公开(公告)号：US20220073738A1

公开(公告)日：2022-03-10

申请号：US17419256

申请日：2020-02-12

Applicant: SIKA TECHNOLOGY AG

Inventor： Klaas MENNECKE ,  David HOFSTETTER ,  Fabien CHOFFAT

IPC: C08L71/02 ,  C08K3/013 ,  C08K5/00 ,  C08K5/549

Abstract: A moisture-curable composition, including between 0.6 and 15.0 wt.-% of at least one organic polymer containing reactive silane groups, between 70 and 95 wt.-% of at least one filler, at least one dispersion additive, optionally at least one catalyst for the curing of silane-functional polymers and up to 10 wt.-% of at least one plasticizer, characterized in that said filler is selected from the list consisting of aluminium oxide, aluminium hydroxide, boron nitride, aluminium nitride, zinc oxide, silver, copper, aluminium, chalk, aluminosilicate, graphite, and any mixture of these fillers; with the proviso that the amount of chalk in the filler does not exceed 25 wt.-% of the total amount of filler. The moisture-curable composition shows excellent thermal conductivity and is particularly suitable as adhesive, gap filler, or sealant suitable for e-coat applications and battery bonding especially in electric automobile assembly.

公开(公告)号：US20150337181A1

公开(公告)日：2015-11-26

申请号：US14440300

申请日：2013-11-07

Applicant: SIKA TECHNOLOGY AG

Inventor： Christian KRÜGER ,  Jan Olaf SCHULENBURG ,  David HOFSTETTER ,  Tina VOCI

IPC: C09J163/00

CPC classification number: C08G18/10 ,  C08G18/12 ,  C08G18/755 ,  C08G18/831 ,  C08G18/84 ,  C08G59/066 ,  C08G59/28 ,  C08G59/3227 ,  C08L21/00 ,  C08L63/00 ,  C08L75/04 ,  C08L75/06 ,  C08L75/08 ,  C09J163/00 ,  C09J163/04 ,  C09J175/04 ,  C09J175/06 ,  C09J175/08 ,  C08G18/2845 ,  C08G18/58

Abstract: A method is described for producing liquid rubber containing an impact-resistance modifier terminated by epoxy groups, the method including the reaction of an isocyanate-terminated prepolymer with an epoxy resin, which includes an epoxy compound including a primary or secondary hydroxyl group, in the presence of a compound selected from anhydrides, ketones and aldehydes as glycol scavengers, wherein the isocyanate-terminated prepolymer, the epoxy resin and the glycol scavenger are mixed with one another, or the epoxy resin is reacted with the glycol scavenger, before they are mixed with the isocyanate-terminated prepolymer. Gelling in the reaction mixture is avoided by the method. The resulting products are suitable for improving the impact resistance of epoxy resin compositions, particularly one-component or two-component epoxy resin adhesives.

Abstract translation: 描述了一种用于生产含有由环氧基封端的耐冲击改性剂的液体橡胶的方法，该方法包括异氰酸酯封端的预聚物与环氧树脂的反应，该环氧树脂包括含有伯或仲羟基的环氧化合物， 将选自酸酐，酮和醛的化合物作为二醇清除剂的存在，其中异氰酸酯封端的预聚物，环氧树脂和二醇清除剂彼此混合，或环氧树脂在二元醇清除剂混合之前与二醇清除剂反应 与异氰酸酯封端的预聚物。 通过该方法可以避免反应混合物中的凝胶化。 所得产品适用于提高环氧树脂组合物，特别是单组分或双组分环氧树脂粘合剂的耐冲击性。

公开(公告)号：US20240417534A1

公开(公告)日：2024-12-19

申请号：US18715938

申请日：2022-12-16

Applicant: SIKA TECHNOLOGY AG

Inventor： David HOFSTETTER ,  Andrea BATTISTI ,  Marcel OERTLI ,  Christian EYHOLZER ,  Fabien CHOFFAT

IPC: C08K3/22 ,  C08K5/521 ,  H01M10/653 ,  H05K7/20

Abstract: A two-component moisture-curable composition, especially suitable as thermally conductive gap filler, in particular with flame-retardant properties. It is thus highly suitable for use in e-mobility battery bonding or electronic equipment.

公开(公告)号：US20160272750A1

公开(公告)日：2016-09-22

申请号：US14442221

申请日：2013-11-12

Applicant: Sika Technology AG

Inventor： Tina VOCI ,  David HOFSTETTER ,  Christian KRÜGER ,  Jan Olaf SCHULENBURG

IPC: C08G18/40 ,  C09J11/08 ,  C09J9/00 ,  C09J163/00 ,  C08G18/75

CPC classification number: C08G18/4063 ,  C08G18/12 ,  C08G18/4854 ,  C08G18/698 ,  C08G18/755 ,  C09J9/00 ,  C09J11/08 ,  C09J163/00 ,  C09J175/04 ,  C08G18/2845

Abstract: An epoxy group-terminated impact modifier is described, comprising the reaction product of a) two or more polyols, b) one or more polyisocyanates, and c) at least one epoxy resin comprising a primary or secondary hydroxy group-containing epoxy compound, wherein the polyols comprise a1) at least one polyether polyol and a2) at least one OH-terminated rubber, wherein the weight ratio of polyether polyol to OH-terminated rubber is in the range from 7:3 to 2:8; an isocyanate-terminated prepolymer as possible intermediate product is described; furthermore a method for producing same is described. The products obtained are suitable for improving the impact resistance of epoxy resin compositions, in particular of 1K or 2K epoxy resin adhesives.

Abstract translation: 描述了环氧基封端的抗冲击改性剂，其包含a）两种或多种多元醇的反应产物，b）一种或多种多异氰酸酯，和c）至少一种包含伯或仲羟基的环氧化合物的环氧树脂，其中 多元醇包括a1）至少一种聚醚多元醇和a2）至少一种OH-封端的橡胶，其中聚醚多元醇与OH-末端橡胶的重量比在7:3至2:8的范围内; 描述作为可能的中间产物的异氰酸酯封端的预聚物; 此外，还描述了制造方法。 所得产品适用于提高环氧树脂组合物，特别是1K或2K环氧树脂粘合剂的耐冲击性。