公开(公告)号：US20230094797A1

公开(公告)日：2023-03-30

申请号：US17792587

申请日：2021-02-12

Applicant: SIKA TECHNOLOGY AG

Inventor： Cendrine RIBOT ,  Jeannette CLIFFORD ,  Leslie WOLSCHLEGER

IPC: C08J9/00 ,  C08J9/10

Abstract: A thermally expandable composition including at least one polymer, at least one free radical initiator, at least one chemical blowing agent, and silane groups; and also a baffle and/or a reinforcement element for hollow structures including the thermally expandable composition, to a process for manufacturing the baffle and/or reinforcement element, to use of the baffle and/or reinforcement element for sealing, baffling, or reinforcing of a cavity or a hollow structure, and to a method for sealing, baffling and/or reinforcing a cavity or hollow structure.

公开(公告)号：US20210292470A1

公开(公告)日：2021-09-23

申请号：US17208732

申请日：2021-03-22

Applicant: SIKA TECHNOLOGY AG

Inventor： Nicolae BORDEANU ,  Leslie WOLSCHLEGER

IPC: C08G59/24 ,  C08G59/40 ,  C08J9/10

Abstract: A one-component thermosetting epoxy resin composition, including a) at least one epoxy resin A having on average more than one epoxide group per molecule; b) at least one latent hardener for epoxy resins; c) at least one physical or chemical blowing agent BA; d) 3-15 wt.-% of at least one carboxyl group containing acrylonitrile/butadiene rubber ABR1 with a Mooney Viscosity of 15-30 MU (Mooney units), based on the total amount of epoxy resin A; and e) 3-15 wt.-% of at least one carboxyl group containing acrylonitrile/butadiene rubber ABR2 with a Mooney Viscosity of 35-50 MU (Mooney units), based on the total amount of epoxy resin A. The ratio of ABR1 to ABR2 is from 0.5-2.0. The epoxy resin adhesive is notable for the improved storage stability.

公开(公告)号：US20210061981A1

公开(公告)日：2021-03-04

申请号：US16960120

申请日：2018-12-20

Applicant: SIKA TECHNOLOGY AG

Inventor： Karsten FRICK ,  Sascha PASULA ,  Alina KELLER ,  Leslie WOLSCHLEGER ,  Elizabeth FARHAT

IPC: C08L23/08 ,  C08J9/10 ,  C08J9/00

Abstract: A thermally expandable composition includes at least one polymer P cross-linkable by peroxide, and at least one acrylate, and at least one peroxide, azodicarbonamide and a zinc compound. The thermally expandable composition leads to low odor formation and low ammonia emission during and after the foaming process. The thermally expandable composition further shows excellent properties in terms of expansion stability.

公开(公告)号：US20190276624A1

公开(公告)日：2019-09-12

申请号：US16316017

申请日：2017-07-19

Applicant: SIKA TECHNOLOGY AG

Inventor： Geng LIN ,  Leslie WOLSCHLEGER ,  Nicolae BORDEANU

IPC: C08J9/00 ,  C08G59/24 ,  C08L63/00 ,  C08J9/10 ,  C08J9/08 ,  B29C44/02

Abstract: A thermally expandable composition, including at least one epoxy-functional polymer, at least one thermoplastic polymer, at least one chemical blowing agent, and at least one activator, wherein the epoxy-functional polymer is present in the composition before expansion with an amount of between 30 and 75 wt.-%, based on the total composition, and the epoxy-functional polymer includes at least 300 mmol epoxy groups per kg polymer, and wherein the chemical blowing agent is able to form at least one reaction product with at least two amino groups upon thermal decomposition, and the chemical blowing agent is in the composition before expansion with an amount of between 5 and 30 wt.-%, based on the total composition.

公开(公告)号：US20230080499A1

公开(公告)日：2023-03-16

申请号：US17798253

申请日：2021-02-03

Applicant: SIKA TECHNOLOGY AG

Inventor： Michael SPEIGHT ,  Leslie WOLSCHLEGER ,  Braden LANORE ,  Jena MABILIA

IPC: C08J9/00 ,  C08J9/10

Abstract: A product, especially a master-batch for producing thermally expandable compositions, is obtainable or obtained by reacting, preferably by extruding, a mixture including: (a) at least one polymer P, cross-linkable by peroxide, and (b) at least one coagent, especially an acrylate A, and (c) at least one peroxide PE, wherein the mixture is reacted such that the product has an average melt flow index (MFI) of between 0.1 and 8 g/10 min.

公开(公告)号：US20180355138A1

公开(公告)日：2018-12-13

申请号：US15781692

申请日：2016-12-15

Applicant: SIKA TECHNOLOGY AG

Inventor： Leslie WOLSCHLEGER ,  Artur MARFINATI ,  Geng LIN ,  Cendrine RIBOT ,  Dusko PARIPOVIC

IPC: C08J9/10 ,  C08L23/08 ,  C08J9/00 ,  C09D5/00 ,  C09D123/08 ,  B29C45/00 ,  B29C47/00 ,  B29C47/06

CPC classification number: C08J9/105 ,  B29C45/0001 ,  B29C47/0004 ,  B29C47/06 ,  B29K2023/083 ,  B29K2105/0005 ,  C08J9/0023 ,  C08J9/0028 ,  C08J9/0061 ,  C08J9/103 ,  C08J9/104 ,  C08J9/36 ,  C08J2201/026 ,  C08J2201/03 ,  C08J2203/04 ,  C08J2203/184 ,  C08J2323/08 ,  C08J2423/08 ,  C08K5/14 ,  C08K5/24 ,  C08K2003/265 ,  C08L23/0853 ,  C08L23/0884 ,  C08L2203/14 ,  C08L2205/025 ,  C08L2205/03 ,  C08L2312/00 ,  C09D5/00 ,  C09D123/0853 ,  C09J123/0853

Abstract: A thermally expandable composition, including at least one polymer, cross-linkable by peroxide, at least one peroxide, preferably at least one antioxidant, at least one chemical blowing agent, and at least one activator, wherein the activator includes at least one compound selected from formula (I), wherein radicals R1 and R4 represent hydrogen atoms or monovalent alkyl radicals with 1 to 10 carbon atoms which optionally include oxygen atoms; R2 and R3 represent hydrogen atoms or monovalent alkyl radicals with 1 to 10 carbon atoms which optionally include oxygen atoms, nitrogen atoms, and/or aromatic moieties or R2 and R3 together form a divalent alkyl radical with 1 to 10 carbon atoms which optionally includes oxygen atoms, nitrogen atoms or aromatic moieties. The composition shows excellent properties in terms of expansion stability over a wide temperature range, can be expanded at temperatures below 150° C. and is suitable for baffle and/or reinforcement elements.