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公开(公告)号：US10689497B2
公开(公告)日：2020-06-23
申请号：US16273075
申请日：2019-02-11
Applicant: AGENCY FOR SCIENCE, TECHNOLOGY AND RESEARCH
Inventor： Xu Li , Yu Yuan Chieng , Siew Yee Wong , Xikui Zhang
IPC: C09D133/08 , C08J7/04 , C08F20/06 , C08F2/44 , C09D4/06 , C09D133/02
Abstract: This invention relates to a a one-step process for making a polymer composite suspension for coating plastic films characterized in that a first polymer is synthesized in-situ optionally in the presence of other polymers and in the presence of clay. Preferably the polymer composite suspension comprises a) 1.0 to 11.0 wt % of clay or silane modified clay, b) 0.1 to 10.0 wt % of poly (acrylic acid), which is a copolymer of acrylic acid (AA) with at least one other monomer selected from 2-ethylhexyl acrylate (EHA), β-carboxyethyl acrylate (β-CEA), methacrylamidoethyl ethylene urea (WAM II) and ethoxylated behenyl methacrylate (β-EM), c) 1.0 to 15.0 wt % of other polymers, preferably poly (vinyl alcohol) and d) 70 to 97 wt % of water or mixture of water with 2-propanol. The coating films made from the suspensions show good barrier capabilities against water vapor and oxygen can be used to make barrier layers on or within plastic films for packaging applications. The invention also relates to methods for making silane modified clay usable in the process for making the suspensions.
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公开(公告)号：US10934442B2
公开(公告)日：2021-03-02
申请号：US15317807
申请日：2015-06-09
Applicant: Agency for Science, Technology and Research
Inventor： Yun Zong , Xu Li , T.S. Andy Hor , Regina Lum , Yu Yuan Chieng
IPC: C09D7/48 , C09D5/32 , B05D3/00 , C09D129/04 , C08K5/00
Abstract: The present invention provides a coating composition comprising a) a metal complex comprising an organic acid or anion thereof coordinated to a metal ion; and b) a polymer, wherein there is no covalent bond between said metal complex and the polymer.
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公开(公告)号：US20200299477A1
公开(公告)日：2020-09-24
申请号：US16892269
申请日：2020-06-03
Applicant: AGENCY FOR SCIENCE, TECHNOLOGY AND RESEARCH
Inventor： Xu LI , Yu Yuan Chieng , Siew Yee Wong , Xikui Zhang
IPC: C08J7/04 , C08F20/06 , C08F2/44 , C09D4/06 , C09D133/02
Abstract: This invention relates to a one-step process for making a polymer composite suspension for coating plastic films characterized in that a first polymer is synthesized in-situ optionally in the presence of other polymers and in the presence of clay. Preferably the polymer composite suspension comprises a) 1.0 to 11.0 wt % of clay or silane modified clay, b) 0.1 to 10.0) wt % of poly (acrylic acid), which is a copolymer of acrylic acid (AA) with at least one other monomer selected from 2-ethylhexyl acrylate (EHA), β-carboxyethyl acrylate (β-CEA), methacrylamidoethyl ethylene urea (WAM II) and ethoxylated behenyl methacrylate (β-FM), c) 1.0 to 15.0 wt % of other polymers, preferably poly (vinyl alcohol) and d) 70 to 97 wt % of water or mixture of water with 2-propanol. The coating films made from the suspensions show good barrier capabilities against water vapor and oxygen can be used to make barrier layers on or within plastic films for packaging applications. The invention also relates to methods for making silane modified clay usable in the process for making the suspensions.
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Patent Agency Ranking
公开(公告)号：US12134667B2
公开(公告)日：2024-11-05
申请号：US18076186
申请日：2022-12-06
Applicant: AGENCY FOR SCIENCE, TECHNOLOGY AND RESEARCH
Inventor： Xu Li , Yu Yuan Chieng , Siew Yee Wong , Xikui Zhang
Abstract: This invention relates to a a one-step process for making a polymer composite suspension for coating plastic films characterized in that a first polymer is synthesized in-situ optionally in the presence of other polymers and in the presence of clay. Preferably the polymer composite suspension comprises a) 1.0 to 11.0 wt % of clay or silane modified clay, b) 0.1 to 10.0 wt % of poly (acrylic acid), which is a copolymer of acrylic acid (AA) with at least one other monomer selected from 2-ethylhexyl acrylate (EHA), β-carboxyethyl acrylate (β-CEA), methacrylamidoethyl ethylene urea (WAM II) and ethoxylated behenyl methacrylate (β-EM), c) 1.0 to 15.0 wt % of other polymers, preferably poly (vinyl alcohol) and d) 70 to 97 wt % of water or mixture of water with 2-propanol. The coating films made from the suspensions show good barrier capabilities against water vapor and oxygen can be used to make barrier layers on or within plastic films for packaging applications. The invention also relates to methods for making silane modified clay usable in the process for making the suspensions.
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公开(公告)号：US11542347B2
公开(公告)日：2023-01-03
申请号：US16892269
申请日：2020-06-03
Applicant: AGENCY FOR SCIENCE, TECHNOLOGY AND RESEARCH
Inventor： Xu Li , Yu Yuan Chieng , Siew Yee Wong , Xikui Zhang
IPC: C09C1/42 , C09C3/12 , C08F20/06 , C08F2/44 , C09D4/06 , C09D133/02 , C08J7/04 , C08J7/043 , C08J7/048
Abstract: This invention relates to a one-step process for making a polymer composite suspension for coating plastic films characterized in that a first polymer is synthesized in-situ optionally in the presence of other polymers and in the presence of clay. Preferably the polymer composite suspension comprises a) 1.0 to 11.0 wt % of clay or silane modified clay, b) 0.1 to 10.0 wt % of poly (acrylic acid), which is a copolymer of acrylic acid (AA) with at least one other monomer selected from 2-ethylhexyl acrylate (EHA), β-carboxyethyl acrylate (β-CEA), methacrylamidoethyl ethylene urea (WAM II) and ethoxylated behenyl methacrylate (β-FM), c) 1.0 to 15.0 wt % of other polymers, preferably poly (vinyl alcohol) and d) 70 to 97 wt % of water or mixture of water with 2-propanol. The coating films made from the suspensions show good barrier capabilities against water vapor and oxygen can be used to make barrier layers on or within plastic films for packaging applications. The invention also relates to methods for making silane modified clay usable in the process for making the suspensions.
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公开(公告)号：US20210352941A1
公开(公告)日：2021-11-18
申请号：US17386417
申请日：2021-07-27
Inventor： Xu Li , Yu Yuan Chieng , Siew Yee Wong , Suxi Wang , Jen-Yi Huang , Weibiao Zhou
Abstract: The invention is directed to a nanostructured composite material comprising a mixture of at least one metal particle such as iron and a carbon material from biomass such as D-glucose, D-glucosamine hydrochloride or α-cyclodextrin. The invention is also directed to a composition comprising the composite material comprising the composite material and an inorganic salt, and a method for synthesizing the composite material comprising immersing the carbon material into a solution of metal ions, drying the impregnated carbon particle and subjecting the impregnated carbon particle to a carbothermal reduction process. The nanostructured composite material is useful as an oxygen scavenging layer in a multi-layer film which comprises the oxygen scavenging layer and an oxygen barrier layer that retards the permeation of oxygen from an external environment.
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公开(公告)号：US11134707B2
公开(公告)日：2021-10-05
申请号：US15576696
申请日：2016-05-23
Inventor： Xu Li , Yu Yuan Chieng , Siew Yee Wong , Suxi Wang , Jen-Yi Huang , Weibiao Zhou
Abstract: The invention is directed to a nanostructured composite material comprising a mixture of at least one metal particle such as iron and a carbon material from biomass such as D-glucose, D-glucosamine hydrochloride or a-cyclodextrin. The invention is also directed to a composition comprising the composite material comprising the composite material and an inorganic salt, and a method for synthesizing the composite material comprising immersing the carbon material into a solution of metal ions, drying the impregnated carbon particle and subjecting the impregnated carbon particle to a carbothermal reduction process. The nanostructured composite material is useful as an oxygen scavenging layer in a multi-layer film which comprises the oxygen scavenging layer and an oxygen barrier layer that retards the permeation of oxygen from an external environment.
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公开(公告)号：US10233297B2
公开(公告)日：2019-03-19
申请号：US15313091
申请日：2015-05-21
Applicant: AGENCY FOR SCIENCE, TECHNOLOGY AND RESEARCH
Inventor： Xu Li , Yu Yuan Chieng , Siew Yee Wong , Xikui Zhang
IPC: C08F2/44 , C08F20/06 , C08J7/04 , C09D4/06 , C09D133/02
Abstract: This invention relates to a a one-step process for making a polymer composite suspension for coating plastic films characterized in that a first polymer is synthesized in-situ optionally in the presence of other polymers and in the presence of clay. Preferably the polymer composite suspension comprises a) 1.0 to 11.0 wt % of clay or silane modified clay, b) 0.1 to 10.0 wt % of poly (acrylic acid), which is a copolymer of acrylic acid (AA) with at least one other monomer selected from 2-ethylhexyl acrylate (EHA), β-carboxyethyl acrylate (β-CEA), methacrylamidoethyl ethylene urea (WAM II) and ethoxylated behenyl methacrylate (β-EM), c) 1.0 to 15.0 wt % of other polymers, preferably poly (vinyl alcohol) and d) 70 to 97 wt % of water or mixture of water with 2-propanol. The coating films made from the suspensions show good barrier capabilities against water vapor and oxygen can be used to make barrier layers on or within plastic films for packaging applications. The invention also relates to methods for making silane modified clay usable in the process for making the suspensions.
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