Mold for the preparation of reinforced reaction injection molded products
    1.
    发明授权
    Mold for the preparation of reinforced reaction injection molded products 失效
    用于制备增强反应注塑产品的模具

    公开(公告)号:US4917902A

    公开(公告)日:1990-04-17

    申请号:US329729

    申请日:1989-03-28

    IPC分类号: B29C33/00 B29C33/10 B29C67/24

    摘要: The mold broadly consists of an upper and lower mold part. The parts define a mold cavity when the mold is in the closed position. A channel is provided in one of the parts, with the channel completely surrounding the cavity. One upper edge of the channel forms at least a portion of the outer edge of the mold cavity. The channel is at least partially filled with an elastomeric material. A shear plate is attached to the other part in a location opposite the channel. When the mold is in the closed position, the shear plate enters the channel, presses against the elastomeric material and presses against the outer edge of the mold cavity. The shear plate is also provided with one or more tapered slots which allow gases to escape from the mold cavity when the mold is in the closed position.

    摘要翻译: 模具广泛地包括上模具和下模具部件。 当模具处于关闭位置时,这些部件限定模具腔。 通道设置在其中一个部件中,通道完全围绕腔体。 通道的一个上边缘形成模腔的外边缘的至少一部分。 通道至少部分地填充有弹性体材料。 剪切板在与通道相对的位置附接到另一部分。 当模具处于关闭位置时,剪切板进入通道,压靠弹性体材料并压靠模腔的外边缘。 剪切板还设置有一个或多个锥形狭槽,当模具处于关闭位置时允许气体从模腔逸出。

    Process for the production of reinforced moldings and the resultant
products
    4.
    发明授权
    Process for the production of reinforced moldings and the resultant products 失效
    制造增强模制品和所得产品的方法

    公开(公告)号:US5244613A

    公开(公告)日:1993-09-14

    申请号:US6560

    申请日:1993-01-21

    CPC分类号: C08J9/32 C08J9/30 C08J2375/04

    摘要: It has been found that the use of specific expanded organic microspheres greatly improve the RIM process by (i) significantly enhancing the blowing action of air and/or nitrogen, (ii) providing for uniform density of the molded part, (iii) allowing for the reduction of internal mold pressures, (iv) substantially eliminating surface defects, (v) allowing for a significant reduction in density in the molded product, (vi) allowing for a substantial increase in the amount of air and/or nitrogen that can be dissolved in the isocyanate-reactive component, and (vii) significantly reducing shrinkage in the molded part.

    摘要翻译: 已经发现,通过使用(i)显着增强空气和/或氮的吹动作用,(ii)提供模制部件的均匀密度,(iii)允许使用特定的扩展的有机微球体大大改善RIM工艺 内部模具压力的降低,(iv)基本上消除表面缺陷,(v)允许模制产品中的密度显着降低,(vi)允许空气和/或氮的量显着增加, 溶解在异氰酸酯反应性组分中,和(vii)显着减少模塑部件的收缩。

    Process for the production of molded products using internal mold
release agents

    公开(公告)号:US4868224A

    公开(公告)日:1989-09-19

    申请号:US260650

    申请日:1988-10-21

    IPC分类号: C08G18/50 C08G18/80 C08K5/098

    摘要: The present invention is directed to a process for producing a molded product comprising(A) reacting:(i) an organic polyisocyanate having an isocyanate group content of from 5 to 45% by weight, preferably from 15 to 35% by weight, and most preferably from 20 to 35% by weight, prepared by reacting:(a) an organic di- and/or polyisocyanate, and(b) an active hydrogen containing fatty acid ester prepared by reacting an alcohol or polyol with an aliphatic, saturated or unsaturated fatty acid, said ester being characterized in that at least one aliphatic acid which contains more than 8 carbon atoms is built into the molecule, said ester further characterized as having an acid number of from 0 to 100 and a hydroxyl number of from 0 to 150 with at least one of said numbers being greater than zero, said ester having an average molecular weight of from 500 to 5000,(ii) an isocyanate reactive component comprising:(a) from about 0.5 to about 10% by weight based on the weight of components (ii)(b) and (ii)(c), of a zinc carboxylate containing from 8 to 24 carbon atoms per carboxylate group,(b) from about 0.3 to 100% by weight, preferably from 0.5 to 95% by weight, more preferably from 5 to 45% by weight, and most preferably from 10 to 35% by weight, based on the weight of components (ii)(b) and (ii)(c), of a compatibilizer which compatibilizes said carboxylate in component (ii), and(c) 0 to about 99.5% by weight, preferably from 5 to 99.5% by weight, more preferably from 55 to 95% by weight, and most preferably from 65 to 90% by weight, based on the weight of components (ii)(b), and (ii)(c), of at least one active hydrogen containing compound other than said compatibilizer,at an isocyanate index of from about 90 to about 400 and preferably from about 95 to about 115, in a closed mold,(B) allowing the components to react, and(C) removing the product from the mold.

    High performance RIM elastomers and a process for their production
    6.
    发明授权
    High performance RIM elastomers and a process for their production 失效
    高性能RIM弹性体及其生产工艺

    公开(公告)号:US06765080B2

    公开(公告)日:2004-07-20

    申请号:US10165297

    申请日:2002-06-06

    IPC分类号: C08G1878

    摘要: This invention relates to high performance RIM (reaction injection molded) poly(urethane)urea elastomers, and to a process for their production. These elastomers comprise the reaction product of an allophanate-modified diphenylmethane diisocyanate prepolymer having an NCO group content of about 5 to about 30%, with an isocyanate-reactive component comprising a high molecular weight amine-terminated polyether polyol, an aromatic diamine chain extender, and, optionally, a chain extender or crosslinker selected from the group consisting of aliphatic amine terminated polyether polyols and aliphatic hydroxyl terminated polyether polyols, optionally, in the presence of an internal mold release agent, a surfactant and a filler.

    摘要翻译: 本发明涉及高性能RIM(反应注射成型)聚(氨基甲酸酯)脲弹性体,以及其制备方法。 这些弹性体包含NCO基团含量为约5至约30%的脲基甲酸酯改性的二苯基甲烷二异氰酸酯预聚物与包含高分子量胺封端的聚醚多元醇的异氰酸酯反应性组分,芳族二胺扩链剂, 任选地,在内部脱模剂,表面活性剂和填料的存在下,任选地,选自脂族胺封端的聚醚多元醇和脂族羟基封端的聚醚多元醇的扩链剂或交联剂。

    Process for the preparation of filled urethane-based reinforced moldings
and the resultant products
    7.
    发明授权
    Process for the preparation of filled urethane-based reinforced moldings and the resultant products 失效
    用于制备填充的聚氨酯基增强模制品和所得产品的方法

    公开(公告)号:US5538786A

    公开(公告)日:1996-07-23

    申请号:US521672

    申请日:1995-08-31

    IPC分类号: B29C67/24 B32B5/20

    摘要: This invention relates to a reaction injection molding process for preparing a molded product by reaction of a mixture of(a) an organic polyisocyanate;(b) one or more compounds containing at least two isocyanate-reactive groups;(c) about 2 to about 20% by weight, based on the weight of the molded product, of rigid fibers having a diameter of from about 5 to about 10 micrometers and a length ranging from the diameter of the fiber up to about 2 millimeters, preferably in admixture with component (b);and, optionally,(d) an inert gas dissolved in at least one of components (a) or (b) in an amount sufficient to produce a molded product having a density of at least 0.80 g/cm.sup.3 ; and(e) up to 15% by weight, based upon the weight of the molded product, of a filler other than rigid fibers (c).

    摘要翻译: 本发明涉及通过(a)有机多异氰酸酯的混合物反应制备模塑产品的反应注射成型方法; (b)一种或多种含有至少两个异氰酸酯反应性基团的化合物; (c)约2至约20重量%,基于成型产品的重量,直径为约5至约10微米的刚性纤维和从纤维直径至约2毫米的长度 ,优选与组分(b)混合; 和任选地,(d)溶解在组分(a)或(b)中的至少一种中的惰性气体,其量足以产生密度至少为0.80g / cm 3的模制产品; 和(e)基于成型产品的重量,高达15重量%的除刚性纤维(c)之外的填料。

    Polyisocyanate based upon 4,4'-and 2,4'-diphenyl-methane dllsocyanates
and use thereof in a rim process
    8.
    发明授权
    Polyisocyanate based upon 4,4'-and 2,4'-diphenyl-methane dllsocyanates and use thereof in a rim process 失效
    基于4,4'-和2,4'-二苯基 - 甲烷二氰酸酯的多异氰酸酯及其在边缘工艺中的用途

    公开(公告)号:US5585452A

    公开(公告)日:1996-12-17

    申请号:US469963

    申请日:1995-06-06

    摘要: A novel polyisocyanate which is liquid and room temperature stable and has an isocyanate group content of from 10 to 30% by weight is prepared by reacting:a) an isocyanate mixture of 4,4'-diphenylmethane diisocyanate, 2,4'-diphenylmethane diisocyanate, and an amount of an isocyanate based upon diphenylmethane diisocyanate having an isocyanate functionality of more than 2, such that the total isocyanate mixture a) has an average isocyanate functionality of from 2.02 to 2.50, andb) one or more polyols selected from the group consisting of1) diols having molecular weights of from 1000 to 5000,2) triols having molecular weights of from 1000 to 6000, and3) mixtures thereof.When used in a RIM process, parts are produced which have excellent low temperature impact properties.

    摘要翻译: 液体和室温稳定并且异氰酸酯基含量为10至30重量%的新型多异氰酸酯通过以下步骤制备:a)4,4'-二苯基甲烷二异氰酸酯,2,4'-二苯基甲烷二异氰酸酯的异氰酸酯混合物 ,以及一定量的异氰酸酯基于二异氰酸酯官能度大于2的二苯基甲烷二异氰酸酯,使得总异氰酸酯混合物a)具有2.02至2.50的平均异氰酸酯官能度,和b)一种或多种选自 由1)分子量为1000至5000的二醇,2)分子量为1000至6000的三醇和3)其混合物。 当在RIM工艺中使用时,生产具有优异的低温冲击性能的部件。

    Process for the preparation of filled urethane-based reinforced moldings
    9.
    发明授权
    Process for the preparation of filled urethane-based reinforced moldings 失效
    填充的聚氨酯基增强模制品的制备方法

    公开(公告)号:US5468432A

    公开(公告)日:1995-11-21

    申请号:US416103

    申请日:1995-04-04

    IPC分类号: B29C67/24 B29C45/00

    摘要: This invention relates to a reaction injection molding process for preparing a molded product by reaction of a mixture of(a) an organic polyisocyanate;(b) one or more compounds containing at least two isocyanate-reactive groups;(c) about 2 to about 20% by weight, based on the weight of the molded product, of rigid fibers having a diameter of from about 5 to about 10 micrometers and a length ranging from the diameter of the fiber up to about 2 millimeters, preferably in admixture with component (b);and, optionally,(d) an inert gas dissolved in at least one of components (a) or (b) in an amount sufficient to produce a molded product having a density of at least 0.80 g/cm.sup.3 ; and(e) up to 15% by weight, based upon the weight of the molded product, of a filler other than rigid fibers (c).

    摘要翻译: 本发明涉及通过(a)有机多异氰酸酯的混合物反应制备模塑产品的反应注射成型方法; (b)一种或多种含有至少两个异氰酸酯反应性基团的化合物; (c)约2至约20重量%,基于成型产品的重量,直径为约5至约10微米的刚性纤维和从纤维直径至约2毫米的长度 ,优选与组分(b)混合; 和任选地,(d)溶解在组分(a)或(b)中的至少一种中的惰性气体,其量足以产生密度至少为0.80g / cm 3的模制产品; 和(e)基于成型产品的重量,高达15重量%的除刚性纤维(c)之外的填料。