Joint cement compositions containing mica and quaternary compounds
asbestos-free joint cement compositions are disclosed comprised of a binder, mica, calcium carbonate, a thickener, and a specified quaternary ammonium compound.It has been conventional to replace asbestos with attapulgite clay to provide the body and anti-sagging properties usually associated with asbestos. Attapulgite, however, must be employed at levels which give rise to a severe cracking problem. The interaction of the quaternary compound with the mica gives the formulations sufficient body that the attapulgite and its attendant cracking problem can be substantially eliminated.
Latest Hercules Incorporated Patents:
- Polysaccharide products with improved performance and clarity in phosphate ester surfactant-based aqueous formulations and process for preparation
- HIGH TEMPERATURE AND HIGH PRESSURE CEMENT RETARDER COMPOSITION AND USE THEREOF
- METHOD OF STRENGTHENING HAIR FIBERS AND PROTECTING DYED HAIR COLOR FROM FADING OR WASH-OUT
- PHARMACEUTICAL COMPOSITIONS WITH ENHANCED PERFORMANCE AND IMPROVED PROCESSABILITY
- OIL AND GAS TREATMENT COMPOSITION COMPRISING HYDROXYETHYL CELLULOSE AND CROSSLINKED POLYVINYLPYRROLIDONE
Description
Patent History
Patent number: T977003
Type: Grant
Filed: May 22, 1978
Date of Patent: Dec 5, 1978
Assignee: Hercules Incorporated (Wilmington, DE)
Inventor: Armand J. Desmarais (New Castle, DE)
Application Number: 5/908,493
Type: Grant
Filed: May 22, 1978
Date of Patent: Dec 5, 1978
Assignee: Hercules Incorporated (Wilmington, DE)
Inventor: Armand J. Desmarais (New Castle, DE)
Application Number: 5/908,493
Classifications
Current U.S. Class:
260/17R;
106/141;
106/169;
260/174ST
International Classification: C08L 128; C08L 302;
International Classification: C08L 128; C08L 302;
