Polymer composition imparting low surface energy
US5110667A · kind A · utility
10Cited by
8References
11Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 26, 1990 |
| Grant date | May 5, 1992 |
| Priority date | — |
| Expiry date | Mar 26, 2010 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/31938
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
Polymer blend useful in making release liners, especially for reflective sheeting, comprises: PA0 A. a matrix polymer (e.g., a polyolefin); PA0 B. a filler such as CaCO.sub.3 ; PA0 C. a fluorocarbon, such as a 2-oxazolidinone compound. Typical proportions are: polypropylene 54.5%, CaCO.sub.3 45%, and fluorochemical oxazolidinone 0.5%. Liners made of this composition can be used both in the process of manufacturing reflective sheeting and as release liners on finished product, thus combining process and product liner into one. They can also be used as a slip sheet in bonding reflective sheeting to sign blanks or substrates.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.