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US 4,065,281 AGranted
Production of amber glass
AssigneeResearch-Cottrell, Inc.
InventorRobert Edward Byrne
Life of this patent
Estimating the term…
Abstract
Amber glass is made by melting a soda-lime glass-forming batch in which at least 1 percent of the silica content is provided by lignite fly ash.
Claims1
A method of producing amber soda-lime glass by a fusion process of
- Sand:
- 22.8
- Soda Ash:
- 8.0
- Potassium Carbonate:
- 2.3
- Sodium Nitrate:
- 2.1
- Lime:
- 3.0
- Feldspar:
- 1.6
- Borax:
- 0.5
- Antimony:
- 0.1
- plus iron oxide Fe.sub.2 O.sub.3 to the desired color, the improvement comprising substituting at least one percent of the silica content of the sand, lime and feldspar of the batch with lignite fly ash.
14 more elements
Dependencies are inferred from the claim text.