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公开(公告)号：US11634531B2
公开(公告)日：2023-04-25
申请号：US16068619
申请日：2016-08-11
发明人： Steven K. Henning , Nan Tian , Herbert Chao
IPC分类号： C08G18/62 , C08F36/22 , C08G18/69 , C08G18/32 , C08G18/65 , C08G18/76 , C09K3/10 , C09D175/14 , C09D13/00 , C09J175/14 , C08F136/22 , C08F236/22 , C08G18/12 , C08G101/00
摘要： A polymer having a hydrophobic polymer chain derived from monomers of farnesene and other optional monomers, such as dienes and vinyl aromatics. The polymer also includes one or more terminal functional groups, such as an amino group, a glycidyl group, a carboxylic acid group, a (meth)acrylate group, a silane group, an isocyanate group, an acetoacetate group, a phenolic group, and a hydroxyl group. Functional groups, such as carboxylic acids, may also be grafted along the hydrophobic polymer chain. The polymer may be incorporated in curable compositions that optionally include one or more polymer resins having similar functional groups. Methods for preparing the curable polymer compositions are also provided. The curable or cured form of the polymer composition may be used in various products, such as a sealant, a coating, a caulk, an electric potting compound, a membrane, a sponge, a foam, an adhesive, or a propellant binder.
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公开(公告)号：US20220340723A1
公开(公告)日：2022-10-27
申请号：US17729682
申请日：2022-04-26
发明人： Michael McLeod , Fengkui Li , Russell McDonald
摘要： Thin polymer sheets and used thereof are described. A polymer sheet can include greater than 90 wt. % of a single-site catalyzed polyolefin (PO) and have a thickness of at least 0.0254 cm. The sheet can be used to produce molded articles.
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公开(公告)号：US11174356B2
公开(公告)日：2021-11-16
申请号：US15335833
申请日：2016-10-27
发明人： Luyi Sun , Tim Coffy , Leland Daniels
IPC分类号： B29C49/00 , C08J3/00 , C08L23/10 , C08L23/14 , B29C49/06 , B29K23/00 , B29L31/00 , C08L23/16
摘要： A polymer composition of polypropylene copolymer and 1 to 50% by weight of hard resin. The polypropylene copolymer is either an impact copolymer or a random copolymer. The polymer composition can be used to make injection stretch blow molded articles having improved top load strength.
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公开(公告)号：US11155657B2
公开(公告)日：2021-10-26
申请号：US16547347
申请日：2019-08-21
发明人： Douglas Burmaster , Owen Hodges , J. Layne Lumus , Lu Ann Kelly , Mark Murphy
IPC分类号： C08F210/06 , C08F210/16 , C08J5/00 , C08L23/14
摘要： Molded articles are prepared from propylene-ethylene copolymers and exhibiting improved clarity and strength properties. Articles prepared include bottles and other thin-walled articles. The articles are prepared using an isotactic propylene-ethylene random copolymer resin having an ethylene content of from about 0.5 to about 3 percent by total weight of copolymer, with a xylene solubles content of less than about 1.5 percent. The injection molded article may exhibit less than about 20 percent haze, as determined by ASTM D1003, at a thickness of about 0.08 inch (2.03 mm). Articles may also be prepared from similar copolymers having an ethylene content greater than about 3 percent by total weight of copolymer, with a xylene solubles content of less than about 4 percent by total weight of copolymer. These articles may exhibit less than about 13 percent haze, as determined by ASTM D1003, at a thickness of about 0.08 inch (2.03 mm).
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公开(公告)号：US20210301114A1
公开(公告)日：2021-09-30
申请号：US17212772
申请日：2021-03-25
发明人： Brett ROBB , Steven A. SCHWARTZ
摘要： A high melt strength resin composition includes at least a) non-functionalized polypropylene, b) at least one acrylate such as zinc diacrylate, calcium diacrylate or aluminum triacrylate in a total amount of from 0.1 to 5% by weight based on the weight of non-functionalized polypropylene, and c) at least one acid neutralizer in a total amount of from 0.005 to 5% by weight based on the total weight of the at least one acrylate. The resin composition is compounded at a processing temperature between 185° C. and 260° C. to obtain the high melt strength polypropylene.
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公开(公告)号：US11078349B2
公开(公告)日：2021-08-03
申请号：US16393493
申请日：2019-04-24
发明人： Olivier Defrain , Olivier Klein
摘要： A curable low sulfur liquid rubber composition including at least one polymer which contains, in polymerized form, at least one monomer having a carbon chain of four and a peroxide system which includes at least one organic peroxide and at least one coagent. The polymer has a vinyl content of 1% to 90% and a number average molecular weight of 800 g/mol to 70,000 g/mol. The curable low sulfur liquid rubber composition has a sulfur content of 0 to 1%, by weight, and is curable at a temperature of 100° C. to 190° C.
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公开(公告)号：US10465021B2
公开(公告)日：2019-11-05
申请号：US14417735
申请日：2013-07-26
IPC分类号： C08F210/16 , C08F110/02 , C08F10/02 , C08L23/08 , C08F4/6592
摘要： An uncompounded particulate metallocene-produced polyethylene can have a multimodal molecular weight distribution and particle size distribution measured by obtaining at least four fractions by sieving. A set of Mw values including an Mw value for each fraction can be obtained. A set of Mn values including an Mn value for each fraction can be obtained. A ratio between a standard deviation value of the Mw set and a mean value of the Mw set can be equal to or less than 0.15. A ratio between a standard deviation value of the Mn set and a mean value of the Mn set can be equal to or less than 0.15. The uncompounded particulate metallocene-produced polyethylene can be prepared by a process that includes polymerization in an apparatus. The apparatus can include at least three serially connected loop reactors.
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公开(公告)号：US10457752B2
公开(公告)日：2019-10-29
申请号：US15616169
申请日：2017-06-07
IPC分类号： C08C19/25 , C08C19/28 , C08K9/06 , C08L9/06 , C08K3/36 , C08F236/10 , C08K5/548 , C08C19/44 , C08L9/00 , C08L47/00
摘要： According to an aspect of the invention, a curable rubber composition is provided which includes a high molecular weight diene elastomer; optionally, a carbon black composition; a silica composition; and a farnesene polymer comprising farnesene monomers. The farnesene polymer is modified with at least one silane group, has a number average molecular weight of 1,000 g/mol to 100,000 g/mol, and has a glass transition temperature of equal to or less than −50° C. According to another aspect of the invention, a method for producing a rubber composition for use in a tire is provided. The method includes forming a composition by mixing a farnesene polymer modified with at least one silane group, a silica composition, a high molecular weight diene elastomer, and optionally a carbon black composition, the farnesene polymer comprising farnesene monomers; and curing the composition.
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公开(公告)号：US10450446B2
公开(公告)日：2019-10-22
申请号：US15495295
申请日：2017-04-24
IPC分类号： C08L9/06 , C08L9/00 , B60C1/00 , C08F212/08 , C08L21/00
摘要： A low molecular weight co-oligomer containing styrene and α-methyl styrene in bound form and having a ring and ball softening point not greater than 50° C. is useful in modifying the properties of a diene elastomer-based curable rubber composition capable of being used to manufacture tire treads.
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公开(公告)号：US20190315943A1
公开(公告)日：2019-10-17
申请号：US15950426
申请日：2018-04-11
发明人： Olivier Defrain
IPC分类号： C08L9/00
摘要： A curable liquid rubber composition having improved viscosity stability is provided. The curable liquid rubber composition includes at least one functionalized crosslinkable polymer that is liquid at 25° C., contains at least one diene monomer in polymerized form, and is functionalized with one or more anhydride functional groups, one or more hydroxyl functional groups or one or more (meth)acrylate functional groups; at least one non-functionalized crosslinkable polymer that is liquid at 25° C., contains at least one diene monomer in polymerized form, and is not functionalized with anhydride, hydroxyl or (meth)acrylate functional groups; at least one metallic monomer coagent which is a metal carboxylate salt containing at least one (meth)acrylate functional group; and at least one inorganic filler. The curable liquid rubber composition has a total moisture content of not more than 1000 ppm, whereby controlling the amount of water reduces the tendency of the composition to exhibit an increase in viscosity over time.
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