Process for molding foamed plastics from reaction mixtures involving
closed mold filling with the avoidance of gas bubble entrainment
    11.
    发明授权
    Process for molding foamed plastics from reaction mixtures involving closed mold filling with the avoidance of gas bubble entrainment 失效
    用于通过闭合模具填充的反应混合物模制泡沫塑料的方法,以避免气泡夹带

    公开(公告)号:US3991147A

    公开(公告)日:1976-11-09

    申请号:US506144

    申请日:1974-09-16

    摘要: A process for molding foam products substantially free from flaws caused by air bubbles in the foamable reaction mixture wherein a foamable reaction mixture having a viscosity .eta. in cP between 100 cP and 2500 cP is introduced into a mold cavity through an opening in the mold wall and against the wall of the cavity opposite the opening of a mold in which the thickness of the cavity and the thickness s of the resulting molded product adjacent to the opening at the time the mixture is introduced into the cavity is maintained at 0.5 mm to 15 mm under conditions whereby the radial distribution rate w.sub.radial in m/sec., .eta. in cP and s combine to satisfy the relation ##EQU1##

    摘要翻译: 一种用于模制泡沫产品的方法,其基本上没有由可发泡反应混合物中的气泡引起的瑕疵,其中具有cP值在100cP和2500cP之间的具有cP粘度的可发泡反应混合物通过模具壁中的开口引入模腔中, 抵靠与模具开口相对的腔的壁,其中空腔的厚度和在混合物被引入空腔时与开口相邻的所得模制产品的厚度保持在0.5mm至15mm 在cP和s中的等于或等于m /秒的径向分布速率组合以满足关系式(m / sec)的条件下。 s(mm)=

    Apparatus for producing molded foam articles without defects
    12.
    发明授权
    Apparatus for producing molded foam articles without defects 失效
    用于生产没有缺陷的模制泡沫制品的装置

    公开(公告)号:US3982870A

    公开(公告)日:1976-09-28

    申请号:US558516

    申请日:1975-03-14

    IPC分类号: B01F5/00 B29C33/00 B29D27/00

    CPC分类号: B29C33/0072 Y10S264/83

    摘要: Apparatus to practice the method of forming foam molded articles without the defects caused by incompletely mixed reactants in the mold cavity is provided. A mixing chamber bounded by a sidewall portion having injection apertures, an outlet aperture which communicates with the mold cavity and a first ejector piston displaceable within the bore of the mixing chamber is provided. Opposite said outlet aperture is a second ejector piston which is retracted at the start of the mold filling operation to provide a receiving chamber in the mold wall. As the mold filling proceeds, this piston is displaced towards the mold cavity until its end surface forms a planar surface with the mold wall. Optionally, this piston may be displaced into the mold cavity to eject the molded article.

    摘要翻译: 提供了在模具腔中不发生由不完全混合的反应物引起的缺陷来实施形成泡沫模塑制品的方法的装置。 提供了由具有注射孔的侧壁部分限定的混合室,与模腔连通的出口孔和可在混合室的孔内移位的第一顶出活塞。 相对的,所述出口孔是在模具填充操作开始时缩回的第二顶出活塞,以在模具壁中提供接收室。 当模具填充进行时,该活塞朝向模腔移动,直到其端面与模具壁形成平坦的表面。 可选地,该活塞可以移动到模腔中以喷射模制品。

    Storable polyol mixtures containing mold release agents
    14.
    发明授权
    Storable polyol mixtures containing mold release agents 失效
    含有脱模剂的可储存的多元醇混合物

    公开(公告)号:US5344853A

    公开(公告)日:1994-09-06

    申请号:US90390

    申请日:1993-07-12

    摘要: Polyol mixtures containing a mixture of internal mold release agents which are storage stable are made up of (a) from about 55 to about 95% by weight of a polyol mixture of (1) 30-70% by weight of at least one polyol with an OH value of more than 700 and (2) from about 30 to about 70% by weight of at least one polyol with an OH value of 700 or less than 700 and (b) from about 5 to about 45% by weight of a mixture of internal mold release agents made up of (1) from about 60 to about 95% by weight of at least one salt-like release agent and (2) from about 5 to about 40% by weight of at least one non-salt-like release agent containing an amide NH function or a urethane NH function. Known auxiliaries and additives may optionally be included. These polyol mixtures are useful in the production of rigid, semirigid and flexible polyurethane materials, particularly molded polyurethanes.

    摘要翻译: 含有保存稳定的内部脱模剂的混合物的多元醇混合物由以下组成:(a)约55至约95重量%的多元醇混合物(1)30-70重量%的至少一种多元醇与 OH值大于700,(2)约30至约70重量%的至少一种OH值为700或小于700的多元醇和(b)约5至约45重量%的 内部脱模剂的混合物由(1)约60至约95重量%的至少一种盐状释放剂和(2)约5至约40重量%的至少一种非盐 含有酰胺NH官能团或氨基甲酸酯NH官能团的脱模剂。 可以任选地包括已知的助剂和添加剂。 这些多元醇混合物可用于生产刚性,半刚性和柔性聚氨酯材料,特别是模塑聚氨酯。

    Method of making a tire reinforced with sheath cord threads
    15.
    发明授权
    Method of making a tire reinforced with sheath cord threads 失效
    用护套绳螺纹加固轮胎的方法

    公开(公告)号:US4917744A

    公开(公告)日:1990-04-17

    申请号:US213666

    申请日:1988-06-30

    摘要: The present invention is directed to a tire comprising a three-dimensional wound reinforcement formed from a continuous sheathed filament running diagonally over the region upon which the tread is located and alternating from one tire foot to the other, said filament (i) crossing back and forth over said region, (ii) running into the tire foot tangentially, (iii) running for a relatively long distance in the tire foot, and (iv) crossing over itself over the entire tire shape, said reinforcement resisting forces radially and circumferentially, and an elastomeric material surrounding said reinforcement and to a method of manufacture thereof.

    摘要翻译: 本发明涉及一种轮胎,其包括三维卷绕加强筋,该三维卷绕加强筋是由沿着胎面位于其上的区域对角地延伸的连续护套长丝形成的,并且一个轮胎脚彼此交替,所述细丝(i) 在所述区域之后,(ii)切向地进入轮胎脚,(iii)在轮胎脚中延伸相对较长的距离,以及(iv)在整个轮胎形状上穿过自身,所述加强件径向和周向地抵抗力, 以及围绕所述加强件的弹性体材料及其制造方法。

    Process for providing mixed foamable reactants to a mold
    17.
    发明授权
    Process for providing mixed foamable reactants to a mold 失效
    将混合的可发泡反应物提供到模具的方法

    公开(公告)号:US4129636A

    公开(公告)日:1978-12-12

    申请号:US742937

    申请日:1976-11-18

    IPC分类号: B29B7/74 B29C33/00 B29D27/00

    摘要: A process is provided for introducing mixed foamable reactants to a mold. The process involves introducing the reactants into a mixing chamber through injection apertures in its side wall portion. The mixing chamber has an outlet aperture communicating with the cavity of the mold. Prior to introducing the reactants into the mixing chamber, a displacement piston having a smaller cross-section than the mixing chamber is inserted into the outlet aperture of the mixing chamber so that the injection apertures communicate with the mold cavity by means of a generally annular passage.

    摘要翻译: 提供了将混合的可发泡反应物引入模具的方法。 该方法包括通过其侧壁部分中的注入孔将反应物引入混合室。 混合室具有与模具的腔连通的出口孔。 在将反应物引入混合室之前,将具有比混合室更小的横截面的置换活塞插入到混合室的出口孔中,使得注射孔通过大致环形通道与模腔连通 。

    Process for the production of molded polyurethane parts
    20.
    发明授权
    Process for the production of molded polyurethane parts 失效
    生产模制聚氨酯零件的工艺

    公开(公告)号:US4772639A

    公开(公告)日:1988-09-20

    申请号:US142759

    申请日:1988-01-11

    摘要: The present invention is directed to a process for the production of light-resistant, optionally foamed elastomeric molded polyurethanes by reacting(a) organic polyisocyanates which are either mixtures of isophorone diisocyanate with polyisocyanates containing isocyanurate groups and based on 1,6-diisocyanatohexane or mixtures of IPDI with polyisocyanates containing isocyanurate groups and based on 1,6-diisocyanato-hexane and IPDI with organic compounds containing isocyanate-reactive groups in the presence of catalysts, wherein the components are reacted together inside closed molds in an isocyanate index of about 70 to 130.The present invention is additionally directed to the elastomeric polyurethanes prepared by this process.

    摘要翻译: 本发明涉及通过使(a)有机多异氰酸酯与异佛尔酮二异氰酸酯的混合物与含有异氰脲酸酯基的多异氰酸酯和基于1,6-二异氰酸根合己烷或其混合物的混合物反应生产耐光,任选发泡的弹性体模制聚氨酯的方法 的IPDI与含有异氰脲酸酯基团的多异氰酸酯,并且在催化剂存在下,基于1,6-二异氰酸根合 - 己烷和含有异氰酸酯反应性基团的有机化合物的IPDI,其中组分在封闭模具内以约70至异氰酸酯指数反应 本发明另外涉及通过该方法制备的弹性体聚氨酯。