公开(公告)号：US20170342230A1

公开(公告)日：2017-11-30

申请号：US15537085

申请日：2015-12-18

Applicant: SIKA TECHNOLOGY AG

Inventor： Nicolae BORDEANU ,  Rui XU-RABL ,  Urs BURCKHARDT

IPC: C08J9/08 ,  C07C269/02 ,  C07C269/04 ,  C07D295/205 ,  C07C271/16 ,  C07C271/20 ,  C07C271/12 ,  E04B1/88 ,  B60R13/08

CPC classification number: C08J9/08 ,  B60R13/08 ,  B60R13/0815 ,  C07C269/02 ,  C07C269/04 ,  C07C271/12 ,  C07C271/16 ,  C07C271/20 ,  C07C271/24 ,  C07C2601/16 ,  C07D295/205 ,  C08J2201/026 ,  C08J2203/02 ,  C08J2300/22 ,  C08J2323/04 ,  C08J2323/12 ,  C08J2325/10 ,  C08J2353/00 ,  C08J2363/00 ,  C08J2375/04 ,  E04B1/88

Abstract: A chemical blowing agent is described that includes at least one tertiary alkyl carbamate. The chemical blowing agent can be activated thermally and is suitable for foaming thermoplastic materials and can, for example, be incorporated into thermally expandable baffle and/or reinforcement elements, which can be used in automotive manufacturing and building insulation.

公开(公告)号：US20220372239A1

公开(公告)日：2022-11-24

申请号：US17623821

申请日：2020-08-17

Applicant: SIKA TECHNOLOGY AG

Inventor： Dusko PARIPOVIC ,  Loic ZINGRAFF ,  Nicolae BORDEANU

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

Abstract: A thermally expandable composition includes at least one epoxy-functional polymer, at least one endothermic chemical blowing agent, and at least one curative selected from the group made of a urea, urea derivatives, guanidine derivatives, amidine derivatives, and imidazoles. Further, a baffle and/or a reinforcement element for hollow structures includes the thermally expandable composition, a process manufactures the baffle and/or the reinforcement element, the baffle and/or the reinforcement element is used for sealing, baffling, or reinforcing of a cavity or a hollow structure, and a method seals, baffles and/or reinforces a cavity or hollow structure.

公开(公告)号：US20220227955A1

公开(公告)日：2022-07-21

申请号：US17618119

申请日：2020-06-12

Applicant: SIKA TECHNOLOGY AG

Inventor： Nicolae BORDEANU ,  Shunsuke YAMADA ,  Dusko PARIPOVIC

IPC: C08J9/10 ,  C08J9/00

Abstract: A thermally expandable composition comprising a thermoplastic polymer compound and/or an elastomer compound, at least one blowing agent including at least one dicarboxylic acid salt of an aminoguanidine compound, optionally at least one free radical initiator and/or a vulcanization system, and at least one guanidine derivative. The invention is also related to 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：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：US20220403128A1

公开(公告)日：2022-12-22

申请号：US17624061

申请日：2020-08-17

Applicant: SIKA TECHNOLOGY AG

Inventor： Dusko PARIPOVIC ,  Nicolae BORDEANU ,  Loic ZINGRAFF

IPC: C08J9/00 ,  C08J9/08 ,  B29C45/00 ,  B29C45/72

Abstract: A thermally expandable composition includes at least one epoxy-functional polymer, at least one endothermic chemical blowing agent, at least one free radical initiator, and at least one guanidine derivative. The invention is also related to a baffle and/or a reinforcement element for hollow structures including the thermally expandable composition, to a process for manufacturing the baffle and/or the reinforcement element, to use of the baffle and/or the 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.