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US 4,579,592 AGranted
Insulator
AssigneeGene Crandall
InventorRichard E. Loomis
Life of this patent
Estimating the term…
Abstract
A new and improved insulating composition comprising a mixture of cellulose, boric acid and expanded silicate glass, and having a PH factor preferred in the range of 7 to 7.2, more or less.
Claims20
A thermal insulating composition comprising a mixture of:
- cellulose in an amount by weight of from sixty-five percent (65%) to eighty percent (80%) of total weight, for contributing bulk to the composition.
- boric acid in an amount of from four and one-half percent (4.5%) to twelve percent (12%) of total weight, and
- a glass in an amount of from eight percent (8%) to sixty-five percent (65%) of total weight, for neutralizing the corrosive effect of said acid.
A thermal insulating composition wherein the exact composition is specified by first selecting the precent by weight of cellulose (to the total) desired of from sixty-five percent (65%) to eighty percent (80%),
- then determining the percent by weight of acid (to the total) by multiplying said selected percent by weight of cellulose (to the total) by fifteen percent (15%),
- then determining the percent by weight of glass (to the total) by substracting the sum of said selected percent by weight cellulose and said determined percent by weight acid from one hundred percent (100%).
The thermal insulating compositions of claim 19, wherein the physical consistency of said thermal insulating composition is of a granular state.
Dependencies are inferred from the claim text.