Ammonio methacrylate copolymers are commercially available as Eudragit RL/RS; they differ in the degree of quaternary ammonium group substitution, which gives them different permeabilities. These closely related polymers can be combined in various ratios to control release rate; consequently, releas
✦ LIBER ✦
PART II || No. I. APPLICATION OF PLUMBAGO TO NON-CONDUCTING SUBSTANCES FOR THE PRODUCTION OF VOLTATYPES
✍ Scribed by W. A. Graham, Robert Murray, William Thomas Brande, J. H. Daniell and George Fownes
- Book ID
- 124019759
- Year
- 1840-1841
- Weight
- 523 KB
- Volume
- 53
- Category
- Article
- ISSN
- 2049-7873
- DOI
- 10.2307/41325921
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