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United States Patent | RE35,239 |
Wason , et al. | May 14, 1996 |
A stabilized powdered endothermic blowing agent .[.which.]. is a mixture or a polycarboxylic acid and an inorganic carbonate, .[.and.]. .Iadd.the .Iaddend.polycarboxylic acid and inorganic carbonate each having been surface treated with a component which prevents water from being absorbed thereby. The blowing agent is incorporated into a polymeric concentrate used for producing foamed products.
Inventors: | Wason; Satish K. (Bel Air, MD), Mooney; Gerry (Ajax, CA), Andrews; Claude R. (Pasadena, MD), Tarquini; Michael E. (Havre de Grace, MD), Kosin; John A. (Timonium, MD), Garcia; Rod A. (Montgomery, TX) |
Assignee: |
J.M. Huber Corporation
(Rumson,
NJ)
|
Appl. No.: | 08/376,972 |
Filed: | January 23, 1995 |
Application Number | Filing Date | Patent Number | Issue Date | ||
Reissue of: | 352307 | May., 1989 | 05009810 | Apr., 1991 | |
Current U.S. Class: | 516/10 ; 252/183.12; 521/56; 521/57; 521/59; 521/60; 521/76; 521/92; 521/93; 521/97 |
Current International Class: | C08J 9/00 (20060101); C08J 9/08 (20060101); C08K 003/00 () |
Field of Search: | 252/350,183.12 521/56,57,59,60,76,92,93,97 |
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