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1.发明申请公开(公告)号：US20200347279A1
公开(公告)日：2020-11-05
申请号：US16936628
申请日：2020-07-23
IPC分类号： C09J163/04 , C08G59/40 , C08G18/10 , C09J163/00 , C08G65/333 , C08G18/80 , A61N1/05 , C08G59/68 , A61B5/04 , C08G18/12 , C08G18/48 , A61B5/00 , C08G18/69 , C08G18/67 , C08L75/08 , C08G18/73 , A61B5/0492 , C08G18/24 , C08G18/32 , C08G18/62 , C08G18/75
摘要： Epoxy adhesives include a latent curing agent, a reactive toughener having capped isocyanate groups, and certain urea compounds. The toughener is made by chain extending and capping a mixture of isocyanate-terminated prepolymers. The prepolymers include an isocyanate-terminated polyether and an isocyanate-terminated diene polymer. The adhesives have excellent wash-off resistance and excellent ability to adhere to oily substrates.
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公开(公告)号：US20210130663A1
公开(公告)日：2021-05-06
申请号：US16640778
申请日：2018-07-20
IPC分类号： C09J163/00
摘要： One-component epoxy adhesives containing a phosphorus-modified epoxy resin, a toughener and an epoxy resin that is neither rubber-modified nor phosphorus-modified. These adhesives are structural adhesives useful in automotive applications. They exhibit particularly good corrosion resistance.
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3.发明申请公开(公告)号：US20200339847A1
公开(公告)日：2020-10-29
申请号：US16636430
申请日：2018-10-01
IPC分类号： C09J175/08 , C08G18/76 , C08G18/48 , C08G18/10 , C08K13/02
摘要： Disclosed is a composition including one or more isocyanate functional prepolymers; one or more catalysts for the reaction of isocyanate moieties and active hydrogen containing moieties; one or more mercapto silanes; one or more amino silanes, isocyanato silanes or a mixture thereof; one or more reinforcing fillers comprising one or more high surface area carbon blacks; one or more untreated calcium carbonates; one or more polyisocyanates having an isocyanate functionality of about 2 or greater; and one or more linear plasticizers. Preferably, the isocyanate functional prepolymer is prepared in the presence of at least a portion of the linear plasticizer. Preferably, the isocyanate functional polymer is prepared in the presence of a dialkyl malonate. The composition may be one-part adhesive composition. Also disclosed are methods of applying the compositions to substrates. The composition bonds primerlessly to hard to bond to coatings, such as coatings prepared from compositions including a silanated component, such as a silanated acrylopolyols, or having silica clusters.
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公开(公告)号：US20200231849A1
公开(公告)日：2020-07-23
申请号：US16649361
申请日：2018-10-02
发明人： Tyler Auvil , Gary L. Jialanella , Eric E. Cole , Felix Koch , Andreas Lutz , Daniel Schneider
IPC分类号： C09J163/00 , C08G59/40 , C09J5/06 , C09J11/04
摘要： An epoxy-based crash durable adhesive composition including: (I) a liquid resin system comprising: (a) at least one epoxy resin; and (b) at least one toughener; wherein the viscosity of the above liquid resin system is less than about 800 Pa s at a temperature of 15° C.; and wherein the viscosity of the above liquid resin system is greater than about 5 Pa-s at a temperature of 60° C.; (II) a solid material comprising: (c) at least one hydrophobic fumed silica, wherein the fumed silica is present in the adhesive composition at a concentration of greater than 5 weight percent; and (III) a curative material comprising: (d) at least one latent heat-activated curing agent; wherein the rheology of the epoxy-based crash durable adhesive composition is such that the adhesive composition is pumpable at a temperature of 15° C. or greater; and wherein the epoxy-based crash durable adhesive composition exhibits an increase in wash-off resistance; a process for making the above adhesive composition; and a process for bonding metal substrates together with the above adhesive composition
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