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公开(公告)号：US20210047516A1
公开(公告)日：2021-02-18
申请号：US16966929
申请日：2019-02-04
申请人： BYK-Chemie GmbH
发明人： Matthias Daab , Josef Breu , Hubert Schiessling , Hussein Kalo
摘要： The invention relates to a process for delamination of a layered silicate in an aqueous medium, wherein in a first step a layered silicate having a layer charge Lc from ≥0.25 to ≤1.0 and a charge equivalent area As=47.6 Å2/(2Lc), is treated with a delamination agent, and in a second step the thus treated layered silicate is contacted with an aqueous medium, whereby the delamination agent is a compound having exactly one positively charged atom, the positively charged atom being selected from the group consisting of nitrogen and phosphorous; contains of functional groups selected from the group consisting of hydroxyl groups, ether groups, sulfonic acid ester groups and carboxylic acid ester groups, nf being a number from 1 to 10; comprises a total number of carbon atoms nc being from 2 to 20; has a ratio nc/(1+nf) from 1 to 5, wherein nc is the total number of carbon atoms of the delamination agent and nf is the total number of functional groups in the delamination agent as defined under ii.; and has a charge equivalent area Ad being from at least 0.90-fold to 3-fold of the charge equivalent area of the layered silicate As; and wherein the delamination agent is used to treat the layered silicate in an amount of at least equal to the cation exchange capacity of the layered silicate, with the proviso that nf≥2, if Lc≤0.6. The invention further relates to the thus produced delaminated layered silicates, their use in the production of composite and coating material and as a barrier material. Moreover, the invention relates to compositions containing the thus produced delaminated layered silicates.
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公开(公告)号：US11905418B2
公开(公告)日：2024-02-20
申请号：US16966924
申请日：2019-02-04
申请人： BYK-Chemie GmbH
发明人： Matthias Daab , Josef Breu , Andreas Edenharter
CPC分类号： C09C1/3063 , C01B33/405 , C01B33/425
摘要： The invention relates to a process for delamination of a layered silicate in an aqueous medium, wherein in a first step a layered silicate is treated with a delamination agent, and in a second step the thus treated layered silicate is contacted with an aqueous medium, whereby the delamination agent is a compound having exactly one positively charged atom, the positively charged atom being selected from the group consisting of nitrogen and phosphorous; contains nf functional groups selected from the group consisting of hydroxyl groups, ether groups, sulfonic acid ester groups and carboxylic acid ester groups, nf being a number from 3 to 10; comprises a total number of carbon atoms nc being from 4 to 12; has a ratio nc/(1+nf) from 1 to 2, wherein nc is the total number of carbon atoms of the delamination agent and nf is the total number of functional groups in the delamination agent as defined under ii.; contains nt atoms selected from the group consisting of carbon, nitrogen, phosphorous, oxygen and sulfur, nt being ≥9; and wherein the delamination agent is used to treat the layered silicate in an amount of at least equal to the cation exchange capacity of the layered silicate. The invention further relates to the thus produced delaminated layered silicates, their use in the production of composite and coating material and as a barrier material. Moreover, the invention relates to compositions containing the thus produced delaminated layered silicates.
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公开(公告)号：US20220185684A1
公开(公告)日：2022-06-16
申请号：US17677438
申请日：2022-02-22
申请人： BYK-Chemie GmbH
发明人： Hussein Kalo , Josef Breu , Matthias Stoeter , Matthias Daab
摘要： The present invention relates to sheet silicate lamellae of a 2:1 sheet silicate with a high aspect ratio, to a method for producing these sheet silicate lamellae and to an aqueous dispersion which comprises the sheet silicate lamellae. The present invention further relates to the use of the sheet silicate lamellae of the invention for producing a composite material, and also to a corresponding composite material comprising or obtainable using the sheet silicate lamellae, more particularly for use as a diffusion barrier or as a flame retardant.
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公开(公告)号：US11905419B2
公开(公告)日：2024-02-20
申请号：US16966929
申请日：2019-02-04
申请人： BYK-Chemie GmbH
发明人： Matthias Daab , Josef Breu , Hubert Schiessling , Hussein Kalo
CPC分类号： C09C1/3063 , C01B33/405 , C01B33/425 , C08K3/346 , C09D1/02 , C09D5/00
摘要： A process for delamination of a layered silicate in an aqueous medium includes treating a synthetic or naturally occurring 2:1 clay mineral layered silicate with a delamination agent, and contacting the treated layered silicate with an aqueous medium. An amount of the delamination agent used to treat the layered silicate can be at least equal to the cation exchange capacity of the layered silicate. A delaminated layered silicate can be obtained from the process and provided in a dispersion, a composite, or a barrier.
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公开(公告)号：US11358874B2
公开(公告)日：2022-06-14
申请号：US16482328
申请日：2018-01-30
申请人： BYK-Chemie GmbH
发明人： Hussein Kalo , Josef Breu , Matthias Stoeter , Matthias Daab
摘要： The present invention relates to sheet silicate lamellae of a 2:1 sheet silicate with a high aspect ratio, to a method for producing these sheet silicate lamellae and to an aqueous dispersion which comprises the sheet silicate lamellae. The present invention further relates to the use of the sheet silicate lamellae of the invention for producing a composite material, and also to a corresponding composite material comprising or obtainable using the sheet silicate lamellae, more particularly for use as a diffusion barrier or as a flame retardant.
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公开(公告)号：US20210047515A1
公开(公告)日：2021-02-18
申请号：US16966924
申请日：2019-02-04
申请人： BYK-Chemie GmbH
发明人： Matthias Daab , Josef Breu , Andreas Edenharter
摘要： The invention relates to a process for delamination of a layered silicate in an aqueous medium, wherein in a first step a layered silicate is treated with a delamination agent, and in a second step the thus treated layered silicate is contacted with an aqueous medium, whereby the delamination agent is a compound having exactly one positively charged atom, the positively charged atom being selected from the group consisting of nitrogen and phosphorous; contains nf functional groups selected from the group consisting of hydroxyl groups, ether groups, sulfonic acid ester groups and carboxylic acid ester groups, nf being a number from 3 to 10; comprises a total number of carbon atoms nc being from 4 to 12; has a ratio nc/(1+nf) from 1 to 2, wherein nc is the total number of carbon atoms of the delamination agent and nf is the total number of functional groups in the delamination agent as defined under ii.; contains nt atoms selected from the group consisting of carbon, nitrogen, phosphorous, oxygen and sulfur, nt being ≥9; and wherein the delamination agent is used to treat the layered silicate in an amount of at least equal to the cation exchange capacity of the layered silicate. The invention further relates to the thus produced delaminated layered silicates, their use in the production of composite and coating material and as a barrier material. Moreover, the invention relates to compositions containing the thus produced delaminated layered silicates.
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