Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Novartis AG
Original Assignee
Ciba Geigy AG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Ciba Geigy AGfiledCriticalCiba Geigy AG
Publication of ES8505435A1publicationCriticalpatent/ES8505435A1/en
Publication of ES522759A0publicationCriticalpatent/ES522759A0/en
Paper or card is sized by adding to an aq. fibre suspension contg. cellulose and opt. fillers, at least (A) a sizing agent contg. at least 1 anionic or acid gp., opt. in salt form, and at least 2 hydrophobic gps. (X), each with at least 5C; at least 1 X has at least 8C, and at least 2 adjacent X are linked by a bridging gp. with at least 1C and 2 hetero-atoms; and (B) a polymeric, cationic retention agent. The size dispersions are stable, and compatible with fillers and brighteners. Small amts. of (A) and (B) give paper with good mechanical properties. Suspensions contg. wood pulp or waste paper fibre can be processed.
ES522759A1982-05-281983-05-27
PROCEDURE FOR THE MANUFACTURE OF PAPER OR MOLDED BOARD.
GrantedES522759A0
(en)