The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jun. 27, 2017
Filed:
Dec. 22, 2014
Applicant:
Bpb Limited, London, GB;
Inventors:
Agnes Smith, Limoges, FR;
Thierry Chotard, Limoges, FR;
Cyrielle S. Dupas, Sarlat la Canede, FR;
Ian Paul Wilkes, Staffordshire, GB;
Assignee:
BPB Limited, , GB;
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
C04B 11/00 (2006.01); B32B 13/08 (2006.01); C04B 28/14 (2006.01); B28B 19/00 (2006.01); C08K 5/00 (2006.01); C04B 111/00 (2006.01);
U.S. Cl.
CPC ...
C04B 11/00 (2013.01); B28B 19/0015 (2013.01); B28B 19/0092 (2013.01); B32B 13/08 (2013.01); C04B 28/14 (2013.01); C04B 28/147 (2013.01); C08K 5/0025 (2013.01); B32B 2250/03 (2013.01); B32B 2419/00 (2013.01); B32B 2607/02 (2013.01); C04B 2111/0062 (2013.01); Y10T 428/31971 (2015.04); Y10T 428/31996 (2015.04);
Abstract
The formulation for making plasterboard with paper cover sheets comprises finely divided gypsum, a minor amount by weight of starch and, as crosslinking agent for the starch, a tri-functional reactive s-triazine having substituents at positions 2, 4 and 6 of the triazine ring which are reactive with the starch. A preferred crosslinking agent is 2,4,6-trichloro-s-triazine, which is preferably partially reacted with the starch before further reaction with the paper cover sheets for the plaster board.