Process for preparing in situ reticulated polyurethane foam

    公开(公告)号:US4656196A

    公开(公告)日:1987-04-07

    申请号:US904287

    申请日:1986-09-08

    摘要: An improved process for in situ production of a reticulated, open-cell polyurethane foam which comprises reacting a polyester/polyether polyol mixture with an aromatic polyisocyanate having a ratio of isocyanate moieties to aromatic moieties of about 2:1 in the presence of a catalyst and a blowing agent,the improvement comprises:said polyol mixture being(a) 80 to 95 parts by weight of polyester polyol and(b) 20 to 5 parts by weight of polyoxypropylene polyether polyol or a mixed poly(oxyethylene/oxypropylene polyether polyol, each having at least one polymer of ethylenically unsaturated monomers dispersed therein and a stabilizing surfactant for polyether polyurethane foam,and said process produces a polyurethane foam which has excellent strength properties and an exceeding low resistance to air flow.

    Process for preparing in situ reticulated polyurethane foam
    2.
    发明授权
    Process for preparing in situ reticulated polyurethane foam 失效
    制备原位网状聚氨酯泡沫的方法

    公开(公告)号:US4670477A

    公开(公告)日:1987-06-02

    申请号:US817456

    申请日:1986-01-09

    摘要: An improved process for in situ production of a reticulated, open-cell polyurethane foam which comprises reacting a polyester/polyether polyol mixture with an aromatic polyisocyanate having a ratio of isocyanate moieties to aromatic moieties of about 2:1 in the presence of a catalyst and a blowing agent,the improvement comprises:said polyol mixture being(a) 80 to 95 parts by weight of polyester polyol and(b) 20 to 5 parts by weight of polyoxypropylene polyether polyol or a mixed poly(oxyethylene/oxypropylene polyether polyol, each having at least one polymer of ethylenically unsaturated monomers dispersed therein and a stabilizing surfactant for polyether polyurethane foam,and said process produces a polyurethane foam which has excellent strength properties and an exceeding low resistance to air flow.

    摘要翻译: 用于原位生产网状开孔聚氨酯泡沫的改进方法,其包括在催化剂存在下使聚酯/聚醚多元醇混合物与异氰酸酯部分与芳族部分的比例为约2:1的芳族多异氰酸酯反应;和 发泡剂的改进包括:所述多元醇混合物为(a)80至95重量份聚酯多元醇和(b)20至5重量份聚氧丙烯聚醚多元醇或混合聚氧乙烯/氧丙烯聚醚多元醇 具有至少一种分散在其中的烯属不饱和单体的聚合物和用于聚醚聚氨酯泡沫的稳定表面活性剂,并且所述方法产生具有优异的强度性能和超过低的空气流阻力的聚氨酯泡沫。

    Energy absorbing foams
    3.
    发明授权
    Energy absorbing foams 失效
    吸收能量的泡沫

    公开(公告)号:US6034148A

    公开(公告)日:2000-03-07

    申请号:US1388

    申请日:1997-12-31

    摘要: Polyurethane foams formed at elevated pressure using a graft polyol, or mixture of polyols to form a polyol system, having a low functionality and a high solids content, exhibit superior dynamic shock cushioning characteristics (energy absorption) as illustrated by the drop curves of deceleration versus static load. The foam-forming ingredients are mixed together and foamed under controlled pressures in the range of 1.2 to 1.5 bar, preferably 1.3 to 1.4 bar. The polyol preferably has a functionality in the range of about 2.0 to 2.5, a hydroxyl number in the range of about 50 to 90, a solids content above about 35%, preferably about 50 to 55%.

    摘要翻译: 在高压下使用接枝多元醇或多元醇混合物形成的具有低官能度和高固体含量的多元醇体系的聚氨酯泡沫体具有优异的动态冲击缓冲特性(能量吸收),如减速相对于 静载荷。 将泡沫形成成分混合在一起并在1.2至1.5巴,优选1.3至1.4巴范围内的受控压力下发泡。 多元醇优选具有在约2.0至2.5范围内的官能度,约50至90的羟值,高于约35%,优选约50至55%的固体含量。

    Foam-fabric laminate for a cushion assembly
    5.
    发明授权
    Foam-fabric laminate for a cushion assembly 失效
    用于衬垫组件的泡沫织物层压板

    公开(公告)号:US5976685A

    公开(公告)日:1999-11-02

    申请号:US218525

    申请日:1998-12-22

    摘要: A seat cushion assembly is formed by (a) placing a foam-fabric laminate (14, 15) and an air impervious adhesive film (16) over a mold (18); (b) drawing the adhesive against the foam and urging the fabric against the mold by vacuum; (c) placing a foam pad (12) adjacent to the adhesive film; (d) heating the film and diffusing it into the foam pad and into the foam of the foam-fabric laminate; and (e) curing the film adhesive. The foam layer laminated to the fabric is formed as the reaction product of a polyether polyol or a graft polyether polyol with about 30 to 60 parts by weight of an MDI or polymeric MDI/TDI blended isocyanate with the major portion MDI or mixtures thereof, about 1.5 to 3.0 parts by weight water as a blowing agent, about 0.05 to about 0.90 parts by weight amine catalyst and about 0.5 to about 1.5 parts by weight silicone surfactant, wherein all amounts are based on 100 parts by weight polyol.

    摘要翻译: 座垫组件通过(a)将泡沫织物层压板(14,15)和不透气的粘合剂膜(16)放置在模具(18)上而形成; (b)将粘合剂拉到泡沫上并通过真空将织物推向模具; (c)将泡沫垫(12)放置在所述粘合膜附近; (d)加热膜并将其扩散到泡沫垫中并进入泡沫织物层压体的泡沫中; 和(e)固化膜粘合剂。 层压到织物上的泡沫层形成为聚醚多元醇或接枝聚醚多元醇与约30至60重量份的MDI或聚合MDI / TDI混合异氰酸酯与主要MDI或其混合物的反应产物,约 1.5至3.0重量份的水作为发泡剂,约0.05至约0.90重量份的胺催化剂和约0.5至约1.5重量份的有机硅表面活性剂,其中所有的量都是基于100重量份的多元醇。

    Electrical socket for high-frequency applications
    6.
    发明授权
    Electrical socket for high-frequency applications 失效
    电插座用于高频应用

    公开(公告)号:US5586891A

    公开(公告)日:1996-12-24

    申请号:US237676

    申请日:1994-05-04

    IPC分类号: G01R1/04 H05K7/10 H01R9/09

    摘要: An electrical socket is disclosed for interfacing between a printed circuit board having contact pads and an electronic module having external leads, such as an integrated circuit. The electrical socket includes a base frame, containing an opening generally conforming to the body shape and size of the electronic module, and a plurality of spaced, parallel conductive members, such as electrical wires, arrayed on a resilient strip coextensive with at least part of the surface of the opening. Each conductive member includes both a lead portion in adjacent parallel relationship with one of the electronic module external leads and a contact portion in electrical engagement with a contact pad, and may also include a retaining portion for securing the conductive member to the resilient strip. The electrical socket may include a cover, with thermal vent holes, to secure the electronic module within the base frame opening.

    摘要翻译: 公开了一种用于在具有接触焊盘的印刷电路板和具有诸如集成电路的外部引线的电子模块之间进行接口的电插座。 电插座包括基架,其包含大致符合电子模块的主体形状和尺寸的开口,以及多个间隔开的平行导电构件,例如电线,排列在与至少部分 开口的表面。 每个导电构件包括与电子模块外部引线之一相邻并联关系的引线部分和与接触焊盘电接合的接触部分,并且还可以包括用于将导电部件固定到弹性条上的保持部分。 电插座可以包括具有热通气孔的盖,以将电子模块固定在基架开口内。

    Apparatus for catching fish and removing twist from twisted fishing line
    7.
    发明授权
    Apparatus for catching fish and removing twist from twisted fishing line 失效
    用于捕捞鱼和扭转钓鱼线的装置

    公开(公告)号:US5263277A

    公开(公告)日:1993-11-23

    申请号:US938284

    申请日:1992-08-31

    申请人: David J. Kelly

    发明人: David J. Kelly

    IPC分类号: A01K85/12 A01K91/00

    CPC分类号: A01K85/12

    摘要: An apparatus for attracting and catching fish while removing the twist in twisted fishing line. The device may comprise a body member that is adapted to be attached directly to the end of the twisted line. The body may be shaped such that when drawn through water it will impart a rotary motion to the twisted line or it may have fins attached thereto that cause the body to rotate in a desired direction as it is drawn through the water. A swivel is used to fasten a hook to the body and to disrupt the rotary motion that is transferred to the hook.

    摘要翻译: 一种用于吸引和捕捉鱼的装置,同时消除扭绞钓鱼线中的扭曲。 该装置可以包括主体构件,其适于直接附接到扭绞线的端部。 主体可以被成形为使得当通过水被抽出时,其将赋予扭转线的旋转运动,或者可以具有附接到其上的翅片,这使得身体在被抽吸通过水时沿期望的方向旋转。 旋转头用于将钩子固定在身体上,并破坏转移到钩子上的旋转运动。

    Modified rebond polyurethane foam structure and method of making such
structure
    9.
    发明授权
    Modified rebond polyurethane foam structure and method of making such structure 失效
    改性聚氨酯泡沫结构及其制备方法

    公开(公告)号:US6136870A

    公开(公告)日:2000-10-24

    申请号:US241619

    申请日:1999-02-02

    摘要: Modified or filled rebond polyurethane foam structures having desired plushness and compression without adversely affected tensile strength at a given density as compared to unfilled rebond polyurethane foams are formed from an admixture of shredded or chopped polyurethane foam particles and a finely divided inorganic mineral filler, such as barium sulfate or calcium carbonate or mixtures of these and like mineral fillers, that is further mixed with a substantially non-foam forming liquid prepolymer binder that is free of surfactants in foam-stabilizing amounts. A portion of the polyurethane foam particles, from about 10 to about 60 parts by weight based upon 100 parts by weight, is replaced with filler. For each 100 parts by weight of the combined foam particles and filler, about 10 to about 30 parts by weight of prepolymer is added. After the wetted admixture is compressed to the required density, the prepolymer binder is cured with heat and/or steam. Surprisingly, the resultant filled rebond polyurethane foam structure is more plush and softer than unfilled rebond foam, and the filler is uniformly distributed throughout the cured binder and external to the foam cells of the foam particles.

    摘要翻译: 与未填充的聚氨酯泡沫相比,具有期望的绒毛和压缩而在给定密度下没有不利影响的拉伸强度的改性或填充的聚氨酯泡沫结构由切碎的或切碎的聚氨酯泡沫颗粒和细碎的无机矿物填料的混合物形成,例如 硫酸钡或碳酸钙或这些和类似矿物填料的混合物,其进一步与基本上不发泡的液体预聚物粘合剂混合,所述粘合剂在泡沫稳定量中不含表面活性剂。 聚氨酯泡沫颗粒的一部分,基于100重量份约10至约60重量份,用填料代替。 对于每100重量份的组合的泡沫颗粒和填料,加入约10至约30重量份的预聚物。 将湿润的混合物压缩至所需的密度后,用热和/或蒸汽固化预聚物粘合剂。 令人惊讶的是,所形成的填充聚氨酯泡沫结构的填充比未填充的泡沫泡沫更加毛绒和柔软,并且填料均匀地分布在整个固化的粘合剂中并且在泡沫颗粒的泡沫单元之外。

    Method of forming foam-fabric laminates
    10.
    发明授权
    Method of forming foam-fabric laminates 失效
    形成泡沫织物层压板的方法

    公开(公告)号:US5891293A

    公开(公告)日:1999-04-06

    申请号:US730969

    申请日:1996-10-16

    摘要: In a method for bonding a foam-fabric composite to a molded foam core, particularly suitable for use as an automotive cushion assembly, specific advantageous polymeric MDI-based foams are used to achieve consistently excellent bond strength. In the method, a foam layer is flame laminated to a fabric layer. Then the foam-fabric laminate and an air impervious adhesive film are placed over a mold surface, and the adhesive is drawn against the foam of the foam-fabric laminate and the fabric layer is urged against the mold surface by applied vacuum. The foam core pad is placed adjacent to the adhesive film. The film is heated and diffused into the foam pad and into the foam of the foam-fabric laminate, respectively, and allowed to cure. The foam layer laminated to the fabric is formed as the reaction product of a polyether polyol or a graft polyether polyol with from about 30 to about 60 parts by weight of an MDI or a polymeric MDI/TDI blended isocyanate or mixtures thereof, from about 1.5 to 3.0 parts by weight water as blowing agent, from about 0.05 to about 0.20 parts by weight tin catalyst, from about 0.15 to 0.90 parts by weight amine catalyst and from about 0.5 to about 1.5 parts by weight silicone surfactant, wherein all amounts are based on 100 parts by weight polyol.

    摘要翻译: 在将泡沫纤维复合材料粘合到模制泡沫芯上的方法中,特别适合用作汽车衬垫组件,使用特定的有利的聚合MDI基泡沫以获得一致的优异的粘结强度。 在该方法中,泡沫层被火焰层压到织物层上。 然后将泡沫织物层压体和不透气的粘合剂膜放置在模具表面上,并且将粘合剂拉伸到泡沫织物层压体的泡沫上,并且通过施加的真空将织物层推向模具表面。 将泡沫芯垫放置在与粘合膜相邻的位置。 将膜分别加热并扩散到泡沫垫中并进入泡沫织物层压体的泡沫中,并使其固化。 层压到织物上的泡沫层形成为聚醚多元醇或接枝聚醚多元醇与约30至约60重量份MDI或聚合MDI / TDI共混异氰酸酯或其混合物的反应产物,约1.5 至3.0重量份的水作为发泡剂,约0.05至约0.20重量份的锡催化剂,约0.15至0.90重量份的胺催化剂和约0.5至约1.5重量份的有机硅表面活性剂,其中所有的量都是基于 在100重量份的多元醇上。