Chemical additive for gypsum products
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Sep 15, 2015
Grant Date -
Jan 8, 2015
app pub date -
Dec 3, 2012
filing date -
Dec 3, 2012
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
The present invention provides a gypsum composition, a gypsum board and their preparation method and the use of DHA as an anti-sagging additive in a gypsum product. Said gypsum board comprises set gypsum prepared from the composition; while said composition comprises gypsum, and an anti-deformation additive, wherein the anti-deformation additive comprises at least one selected from a group consisting of dehydroascorbic acid, dehydroascorbate and semidehydroascorbic acid. The set gypsum prepared from the said composition shows better anti-sagging or deformation resisting property. The gypsum product of the present invention is hardly distorted and has stronger stability even in the condition of high humidity, thus improve the quality of the gypsum product to meet the demands of the customer.
First Claim
Other Claims data not available
Family
International Classification(s)
- 2012 Application Filing Year
- C04B Class
- 940 Applications Filed
- 840 Patents Issued To-Date
- 89.37 % Issued To-Date
Cited Art Landscape
Patent Citation Ranking
- 1 Citation Count
- C04B Class
- 16.97 % this patent is cited more than
- 10 Age
Maintenance Fees
| Fee | Large entity fee | small entity fee | micro entity fee | due date |
|---|---|---|---|---|
| 11.5 Year Payment | $7400.00 | $3700.00 | $1850.00 | Mar 15, 2027 |
