公开(公告)号：US20240110024A1

公开(公告)日：2024-04-04

申请号：US18553874

申请日：2022-04-14

申请人： NOVA Chemicals (International) S.A.

发明人： Norman AUBEE ,  Bronwyn GILLON ,  Christian CARELLO ,  Jared TAYLOR ,  Maryam FEREYDOON ,  Shivendra GOYAL ,  Owen LIGHTBODY

IPC分类号： C08J5/18

CPC分类号： C08J5/18 ,  C08J2323/06

摘要： A biaxially oriented polyethylene film structure comprises at least three layers, including a core layer, wherein the core layer comprises: i) from 50 to 99.5 weight percent of a first polyethylene which is an ethylene copolymer having a density of greater than 0.940 g/cm3; and ii) from 0.5 to 50 weight percent of a second polyethylene which is a polyethylene homopolymer composition having a density of at least 0.950 g/cm3; wherein the polyethylene homopolymer composition further comprises a nucleating agent or a mixture of nucleating agents. The biaxially oriented film has very good optical properties.

公开(公告)号：US20220402192A1

公开(公告)日：2022-12-22

申请号：US17770822

申请日：2020-10-19

申请人： NOVA CHEMICALS (INTERNATIONAL) S.A.

发明人： Norman AUBEE ,  Owen LIGHTBODY ,  Maryam FEREYDOON ,  Bronwyn GILLON ,  Patrick LAM ,  Shivendra GOYAL

IPC分类号： B29C55/00 ,  B29C48/00 ,  B29C55/14

摘要： A Biaxially Oriented Polyethylene (BOPE) process uses a selected polyethylene having a medium density and a very broad molecular weight distribution. The use of this selected polyethylene facilitates stretching in the BOPE process in comparison to previously used polyethylene resins having a higher density and/or a narrower molecular weight distribution.

公开(公告)号：US20240228681A1

公开(公告)日：2024-07-11

申请号：US17913803

申请日：2021-03-24

申请人： NOVA CHEMICALS (INTERNATIONAL) S.A.

发明人： Soheil SADEGHI ,  Fazle SIBTAIN ,  Zengrong ZHANG ,  Niousha KAZEMI ,  Monika KLECZEK ,  Vinod KONAGANTI ,  Bronwyn GILLON ,  Shivendra GOYAL ,  Sepideh KASIRI ,  Stephen SALOMONS ,  Kenneth TAYLOR ,  Mehdi KESHTKAR

IPC分类号： C08F210/16 ,  C08F2/06 ,  C08F4/6592 ,  C08J5/18

CPC分类号： C08F210/16 ,  C08F2/06 ,  C08F4/65927 ,  C08J5/18 ,  C08J2323/08

摘要： This disclosure relates to ethylene interpolymer compositions, films prepared therefrom and a nonlinear rheology method capable of determining presence of long-chain branched structures in these ethylene interpolymer compositions. Ethylene interpolymer compositions disclosed herein specifically relates to ethylene interpolymer products having: a dimensionless nonlinear rheology network parameter, Δint., greater than or equal to 0.01, satisfying 0.01×(Z−48)0.78≤Δint≤0.01×(Z−60)0.78 inequality wherein Z is a normalized molecular weight defined by (I) where Mw and Me are the weight average and entanglement molecular weights; and a residual catalytic metal of from ≥0.03 to ≤5 ppm of hafnium. The disclosed ethylene interpolymer products have a melt index from about 0.3 to about 500 dg/minute, a density from about 0.855 to about 0.975 g/cc, a polydispersity, Mw/Mn, from about 1.7 to about 25 and a Composition Distribution Breadth Index (CDBI50) from about 1% to about 98%.

公开(公告)号：US20240182611A1

公开(公告)日：2024-06-06

申请号：US18553875

申请日：2022-04-14

申请人： NOVA Chemicals (International) S.A.

发明人： Norman AUBEE ,  Bronwyn GILLON ,  Christian CARELLO ,  Jared TAYLOR ,  Maryam FEREYDOON ,  Shivendra GOYAL ,  Owen LIGHTBODY

IPC分类号： C08F210/02 ,  C08J5/18

CPC分类号： C08F210/02 ,  C08J5/18 ,  C08J2323/08

摘要： A biaxially oriented polyethylene film structure comprises at least three layers, including a core layer, wherein the core layer comprises: i) from 50 to 99.5 weight percent of a first polyethylene which is an ethylene copolymer having a density of greater than 0.940 g/cm3: and ii) from 0.5 to 50 weight percent of a second polyethylene which is a polyethylene homopolymer composition having a density of at least 0.950 g/cm3: wherein the polyethylene homopolymer composition further comprises a nucleating agent or a mixture of nucleating agents. The biaxially oriented film has very good optical properties.