Liquid lubricating and stabilizing compositions for rigid vinyl halide resins and use of same
US4719022A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | May 14, 1987 |
| Grant date | Jan 12, 1988 |
| Priority date | — |
| Expiry date | May 14, 2007 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC10N2060/04
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
Oils derived essentially from petroleum and which are liquids at ambient room temperature and meet a certain molecular weight/percent paraffin content parameter may be used as the only necessary external lubricants for rigid vinyl halide resin compositions when said oils are added to the resin compositions in sufficient quantity to permit satisfactory molding and extrusion of the resulting resin compositions. Such oils may also be employed to form liquid lubricating and stabilizing compositions for rigid vinyl halide resin formulations which lubricating and stabilizing compositions are liquids at ambient room temperature or at temperature of about 50.degree. C. or less. Rigid resin compositions containing such oils and/or liquid lubricating and stabilizing compositions are readily prepared and easily processed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.