Calendered rigid vinyl polymer compositions
US5414035A · kind A · utility
4Cited by
10References
20Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 1, 1994 |
| Grant date | May 9, 1995 |
| Priority date | — |
| Expiry date | Jul 1, 2014 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08L23/06
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
The present invention provides an external lubricant composition for calendered vinyl polymer. The external lubricant provides rigid vinyl polymer compositions having improved plate out resistance, clarity, release, and stability. The external lubricant comprises an effective amount for lubricating vinyl polymer of polyethylene having a Brookfield viscosity at a temperature of 150.degree. C. of greater than about 85,000 centipoises and an acid number as determined by standardized titration of KOH of between about 5 and about 9. Sheets of the calendered vinyl polymer are used for blister packs and credit cards.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.