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公开(公告)号：US09751820B2
公开(公告)日：2017-09-05
申请号：US14682930
申请日：2015-04-09
发明人： Frank J. Feher , John Kaluen Kan , Joseph C. McAuliffe , Thomas F. McCall , Lawrence J. Pickert , Christopher D. Ploetz , Stephan Rodewald , Timothy A. Sabo , Tang H. Wong
CPC分类号： C07C11/18 , B01D11/0426 , B01D11/0492 , C07C7/04 , C07C7/10
摘要： Methods and apparatus for the purification of isoprene, such as the purification of a bioisoprene composition from fermentor off-gas. The apparatus includes two columns that process the fermentor off-gas, which includes isoprene and various impurities. A solvent is added to the off-gas in the first column, and the isoprene is stripped from the solvent in the second column. Also provided is a downstream further purification process. Also provided are the resulting purified isoprene compositions.
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公开(公告)号：US12036756B2
公开(公告)日：2024-07-16
申请号：US17468049
申请日：2021-09-07
IPC分类号： B29C73/16 , B29D30/06 , C08K5/14 , C08L23/12 , C08L23/22 , B29K23/00 , B29K423/00 , B29L30/00
CPC分类号： B29C73/163 , B29D30/0685 , C08K5/14 , C08L23/12 , C08L23/22 , B29D2030/0695 , B29K2023/22 , B29K2423/12 , B29L2030/00
摘要： This invention reveals a method of manufacturing a puncture sealing pneumatic rubber tire which comprises: (1) building an unvulcanized tire including a circumferential rubber tread, a supporting carcass therefor, two spaced beads, two rubber sidewalls connecting said beads, an inner liner and a solid sealant formulation layer disposed inwardly from said supporting carcass and outwardly from said inner liner, wherein said solid sealant formulation layer is comprised of (a) polyisobutylene, (b) a peroxide, and (c) a reinforcing filler, wherein the polyisobutylene is present in the sealant layer at a level of at least 50 weight percent; and (2) shaping and vulcanizing said tire in a tire mold under conditions of heat and pressure and simultaneously forming in situ a puncture sealant layer in said tire by both crosslinking and partially depolymerizing said polyisobutylene rubber in said sealant layer formulation.
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公开(公告)号：US11773238B2
公开(公告)日：2023-10-03
申请号：US17179515
申请日：2021-02-19
CPC分类号： C08K13/02 , B60C1/0016
摘要： It has been discovered that certain monofunctional thiuram compounds can be synthesized at low cost and utilized as vulcanization accelerators which provide excellent cure rates without causing a high level of scorch. The use of these monofunctional thiuram compounds as vulcanization accelerators also result in cured rubber compositions that exhibit reduced compression set, improved age hardening characteristics, and degradation resistant crosslinks. These monofunctional thiuram compounds are of the structural formula:
wherein R1 and R2 can be the same or different and represent organyl radicals, wherein R1 and R2 contain a total of at least 8 carbon atoms, and wherein R1 and R2 can join together to form a cyclic structure, and wherein R3 represents an organyl radical containing at least 6 carbon atoms.-
公开(公告)号：US11685712B2
公开(公告)日：2023-06-27
申请号：US17894651
申请日：2022-08-24
IPC分类号： C07C333/04 , B01J31/02
CPC分类号： C07C333/04 , B01J31/0271
摘要： The present invention provides a route for synthesizing monofunctional thiuram compounds that is safe, environmentally friendly, and cost effective. This method specifically involves synthesizing a monofunctional thiuram by (1) reacting a tetraorganylthiuram disulfide with an organyl mercaptan to produce the monofunctional thiuram and a dithiocarbamate metal salt or a dithiocarbamate metalloid salt under basic conditions, (2) separating the monofunctional thiuram in an organic phase from the dithiocarbamate metal salt or the dithiocarbamate metalloid salt in an aqueous phase, and (3) recovering the monofunctional thiuram from the aqueous phase. The monofunctional thiuram compounds made in accordance with this invention are of particular value as accelerators for use in the vulcanization of rubber. The use of these monofunctional thiuram compounds as accelerators provides good cure rates and as well as good scorch safety.
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公开(公告)号：US20220097326A1
公开(公告)日：2022-03-31
申请号：US17468049
申请日：2021-09-07
摘要： This invention reveals a method of manufacturing a puncture sealing pneumatic rubber tire which comprises: (1) building an unvulcanized tire including a circumferential rubber tread, a supporting carcass therefor, two spaced beads, two rubber sidewalls connecting said beads, an inner liner and a solid sealant formulation layer disposed inwardly from said supporting carcass and outwardly from said inner liner, wherein said solid sealant formulation layer is comprised of (a) polyisobutylene, (b) a peroxide, and (c) a reinforcing filler, wherein the polyisobutylene is present in the sealant layer at a level of at least 50 weight percent; and (2) shaping and vulcanizing said tire in a tire mold under conditions of heat and pressure and simultaneously forming in situ a puncture sealant layer in said tire by both crosslinking and partially depolymerizing said polyisobutylene rubber in said sealant layer formulation.
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公开(公告)号：US09909144B2
公开(公告)日：2018-03-06
申请号：US14987681
申请日：2016-01-04
发明人： Marguerite A. Cervin , Gopal K. Chotani , Frank J. Feher , Richard La Duca , Joseph C. McAuliffe , Andrei Miasnikov , Caroline M. Peres , Aaron S. Puhala , Karl J. Sanford , Fernando Valle , Gregory M. Whited
IPC分类号： C12N1/20 , C12N1/00 , C12N15/00 , C12P5/02 , C07H21/04 , C12P5/00 , C12N9/10 , C12N9/12 , C12N9/88 , C12N9/90 , C12N15/52
CPC分类号： C12P5/007 , C12N9/1022 , C12N9/1205 , C12N9/1229 , C12N9/88 , C12N9/90 , C12N15/52 , C12Y203/01009 , C12Y207/01036 , C12Y401/01033 , C12Y402/03027 , C12Y503/03002 , Y02E50/343
摘要： The invention features methods for producing isoprene from cultured cells. The invention also provides compositions that include these cultured cells.
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公开(公告)号：US20230029068A1
公开(公告)日：2023-01-26
申请号：US17894651
申请日：2022-08-24
IPC分类号： C07C333/04 , B01J31/02
摘要： The present invention provides a route for synthesizing monofunctional thiuram compounds that is safe, environmentally friendly, and cost effective. This method specifically involves synthesizing a monofunctional thiuram by (1) reacting a tetraorganylthiuram disulfide with an organyl mercaptan to produce the monofunctional thiuram and a dithiocarbamate metal salt or a dithiocarbamate metalloid salt under basic conditions, (2) separating the monofunctional thiuram in an organic phase from the dithiocarbamate metal salt or the dithiocarbamate metalloid salt in an aqueous phase, and (3) recovering the monofunctional thiuram from the aqueous phase. The monofunctional thiuram compounds made in accordance with this invention are of particular value as accelerators for use in the vulcanization of rubber. The use of these monofunctional thiuram compounds as accelerators provides good cure rates and as well as good scorch safety.
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公开(公告)号：US11465968B2
公开(公告)日：2022-10-11
申请号：US17117537
申请日：2020-12-10
IPC分类号： C07C333/04 , B01J31/02
摘要： The present invention provides a route for synthesizing monofunctional thiuram compounds that is safe, environmentally friendly, and cost effective. This method specifically involves synthesizing a monofunctional thiuram by (1) reacting a tetraorganylthiuram disulfide with an organyl mercaptan to produce the monofunctional thiuram and a dithiocarbamate metal salt or a dithiocarbamate metalloid salt under basic conditions, (2) separating the monofunctional thiuram in an organic phase from the dithiocarbamate metal salt or the dithiocarbamate metalloid salt in an aqueous phase, and (3) recovering the monofunctional thiuram from the aqueous phase. The monofunctional thiuram compounds made in accordance with this invention are of particular value as accelerators for use in the vulcanization of rubber. The use of these monofunctional thiuram compounds as accelerators provides good cure rates and as well as good scorch safety.
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公开(公告)号：US20130253141A1
公开(公告)日：2013-09-26
申请号：US13792832
申请日：2013-03-11
发明人： Frank J. Feher , Gregory M. Whited , Gopal K. Chotani , Fernando Valle , Carol Fioresi , Karl J. Sanford , Joseph McAuliffe , Marguerite Cervin , Aaron S. Puhala , Andrei Miasnikov , Ilana S. Aldor
IPC分类号： C08F136/08 , C08F236/10 , C08F236/08
CPC分类号： C08F236/18 , C08F2/00 , C08F36/04 , C08F136/08 , C08F236/08 , C08F236/10 , C08F236/12 , C08L9/00 , C12P5/007 , Y10T436/24
摘要： It has been found that certain cells in culture can convert more than about 0.002 percent of the carbon available in the cell culture medium into isoprene. These cells have a heterologous nucleic acid that (i) encodes an isoprene synthase polypeptide and (ii) is operably linked to a promoter. The isoprene produced in such a cultured medium can then be recovered and polymerized into synthetic rubbers and other useful polymeric materials. The synthetic isoprene containing polymers of this invention offer the benefit of being verifiable as to being derived from non-petrochemical based resources. They can also be analytically distinguished from rubbers that come from natural sources. The present invention more specifically discloses a polyisoprene polymer which is comprised of repeat units that are derived from isoprene monomer, wherein the polyisoprene polymer has δ13C value of greater than −22‰.
摘要翻译： 已经发现，培养物中的某些细胞可将大于约0.002％的细胞培养基中可用的碳转化为异戊二烯。 这些细胞具有异源核酸，其（i）编码异戊二烯合酶多肽，和（ii）可操作地连接于启动子。 然后可以回收在这种培养基中产生的异戊二烯并聚合成合成橡胶和其它有用的聚合物材料。 本发明的合成含异戊二烯的聚合物提供可证实为从非石化基础资源得到的益处。 它们也可以分析与来自天然来源的橡胶。 本发明更具体地公开了由衍生自异戊二烯单体的重复单元组成的聚异戊二烯聚合物，其中聚异戊二烯聚合物的δ13C值大于-220 / 00。
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公开(公告)号：US20210198194A1
公开(公告)日：2021-07-01
申请号：US17117537
申请日：2020-12-10
IPC分类号： C07C333/04 , B01J31/02
摘要： The present invention provides a route for synthesizing monofunctional thiuram compounds that is safe, environmentally friendly, and cost effective. This method specifically involves synthesizing a monofunctional thiuram by (1) reacting a tetraorganylthiuram disulfide with an organyl mercaptan to produce the monofunctional thiuram and a dithiocarbamate metal salt or a dithiocarbamate metalloid salt under basic conditions, (2) separating the monofunctional thiuram in an organic phase from the dithiocarbamate metal salt or the dithiocarbamate metalloid salt in an aqueous phase, and (3) recovering the monofunctional thiuram from the aqueous phase. The monofunctional thiuram compounds made in accordance with this invention are of particular value as accelerators for use in the vulcanization of rubber. The use of these monofunctional thiuram compounds as accelerators provides good cure rates and as well as good scorch safety.
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