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公开(公告)号:US20170204238A1
公开(公告)日:2017-07-20
申请号:US15324819
申请日:2015-07-09
申请人: SIKA TECHNOLOGY AG
CPC分类号: C08J9/103 , B29C44/18 , B29C44/24 , B29K2023/083 , B29K2995/0002 , B29K2995/0015 , B29K2995/0082 , B32B5/20 , B32B2250/02 , B32B2266/0221 , B32B2307/102 , B32B2307/304 , B32B2307/546 , C08J9/0023 , C08J9/0061 , C08J9/10 , C08J2201/026 , C08J2201/03 , C08J2203/04 , C08J2323/04 , C08J2323/08 , C08J2325/08 , C08J2423/08 , C08K5/01 , C08K5/103 , C08K5/14 , C08K5/23 , C08K2003/2296 , C08L23/0853 , C08L23/0884 , C08L2203/14 , C08L2205/025 , C08L2205/035
摘要: Disclosed is a thermally expandable composition, comprising at least one polymer P, cross-linkable by peroxide, and between 1 wt.-% and 2.5 wt.-%, based on the total weight of the composition, of at least one acrylate A, and between 0.2 wt.-% and 2.5 wt.-%, based on the total weight of the composition, of at least one peroxide, and at least one blowing agent, characterised in that the equivalent ratio of said peroxide to said acrylate A is between 0.01 and 0.5, preferably between 0.13 and 0.41, and the weight ratio of said peroxide to said acrylate A is lower than 0.33 and said polymer P comprises or essentially consists of at least two polymers PI and P2, wherein PI exhibits a melt flow index (MFI) of between 100 and 200 g/10 min, and P2 exhibits a melt flow index of between 0.1 and 60 g/10 min, wherein MFI is determined by ASTM D1238. The thermally expandable composition shows excellent properties in terms of expansion stability and minimised buckling and is especially suitable for baffle and/or reinforcement elements, e.g. in automotive manufacturing.
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公开(公告)号:US20220403128A1
公开(公告)日:2022-12-22
申请号:US17624061
申请日:2020-08-17
申请人: SIKA TECHNOLOGY AG
发明人: Dusko PARIPOVIC , Nicolae BORDEANU , Loic ZINGRAFF
摘要: 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.
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公开(公告)号:US20240018327A1
公开(公告)日:2024-01-18
申请号:US18026369
申请日:2021-11-08
申请人: SIKA TECHNOLOGY AG
IPC分类号: C08J9/32 , C08J9/00 , B60R13/08 , A47L15/42 , B32B5/18 , B32B5/20 , B32B27/06 , B32B27/20 , B32B27/22
CPC分类号: C08J9/32 , B62D25/06 , C08J9/0061 , B60R13/0815 , A47L15/4209 , B32B5/18 , B32B5/20 , B32B27/065 , B32B27/20 , B32B27/22 , C08J2203/184 , C08J2497/02 , C08J2203/22 , C08J2203/04 , C08J2323/08 , C08J2423/08 , C08J9/0066
摘要: A thermally expandable composition includes at least one polymer P, at least one chemical blowing agent CBA, at least one physical blowing agent PBA composed of expandable microspheres, and at least one filler F. A damping element includes a first layer composed of an expansion material and a second layer composed of an acoustic damping material. The damping element is suitable for providing vibration and/or noise damped systems.
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公开(公告)号:US20190169392A1
公开(公告)日:2019-06-06
申请号:US16324502
申请日:2017-09-25
申请人: SIKA TECHNOLOGY AG
发明人: Dusko PARIPOVIC
摘要: A thermally expandable composition, includes between 20 and 85 wt.-% of least one thermoplastic polymer P cross-linkable by radical reaction, between 2 and 15 wt.-% of at least one azo radical initiator I, optionally up to 25 wt.-% of at least one adhesion promoter AD, up to 10 wt.-% of at least one tackifier T, up to 2.5 wt.-% of at least one antioxidant AO, and up to 2.5 wt.-% of at least one polyacrylate AC, having a molecular weight of less than 2,500 g/mol, wherein all individual amounts are based on the total composition before expansion. The thermally expandable composition is free of commonly used blowing agents such as azodicarbonamide, but shows excellent properties in terms of expansion stability over a wide temperature range between 120° C. and 200° C. and is especially suitable for baffle and/or reinforcement elements, e.g. in automotive manufacturing.
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公开(公告)号:US20240059943A1
公开(公告)日:2024-02-22
申请号:US18273210
申请日:2022-03-22
申请人: SIKA TECHNOLOGY AG
发明人: Dusko PARIPOVIC , Dominique GALLO , Antonio VOCI
IPC分类号: C09J163/00 , C08G59/24 , C08G59/22 , C08G59/40 , C08G59/68 , C09J11/08 , C09J5/06 , B32B37/12 , B32B15/08
CPC分类号: C09J163/00 , C08G59/245 , C08G59/226 , C08G59/4035 , C08G59/686 , C09J11/08 , C09J5/06 , B32B37/12 , B32B15/08 , C09J2463/00 , C09J2475/00 , B32B2255/26 , B32B2307/54 , B32B2307/542 , B32B2307/748
摘要: Heat-curing epoxy resin compositions containing a curing agent in the form of a mixture of aromatic dicarboxylic dihydrazide with a dihydrazide chosen from the group consisting of glutaric dihydrazide, adipic dihydrazide, pimelic dihydrazide, 8,12-eicosadienedioic acid-1,20-dihydrazide and 4-isopropyl-2,5-dioxoimidazolidine-1,3-di(propionohydrazide). The epoxy resin compositions are particularly suitable for automotive body-in-white bonding, where after induction pre-curing without additional metal joining techniques the pre-cured adhesives are cured again in a further step at temperatures of around 180° C.
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公开(公告)号:US20220372239A1
公开(公告)日:2022-11-24
申请号:US17623821
申请日:2020-08-17
申请人: SIKA TECHNOLOGY AG
发明人: Dusko PARIPOVIC , Loic ZINGRAFF , Nicolae BORDEANU
摘要: 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.
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公开(公告)号:US20180355138A1
公开(公告)日:2018-12-13
申请号:US15781692
申请日:2016-12-15
申请人: SIKA TECHNOLOGY AG
CPC分类号: 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
摘要: 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.
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公开(公告)号:US20220372238A1
公开(公告)日:2022-11-24
申请号:US17623471
申请日:2020-08-17
申请人: SIKA TECHNOLOGY AG
发明人: Dusko PARIPOVIC , Denise STORRER
摘要: A thermally expandable composition which includes at least one thermoplastic polymer, at least one chemical blowing agent, at least one free radical initiator, and at least one co-agent having at least two maleimide groups. 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.
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公开(公告)号:US20220242492A1
公开(公告)日:2022-08-04
申请号:US17615614
申请日:2020-07-17
申请人: SIKA TECHNOLOGY AG
发明人: Dusko PARIPOVIC , Michele GATTI , Stephan NIGGEMANN , Sabine WENIG , Reto DOHNER
摘要: A system of a reinforced body element of a motor vehicle which includes a body element, an expansion material and a reinforcing layer. The expansion material has an expansion rate of at least 200%. Furthermore, the expansion material is arranged between the body element and the reinforcing layer.
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公开(公告)号:US20220227955A1
公开(公告)日:2022-07-21
申请号:US17618119
申请日:2020-06-12
申请人: SIKA TECHNOLOGY AG
摘要: 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.
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