Propylene resin composition, process for the preparation thereof, and use thereof
US6268063A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Aug 25, 1999 |
| Grant date | Jul 31, 2001 |
| Priority date | — |
| Expiry date | Aug 25, 2019 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/31909
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
A propylene resin composition featuring good flexibility and transparency without producing sticky feeling, and comprising a polypropylene component and a copolymer component of propylene and ethylene, wherein (I) the amount of the component (hereinafter referred to as medium- to low-temperature eluting component) that elutes out at temperatures of up to 90.degree. C. by the temperature rising elution fractionation method by using an o-dichlorobenzene solvent is from 50 to 99% by weight of the whole amount, the amount of the component (hereinafter referred to as high-temperature eluting component) that elutes out at temperatures of not lower than 90.degree. C. is from 50 to 1% by weight of the whole amount, and the amount of the component (hereinafter referred to as low-temperature eluting component) eluting out up to a temperature of 0.degree. C. is not larger than 10% by weight of the whole amount, and (II) the content of the ethylene units in the component eluting up to the temperature of 90.degree. C. is not smaller than 4% by weight but is smaller than 20% by weight, and the content of the propylene units in the component eluting at temperatures of not lower than 90.degree. C.…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.