Thermoplastic adhesives
    91.
    发明授权
    Thermoplastic adhesives 失效
    热塑性胶粘剂

    公开(公告)号:US4128525A

    公开(公告)日:1978-12-05

    申请号:US659873

    申请日:1976-02-20

    摘要: Novel thermoplastic adhesive components, prepared from inexpensive and readily available synthetic materials, having melting points between about 20.degree. C. to about 180.degree. C. and broad ranges of hardness, flexibility and compatibility are disclosed. The novel thermoplastic compounds useful in adhesive formulations are comprised of a resinous polyamide reaction product of a polyoxypropylene polyamine having an average molecular weight of from about 190 to about 3,000 and being selected from diamines, triamines, or mixtures thereof, piperazine and an aliphatic or aromatic dicarboxylic acid, ester or anhydride having from about 4 to about 20 carbon atoms per molecule. The resinous polyamide reaction product is prepared by mixing and reacting the polyoxypropylene polyamine, piperazine, and dicarboxylic acid materials in a total amine:acid molar ratio within the range of from about 0.25:1.0 to about 4.0:1.0 at a temperature of from about 175.degree. C. to about 270.degree. C. The inventive thermoplastic polyamides can be formulated with compatible plasticizing agents to prepare a useful adhesive to which can also be added other components, such as a minor amount of a polyepoxide resin having an epoxide equivalent weight of about 150 to about 600, fillers and the like to produce thermoplastic adhesive formulations having desired hardness, flexibility and compatibility that are capable of bonding together a variety of substrates.

    摘要翻译: 公开了由廉价且容易获得的合成材料制备的具有约20℃至约180℃的熔点和宽范围的硬度,柔性和相容性的新型热塑性粘合剂组分。 用于粘合剂制剂的新型热塑性化合物由平均分子量为约190至约3,000的聚氧丙烯多胺的树脂聚酰胺反应产物组成,并且选自二胺,三胺或其混合物,哌嗪和脂族或芳族 每个分子具有约4-约20个碳原子的二羧酸,酯或酸酐。 树脂聚酰胺反应产物是通过将聚氧丙烯多胺,哌嗪和二羧酸材料在总的胺:酸摩尔比在约0.25:1.0至约4.0:1.0的范围内,在约175℃ 本发明的热塑性聚酰胺可以用相容的增塑剂配制以制备可用的粘合剂,也可以向其中加入其它成分,例如少量的环氧当量重量约为 150至约600,填料等,以生产具有能够将各种基材粘合在一起的所需硬度,柔性和相容性的热塑性粘合剂制剂。

    TWO-PART EPOXY-BASED STRUCTURAL ADHESIVE COMPOSITION

    公开(公告)号:US20230332025A1

    公开(公告)日:2023-10-19

    申请号:US18211399

    申请日:2023-06-19

    摘要: The present invention relates to a two-part epoxy-based structural adhesive composition, comprising a first part and a second part, the first part comprising: i) a first aromatic difunctional epoxy resin having an epoxide equivalent weight (EEW) of less than 400 g/eq, ii) a second aromatic difunctional epoxy resin having an epoxide equivalent weight of from 400 g/eq to 3000 g/eq, and iii) a shell-core toughening agent; the second part comprising: I) a non-aromatic polyetheramide amine and II) an alicyclic amine. Moreover, the present invention also relates to a method for bonding substrates using the adhesive composition and an article bonded with the cured product of the adhesive composition and use of the composition in assembly of articles.

    Thermoplastic Composition Comprising a Polyamide and a Polysiloxane

    公开(公告)号:US20170267862A1

    公开(公告)日:2017-09-21

    申请号:US15613782

    申请日:2017-06-05

    IPC分类号: C08L83/06 C09J183/06

    摘要: A thermoplastic composition which comprises at least one polyamide, which preferably has a melting point of less than 185° C., and at least one liquid polysiloxane compound which preferably has a viscosity of 750 to 100,000 mPas at 25° C. and is OH terminated, wherein the thermoplastic composition is obtainable by a process comprising the steps: 1a) heating the at least one polyamide to a temperature above the melting point of the at least one polyamide and preferably below 185° C.; 2a) adding under stirring the at least one liquid polysiloxane compound to the heated compound(s) of step 1a), wherein the temperature is kept above the melting point of the at least one polyamide and preferably below 185° C.; and 3a) mixing the obtained mixture of step 2a) preferably at 80° to 180° C., more preferably 110 to 140° C. Use of this the thermoplastic composition according to the present invention in sealants, adhesives, or as rheological modifier or surface modifier. Furthermore, to a hot melt adhesive comprising the thermoplastic composition according to the present invention. And use of this hot melt in vehicle parts, constructions, windows, glazing, sanitary applications, fittings, roofing, plumbing, appliance application and bonding of panes.