤出到保持在约50℃至约80℃温度的冷却辊上，使所述溶液在所述冷却辊上固化 以形成固体片材，从所述冷却辊中除去所述固体片材并从所述片材中除去至少大部分的液体以形成微孔聚丙烯膜。

Patent Agency Ranking