Thermosetting polyurethane structural adhesive compositions and
processes for producing the same
    1.
    发明授权
    Thermosetting polyurethane structural adhesive compositions and processes for producing the same 失效
    热固性聚氨酯结构胶粘剂组合物及其制备方法

    公开(公告)号:US5231147A

    公开(公告)日:1993-07-27

    申请号:US842756

    申请日:1992-02-28

    摘要: The present invention relates to thermosetting polyurethane structural adhesive composites and compositions and processes for producing the same comprising dispersing an amine-terminated solid polyamide resin into a polyurethane base resin to form a nonactivated adhesive composite, and activating the same by heating to form an adhesive composition. Another aspect of the invention relates to dispersing an amine-terminated solid polyamide resin and a water generating compound into the polyurethane base resin and heat-activating the same to form an adhesive composition. The invention also relates to polyurethane base resins suitable for use in the processes of the invention, which may also be moisture cured to form a reactive adhesive composition.

    摘要翻译: 本发明涉及热固性聚氨酯结构粘合剂复合材料及其制备方法,包括将胺封端的固体聚酰胺树脂分散在聚氨酯基础树脂中以形成非活性粘合剂复合材料,并通过加热活化以形成粘合剂组合物 。 本发明的另一方面涉及将胺封端的固体聚酰胺树脂和产水化合物分散到聚氨酯基础树脂中并对其进行热活化以形成粘合剂组合物。 本发明还涉及适用于本发明方法的聚氨酯基础树脂,其也可以湿固化以形成反应性粘合剂组合物。

    High performance polyurethane base resins
    2.
    发明授权
    High performance polyurethane base resins 失效
    高性能聚氨酯基树脂

    公开(公告)号:US5336733A

    公开(公告)日:1994-08-09

    申请号:US111431

    申请日:1993-08-25

    摘要: Disclosed are polyurethane base resins, and polyurethane composites and adhesive compositions formed using the base resins. The polyurethane base resins are formed by reacting a polycarbodiimide-modified 4, 4'-diphenylmethane diisocyanate with a mixture of the following polyols: (a) a hydroxyl-terminated, linear, saturated liquid copolyester diol having a glass transition temperature of at most -10.degree. C. and at least -60.degree. C.; and (b) a homopolyester polyol that is a ring-opened polymer of a cyclic ester. The polyurethane composites include typical active hydrogen-containing species that will react with isocyanates and promote curing, in addition to the polyurethane base resin. The polyurethane adhesive compositions, which are thermosetting, include the cured polyurethane base resin, cured by exposure to moisture or any other applicable curing mechanism. The adhesive compositions have improved performance (e.g., tensile strength and adhesion) at elevated service temperatures, and are suitable for high performance automotive structural bonding applications.

    摘要翻译: 公开了聚氨酯基树脂,以及使用基础树脂形成的聚氨酯复合材料和粘合剂组合物。 聚氨酯基树脂通过使聚碳二亚胺改性的4,4'-二苯基甲烷二异氰酸酯与下列多元醇的混合物反应而形成:(a)玻璃化转变温度至多为 - 的羟基封端的直链饱和液体共聚酯二醇, 10℃,至少-60℃。 和(b)作为环状酯的开环聚合物的均聚酯多元醇。 除了聚氨酯基础树脂之外,聚氨酯复合材料包括将与异氰酸酯反应并促进固化的典型的含活性氢的物质。 热固性聚氨酯粘合剂组合物包括固化的聚氨酯基础树脂,通过暴露于湿气或任何其它适用的固化机理而固化。 粘合剂组合物在升高的使用温度下具有改进的性能(例如拉伸强度和粘合性),并且适用于高性能汽车结构粘结应用。

    Epoxy, polysulfide and cyanoacrylate composites utilizing activatable
amino-polyamide curatives
    6.
    发明授权
    Epoxy, polysulfide and cyanoacrylate composites utilizing activatable amino-polyamide curatives 失效
    环氧,多硫化物和氰基丙烯酸酯复合材料,使用可活化的氨基 - 聚酰胺固化剂

    公开(公告)号:US6111030A

    公开(公告)日:2000-08-29

    申请号:US184526

    申请日:1994-01-21

    摘要: The present invention relates to cured compositions useful as adhesives and sealants formed by dispersing an amine-terminated polyamide curative into a base to form a composite and activating the composite forming the cured composition. Bases described include epoxies, polysulfides and cyanoacrylates. Curing mechanisms include heat and pressure activation. The amine-terminated polyamide curative has a ratio of equivalents of amine to acid groups of from about 1.05:1.00 equivalents NH.sub.X :COOH to no greater than about 1.95:1.00 when x is 1 or 2.

    摘要翻译: 本发明涉及用作粘合剂和密封剂的固化组合物,其通过将胺封端的聚酰胺固化剂分散到基底中以形成复合材料并活化形成固化的组合物的复合物。 所描述的碱包括环氧化物,多硫化物和氰基丙烯酸酯。 固化机理包括热和压力的激活。 当x为1或2时,胺封端的聚酰胺固化剂的胺与酸基的当量比为约1.05:1.00当量NHX:COOH至不大于​​约1.95:1.00。

    Methods for producing submicron polytetrafluoroethylene powder and products thereof
    10.
    发明授权
    Methods for producing submicron polytetrafluoroethylene powder and products thereof 有权
    亚微米聚四氟乙烯粉末的制造方法及其制造方法

    公开(公告)号:US07482393B2

    公开(公告)日:2009-01-27

    申请号:US11024582

    申请日:2004-12-29

    IPC分类号: C08F2/46 C08J3/28

    摘要: A method for producing submicron polytetrafluoroethylene (“PTFE”) powder in a free-flowing, readily dispersible form. The irradiated PTFE starting material is placed in a desired solvent and undergoes grinding until the PTFE particles reach submicron size. The submicron particles are subsequently recovered from the solvent and dried to form a powder that may have particles less than 1.00 μm in size. The dry PTFE powder may then be readily dispersed to submicron size into a desired application system. The submicron PTFE powder of this method is free-flowing, readily dispersible in various application systems, tends not to “dust” or self-agglomerate. Improved aqueous and organic dispersions of submicron PTFE particles may also be formed that display increased stability and require much less agitation than other processes of forming such dispersions. Such improved PTFE dispersions may be formed with or without the addition of surfactants, wetting agents, rheology modifiers, pH-adjusting agents, and the like.

    摘要翻译: 以自由流动,容易分散的形式生产亚微米聚四氟乙烯(“PTFE”)粉末的方法。 将被照射的PTFE原料置于所需的溶剂中并进行研磨直到PTFE颗粒达到亚微米尺寸。 亚微米颗粒随后从溶剂中回收并干燥以形成可以具有小于1.00μm的颗粒尺寸的粉末。 然后可以将干燥的PTFE粉末容易地分散到亚微米尺寸到所需的应用系统。 这种方法的亚微米PTFE粉末是自由流动的,易于分散在各种应用系统中,倾向于不“粉尘”或自聚集。 还可以形成改进的亚微米PTFE颗粒的水性和有机分散体,其显示出增加的稳定性并且需要比其它形成这种分散体的方法少得多的搅拌。 这种改进的PTFE分散体可以在添加或不添加表面活性剂,润湿剂,流变改性剂,pH调节剂等的情况下形成。