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United States Patent | 5,137,655 |
Kosin , et al. | August 11, 1992 |
A high temperature endothermic blowing agent which is a mixture of a polycarboxylic acid and an inorganic carbonate, the 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 polymer and used for producing foamed products.
Inventors: | Kosin; John A. (Bel Air, MD), Mooney; Gerry (West Ajax, CA), Tarquini; Michael A. (Havre de Grace, MD), Garcia; Rod A. (Orange, TX) |
Assignee: |
J. M. Huber Corporation
(Rumson,
NJ)
|
[*] Notice: | The portion of the term of this patent subsequent to April 23, 2008 has been disclaimed. |
Appl. No.: | 07/688,225 |
Filed: | April 22, 1991 |
Application Number | Filing Date | Patent Number | Issue Date | ||
467584 | Jan., 1990 | 5009809 | |||
352307 | May., 1989 | 5009810 | |||
Current U.S. Class: | 516/11 ; 252/183.12; 516/19; 521/145; 521/146; 521/57; 521/76; 521/91; 521/92; 521/97 |
Current International Class: | C08J 9/08 (20060101); C08J 9/00 (20060101); C09K 003/00 () |
Field of Search: | 521/91,57,76,97,92,145,146 252/350,183.12 |
Re26278 | October 1967 | Pottenger |
2008489 | July 1935 | Cousins |
2832744 | April 1958 | Soule et al. |
2912379 | November 1959 | McCracken et al. |
3055846 | September 1962 | Flack et al. |
3350306 | October 1967 | Alletou |
3645931 | February 1972 | Normanton et al. |
3979318 | September 1976 | Tokiwa et al. |
4156039 | May 1979 | Klebe et al. |
4218511 | August 1980 | Hahn et al. |
4614648 | September 1986 | Bru |
4623478 | November 1985 | Pastorino |
5009809 | April 1991 | Kosin et al. |
5009810 | April 1991 | Wason et al. |