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公开(公告)号：US11535733B2
公开(公告)日：2022-12-27
申请号：US16802750
申请日：2020-02-27
发明人： Michael McLeod , John Ashbaugh , Marc Mayhall
摘要： Color-stable rheology controlled polyolefin compositions and methods of making are described. A color-stable rheology controlled polyolefin composition can include a controlled rheology grade thermoplastic polyolefin, and an effective amount of a trisamide-based compound that imparts color-stability to the composition. The color-stable solid-state thermoplastic polyolefin composition can have a Hunter b value color change (Δb) rate of ≤0.03/day when stored at 93° C. for 50 days.
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公开(公告)号：US11512234B2
公开(公告)日：2022-11-29
申请号：US16739924
申请日：2020-01-10
发明人： Keith A. Nelson , Violeta N. Keefe , Nestor Hansen
IPC分类号： C09J147/00 , C08F36/22 , C08F236/22 , C08F136/22
摘要： An adhesive composition made from an elastomer and a tackifying resin. The tackifying resin includes a farnesene polymer or copolymer having the following properties: i) less than 10 weight percent of volatile organic compounds; ii) Mn between 300 Da and 1000 Da; iii) Mw between 400 Da and 3000 Da; iv) Mw/Mn between 1.00 and 3.00; v) Tg between −50° C. and 20° C.; and vi) viscosity between 400,000 cP and 1,000,000 cP at 25° C. A method of making the farnesene-based polymer or copolymer includes combining a farnesene monomer and a solvent and optionally adding one or more co-monomers selected from dienes, branched mono-olefins, and vinyl aromatics, to provide a monomer feed, and polymerizing the monomer feed by combining it with a Friedel-Crafts initiator in a vessel. The farnesene-based polymer or copolymer tackifier may be combined with one or more elastomers and one or more other tackifiers to form an adhesive composition.
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公开(公告)号：US11359070B2
公开(公告)日：2022-06-14
申请号：US16868916
申请日：2020-05-07
摘要： The BOPP film includes a polypropylene, an absence of a nucleating agent, and an additive blended with the polypropylene forming a polypropylene/additive blend, wherein the additive is potassium stearate.
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公开(公告)号：US20210403694A1
公开(公告)日：2021-12-30
申请号：US17363127
申请日：2021-06-30
摘要： Disclosed is a polymeric composition containing at least 95 wt. % of a polypropylene copolymer; and 50 ppm to 2000 ppm of an aryl amide containing clarifying agent or a phosphate ester salt containing clarifying agent or a combination thereof, wherein the polymeric composition has a haze value of A after being extruded once and a haze value of B after being extruded 5 times, wherein the ratio of A to B is 1 to 1.35 and A is less than 25%, and wherein A and B are determined in accordance with ASTM D1003, at a thickness of about 40 mil, methods of making the polymeric composition and articles containing the polymeric composition.
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公开(公告)号：US20210146342A1
公开(公告)日：2021-05-20
申请号：US16687820
申请日：2019-11-19
发明人： Joseph E. Pelati
摘要： An oxidation catalyst for the oxidation of styrene to benzaldehyde and acetophenone, the oxidation catalyst comprising: a porous support; and an active phase comprising an oxygen activation metal comprising cobalt (Co), manganese (Mn), iron (Fe), molybdenum (Mo), or a combination thereof. A method of forming the oxidation catalyst, a method of forming an oxidation product comprising benzaldehyde and acetophenone by contacting the oxidation catalyst with styrene and air in an oxidation reactor, and a system and method for reducing the fouling in a process for the production of styrene by introducing an additive stream comprising at least a portion of the oxidation product into a stream comprising styrene and byproduct divinyl benzene (DVB) are also disclosed.
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公开(公告)号：US10982027B2
公开(公告)日：2021-04-20
申请号：US16142478
申请日：2018-09-26
发明人： Luyi Sun , Mark Leland
IPC分类号： C08F210/06 , B29C49/06 , C08K3/01 , B29C49/00 , C08K5/00 , B29C49/10 , B29K23/00 , B29L31/00 , B29L7/00 , B29L22/00
摘要： A polymer composition adapted for use in injection stretch blow molding may include a metallocene random propylene-based copolymer in the absence of a clarifier. The metallocene random propylene-based copolymer may exhibit a melting point of from 105° C. to less than 175° C., a recrystallization temperature ranging from 85° C. to 100° C. as measured by DSC, a microtacticity ranging from 89% to 99%, a molecular weight (Mw) ranging from 170,000 to 210,000, and a melt flow rate of from about 1 dg/min. to about 40 dg/min. A method of forming an injection stretch blow molded (ISBM) article may include providing the metallocene random propylene-based copolymer, injection molding the metallocene random propylene-based copolymer in the absence of a clarifier into a preform, and stretch-blowing the preform into an article.
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公开(公告)号：US20210040286A1
公开(公告)日：2021-02-11
申请号：US16985097
申请日：2020-08-04
发明人： Fengkui Li , Jayna Brown , Jon David Tippet , Kenneth P. Blackmon , David W. Knoeppel , John R. Gaustad , Wyman T. Stephens , Ying Wang
摘要： A polystyrene (PS) composition for making an extruded foam, the PS composition comprising: a dried PS/alumina compound comprising a PS and an alumina additive, wherein the dried PS/alumina compound has a moisture content, measured by Coulometer, that is less than or equal to about 0.05 weight percent (wt %); and a blowing agent.
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公开(公告)号：US20200317904A1
公开(公告)日：2020-10-08
申请号：US16376375
申请日：2019-04-05
IPC分类号： C08L47/00 , C08F136/06 , C08F136/22 , C08F212/08 , C08F236/06 , C08K3/22 , C08K5/098 , C08K13/02 , C09J147/00 , C09J125/10 , C09K3/10 , G10K11/162
摘要： A curable liquid rubber composition including at least one liquid polyene component and at least one heat activated crosslinking agent. The liquid polyene component may be a single polyene or a blend of polyenes. In one embodiment, the liquid polyene component may contain on a molar basis, at least one monomer that results in at least 45 molar percent of C2-C13 pendant groups. In another embodiment, the liquid polyene component may contain on a molar basis at least one monomer that results in at least 20 molar percent of C2-C5 pendant groups, and at least one monomer that results in at least 7 molar percent of C6-C13 pendant groups. After curing, the liquid rubber composition may have a loss factor greater than 0.51, a maximum loss factor temperature greater than −10° C., and a swelling ratio in toluene from 40% to 170% by weight.
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公开(公告)号：US20200262946A1
公开(公告)日：2020-08-20
申请号：US16795790
申请日：2020-02-20
发明人： Michael McLeod , Russell McDonald , Joe Shuler , Mahesh Patkar , Marc Mayhall
摘要： A process forming a high MFR polypropylene includes providing a reactor powder polypropylene, the reactor powder polypropylene having a melt flow rate of less than 100 dg/min. The process also includes mixing the reactor powder polypropylene with a free-radical initiator to form a powder/initiator mixture and subjecting the powder/initiator mixture to post-reactor forming. The present disclosure further provides for a vis-broken polypropylene and a polymer article.
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公开(公告)号：US10696755B2
公开(公告)日：2020-06-30
申请号：US15835203
申请日：2017-12-07
发明人： Carlos De Anda , Giovanni Trimino , Brad Stiles
摘要： A method including operating a high impact polystyrene (HIPS) reaction system having a devolatilizer downstream of a polymerization reactor, and from which a HIPS product is obtained, and injecting an antioxidant into the HIPS reaction system prior to the devolatilizer, with the antioxidant being one or more aromatic antioxidants. A HIPS product produced by operating a HIPS reaction system to produce a HIPS product, with the HIPS reaction system including a devolatilizer downstream of a polymerization reactor, and including injecting an antioxidant into the HIPS reaction system prior to the devolatilizer, with the antioxidant being comprising one or more aromatic antioxidants. The antioxidant may comprise at least one thiol group, at least one cresol group, or both. A system for producing the HIPS product is also provided.
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