Abstract: The difficulties in using clay minerals as absorbents in articles such as diapers, floor mats, utility wiping cloths, etc. is overcome by flocculating the clay into granular aggregates. The dry aggregates are dispersed into a flexible fibrous support to prepare the absorbent products. The aggregates, additionally, show enhanced water absorbing properties in many instances.
Type:
Grant
Filed:
September 16, 1974
Date of Patent:
January 27, 1976
Assignee:
The Dow Chemical Company
Inventors:
Nelson D. Burkholder, Ralph L. Wisner, Dudley A. Taber
Abstract: Thermosettable vinyl ester resins which provide improved flexibility and abrasion resistance are prepared by reacting a polyepoxide with a dicarboxylic acid half ester of a monomer having the formula ##EQU1## where R is H or methyl, R.sub.1 is a two to four carbon alkylene group, R.sub.2 is H, methyl or ethyl and n has an average value of 3 to 6.
Abstract: Copolymers containing from 5 to 25 mole percent of anhydride, such as maleic anhydride, have improved, thermally induced reversible cross-linking characteristics when the crosslinking agent is selected from certain hydroxyl containing derivatives of bisphenol A.
Type:
Grant
Filed:
April 2, 1971
Date of Patent:
January 20, 1976
Assignee:
The Dow Chemical Company
Inventors:
Robert M. Nowak, Kenneth J. Guilette, Eugene R. Moore
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