Antacids for polymers
US11643481B2 · kind B2 · utility
0Cited by
15References
25Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 1, 2019 |
| Grant date | May 9, 2023 |
| Priority date | — |
| Expiry date | Nov 27, 2039 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08K2201/005
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
The present invention provides polymer compositions having improved corrosivity, color stability and clarity. Also disclosed is a process of preparing the polymers. The process may comprise incorporating into the polymer an acid neutralizing amount of an amorphous aluminum silicate. The amorphous aluminum silicate may be present in the polymer in an amount such that the polymer composition having a Corrosivity Index of less than 6. A refractive index of the amorphous aluminum silicate may be the same or substantially the same as a refractive index of the polymer.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.