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公开(公告)号:US4370437A
公开(公告)日:1983-01-25
申请号:US345967
申请日:1982-02-05
摘要: The addition of a nitrite-sorbate stabilizing system to a copolymer of a conjugated diene and a monovinyl-substituted aromatic hydrocarbon improves thermal stability and suppresses gel and fisheye formation.
摘要翻译: 向共轭二烯和单乙烯基取代的芳族烃的共聚物中加入亚硝酸盐 - 山梨酸酯稳定体系提高了热稳定性并抑制凝胶和鱼眼形成。
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公开(公告)号:US4586995A
公开(公告)日:1986-05-06
申请号:US419248
申请日:1982-09-17
IPC分类号: C08F2/54 , C08F10/02 , C08F110/02 , C08J3/28 , C08F2/46
CPC分类号: C08J3/28 , C08F10/02 , C08F110/02 , C08J2323/04
摘要: A novel polymer and polymer treatment method are provided. The method involves irradiation of a polymer under non-gelling conditions at a temperature above the polymer melting temperature and in the absence of oxygen. The polymer is characterized by a unique long chain Y-branched molecular structure.
摘要翻译: 提供了一种新的聚合物和聚合物处理方法。 该方法包括在非凝胶化条件下在高于聚合物熔融温度的温度下和在不存在氧的情况下照射聚合物。 聚合物的特征在于独特的长链Y支链分子结构。
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公开(公告)号:US4598128A
公开(公告)日:1986-07-01
申请号:US474767
申请日:1983-03-14
CPC分类号: C08L23/04 , C08L23/06 , C08L2205/02 , C08L2207/07
摘要: An ethylene polymer composition is provided, the composition being a blend of a first ethylene polymer and a second ethylene polymer, the second ethylene polymer characterized by molecules having long chain Y-branches. The blend can be prepared by an extrusion process in which a portion of the polyethylene fed to the process is irradiated and the irradiated and non-irradiated polymers are blended by melt extrusion. The blends exhibit high flow activation energies and good blow-molding properties.
摘要翻译: 提供乙烯聚合物组合物,该组合物是第一乙烯聚合物和第二乙烯聚合物的共混物,第二乙烯聚合物的特征在于具有长链Y分支的分子。 共混物可以通过挤出方法制备,其中将一部分进料到该方法中的聚乙烯进行照射,并且通过熔融挤出将辐照和未辐射的聚合物共混。 共混物表现出高流动活化能和良好的吹塑性能。
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公开(公告)号:US4522987A
公开(公告)日:1985-06-11
申请号:US396930
申请日:1982-07-09
申请人: John P. Hogan , Eric T. Hsieh , James C. Randall
发明人: John P. Hogan , Eric T. Hsieh , James C. Randall
IPC分类号: C08F4/00 , C08F2/34 , C08F4/06 , C08F4/24 , C08F210/00 , C08F210/16
CPC分类号: C08F210/16 , Y10S526/901
摘要: A process for copolymerizing ethylene with another monoolefin is described wherein the other monoolefin is incorporated into the polymer at very high efficiencies and in several instances the copolymer produced contains a higher concentration of the comonomer than the gas phase in the polymerization zone. A novel ethylene/1-hexene copolymer having very high relative comonomer dispersities (99% or higher, and even above 100%) is also described.
摘要翻译: 描述了将乙烯与另一种单烯烃共聚的方法,其中其它单烯烃以非常高的效率并入聚合物中,并且在几种情况下,产生的共聚物含有比聚合区中的气相更高浓度的共聚单体。 还描述了具有非常高的相对共聚单体分散性(99%或更高,甚至高于100%)的新型乙烯/ 1-己烯共聚物。
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