Compositions – Preservative agents – Anti-oxidants or chemical change inhibitants
Patent
1978-11-20
1980-09-02
Konopka, P. E.
Compositions
Preservative agents
Anti-oxidants or chemical change inhibitants
252430, 264 54, 264 83, 264109, 264122, B01J 3106, B01J 2118, B01J 2104, B01J 2108
Patent
active
042205530
ABSTRACT:
A filter-drier block for use in refrigeration systems to filter and remove moisture from the refrigerant fluid, and the method of making the blocks. The block is comprised of granular adsorbent material bound together to form a rigid block by the use of phenolic resin and polyisocyanate binders and characterized by a low pressure drop for fluid passing through the block. The method of making the block includes the steps of mixing dry adsorbent granules with solutions of the two binders, blow molding the mixture into a block, curing the resins with an alkaline gas, purging the block of the gas by passing air through the block, and heating the block to drive off the solvents for the binders. The invention also includes a refrigeration system utilizing the block.
REFERENCES:
patent: 3238056 (1966-03-01), Pall et al.
patent: 3538020 (1970-11-01), Heskett et al.
patent: 3813347 (1974-05-01), Hayes
patent: 3851026 (1974-11-01), Heskett et al.
patent: 4072649 (1978-02-01), Kubens
patent: 4079031 (1978-03-01), Sardessai et al.
Baker James A.
Konopka P. E.
Parker-Hannifin Corporation
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