Extrusion coating composition
AssigneeDow Global Technologies LLC
InventorsThomas Oswald, Wayde V. Konze, Mehmet Demirors
Life of this patent
Estimating the term…
Abstract
Multimodal polyethylene compositions are provided. Extrusion compositions including the multimodal polyethylene are provided. The extrusion composition further include a high pressure low density polyethylene and optionally other additives and/or polyethylenes. Extruded articles made from the polyethylene extrusion compositions are also provided.
Claims9
A polyethylene resin characterized by:
- a. Mw(abs)/Mw(RI)>1.05 and <1.6;
- b. Mz(measured)/Mz(calc)>1.4 and <3.0 where Mz(calc) is calculated from the measured I2 according to Mz(calc)=1.5*10(5.077−0.284*log 10(I2));
- c. I2>8.0 g/10 minutes and <15.0 g/10 minutes;
- d. CDF(RI fraction)>0.01 at a log 10(Mw) of 5.5;
- and
- e. density in the range 0.860-0.965 g/cc.
An extrusion composition comprising from 80% to 98% a multimodal polyethylene and 2% to 20% LDPE wherein the multimodal polyethylene is characterized by:
- a. Mw(abs)/Mw(RI)>1.05 and <1.6;
- b. Mz(measured)/Mz(calc)>1.4 and <3.0 where Mz(calc) is calculated from the measured I2according to Mz(calc)=1.5*10(5.077−0.284*log 10(I2));
- C. I2>8.0 g/10 minutes and <15.0 g/10 minutes;
- d. CDF(RI fraction)>0.01 at a log 10(Mw) of 5.5;
- and
- e. density in the range 0.860-0.965 g/cc;
- and
- the LDPE is characterized by having a I2 less than 10 g/10 minutes and greater than 0.2 g/10 minutes, and a Mw(abs)/Mw(RI)>2.0.
An article comprising at least one layer of an ethylene polymer extrusion composition, wherein the extrusion composition comprises from 80% to 98% multimodal polyethylene and 2% to 20% LDPE wherein the multimodal polyethylene is characterized by:
- a. Mw(abs)/Mw(RI)>1.05 and <1.6;
- b. Wz(measured)/Mz(calc)>1.4 and <3.0 where Mz(calc) is calculated from the measured I2 according to Mz(calc)=1.5*10(5.077−0.284*log 10(I2));
- c. I2>8.0 g/10 minutes and <15.0 g/10 minutes;
- d. CDF(RI fraction)>0.01 at a log 10(Mw) of 5.5;
- and
- e. density in the range 0.860-0.965 g/cc;
- and
- the LDPE is characterized by having a I2 less than 10 g/10 minutes and greater than 0.2 g/10 minutes, and a Mw(abs)/Mw(RI)>2.0.
Dependencies are inferred from the claim text.