Resin compositions and use of the same
US6414088B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 30, 2000 |
| Grant date | Jul 2, 2002 |
| Priority date | — |
| Expiry date | Jun 30, 2020 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08L2314/06
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
The resin composition of the invention is a composition which includes 100 parts by weight of a polyethylene resin (A) and 2 to 5,000 parts by weight of a linear ethylene/a-olefin random copolymer (B) which includes ethylene and an a-olefin of 6 to 20 carbon atoms, wherein the polyethylene resin (A) has (a) MFR (ASTM D 1238, 190° C., load of 2.16 kg) of 0.1 to 200 g/10 min and (b) a density of 0.901 to 0.970 g/cm3; and the copolymer (B) has (a) a density of 0.870 to 0.900 g/cm3, (b) an intrinsic viscosity (&eegr;), as measured in decalin at 135° C., of 0.3 to 3.0 dl/g, (c) a glass transition temperature (Tg) of not higher than −50° C., (d) a crystallinity, as measured by X-ray diffractometry, of less than 40%, (e) a molecular weight distribution (Mw/Mn), as measured by GPC, of not more than 3.0, (f) a B value, as determined by the 13C-NMR spectrum and a specific equation, of 1.0 to 1.4, and (g) a ratio g&eegr;* of more than 0.95 (g&eegr;*=(&eegr;)/(&eegr;)blank/ (&eegr;): intrinsic viscosity of this copolymer determined in the property (b), (&eegr;)blank: intrinsic viscosity of a linear ethylene/propylene copolymer having the same weight-average molecular weight (…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.