摘要:
Embodiments of a polymer compositions and articles comprising such compositions contain at least one multimodal ethylene-based polymer, wherein the multimodal ethylene-based polymer exhibits superior low temperature performance.
摘要:
Polymerization processes to produce polyolefin polymers, for example, polyethylene polymers, from catalyst systems comprising one or more olefin polymerization catalysts and at least one activator are provided. The polyolefin polymers may have a Broad Orthogonal Composition Distribution (BOCD).
摘要:
The present disclosure relates to a process for synthesizing a multi- or dual-headed composition by using an alpha,omega-diene and an organometallic compound in the presence of a catalyst precursor. The present disclosure further relates to use of the compositions, as well as the process to make the same, in olefin polymerization.
摘要:
The invention provides a composition comprising at least one oil, and a first composition comprising the following: A) a first composition A comprising an ethylene/α-olefin/non-conjugated diene interpolymer A, B) an ethylene/α-olefin/non-conjugated diene interpolymer B; and wherein the weight ratio of component A to component B is from 1/1 to 20/1; wherein the Mw of the ethylene/α-olefin/non-conjugated diene B is greater than the Mw of the first composition A; and wherein the composition has a Mooney Viscosity (ML1+4, 100C) from 20 to 100.
摘要:
This invention relates to a compound represented by the formula: T y Cp' m MG n X q wherein: Cp' is a tetrahydroindacenyl group which may be substituted or unsubstituted, provided that when Cp' is tetrahydro- s -indecenyl: 1) the 3 and/or 4 positions are not aryl or substituted aryl, 2) the 3 position is not directly bonded to a group 15 or 16 heteroatom, 3) there are no additional rings fused to the tetrahydroindacenyl ligand, 4) T is not bonded to the 2-position, and 5) the 5, 6, or 7-position is geminally disubstituted; M is a group 3, 4, 5, or 6 transition metal; G is a heteroatom group represented by the formula JR i z where J is N, P, O or S, R i is a C 1 to C 20 hydrocarbyl group, and z is 1 or 2; T is a bridging group; y is 0 or 1; X is a leaving group; m = 1; n = 1, 2 or 3; q = 1, 2 or 3, and the sum of m+n+q is equal to the oxidation state of the transition metal.
摘要翻译:本发明涉及由下式表示的化合物:其中:T为下式所代表的化合物:其中, 其中:Cp'是可以被取代或未被取代的四氢二萘乙炔基,条件是当Cp'是四氢-s-茚基时:1)3和/或4位是 不是芳基或取代的芳基,2)3位不直接键合到15或16杂原子上,3)没有另外的环稠合到四氢二萘嵌苯配体上,4)T不键合到2位上,5 )5位,6位或7位是双基取代的; M是第3,4,5或6族过渡金属; G是由式JR表示的杂原子基团,其中J是N,P,O或S,R 1是C 1 -C 4烷基, C 1至C 20烃基,并且z为1或2; T是一个桥接组; y是0或1; X是离开组; m = 1; n = 1,2或3; q = 1,2或3,并且m + n + q的总和等于过渡金属的氧化态。 p>
摘要:
Provided herein are elastomer blends and membranes including a blend of a propylene-based elastomer a thermoplastic resin, a flame retardant, and an ultraviolet stabilizer.
摘要:
A process for making a branched cyclic olefin copolymer (bCOC), and the bCOC therefrom, comprising combining at a temperature within a range from 60°C to 140°C a catalyst precursor and an activator with a feed comprising ethylene and at least one cyclic olefin; where the catalyst precursor is selected from the group consisting of C s -symmetric Group 4 metallocenes comprising any two ligands selected from cyclopentadienyl and ligands isolobal to the cyclopentadienyl group. The resulting bCOC is desirably semi- crystalline and useful in such articles as tubing, thermoformed and foamed articles.
摘要:
A first ethylene-based interpolymer comprising, in polymerized form, monomer units derived from ethylene and from a benzocyclobutene (VBCB) structure of Structure 1; wherein n is from 3 to 10; and wherein the ethylene-based polymer comprises, in polymerized form, from 0.02 to 0.70 wt% of the Structure 1, based on the weight of the first ethylene-based interpolymer, as determined by 1 H NMR is provided. Further provided is a composition which comprises a second ethylene-based interpolymer formed by thermally treating a first ethylene-based interpolymer.
摘要翻译:第一种乙烯类互聚物以聚合形式包含衍生自乙烯和结构1的苯并环丁烯(VBCB)结构的单体单元; 其中n为3至10; 并且其中所述乙烯类聚合物以聚合形式包含基于通过1 H NMR确定的第一乙烯类互聚物的重量的结构1的0.02-0.70重量%。 还提供了一种组合物,其包括通过热处理第一乙烯类互聚物形成的第二乙烯类互聚物。