D - Textiles – Paper – 21 – H
Patent
D - Textiles, Paper
21
H
400/1300, 6/93
D21H 17/29 (2006.01) D21H 17/15 (2006.01) D21H 21/16 (2006.01)
Patent
CA 1325315
ABSTRACT OF THE DISCLOSURE The present invention relates to a novel sizing composition in the form of an aqueous emulsion comprising a hydrophobic cellulose reactive sizing agent and a cationic polymer comprising a starch, the novel features of said composition being that the starch possesses a combination of (A) a branched, high molecular weight structure as reflected by an amylopectin content of at least 85% and (B) a degree of substitution of about 0.045 to 0.40. Such sizing compositions can be prepared by dissolving the aforementioned starch in water, adjusting the temperature to above the melting point of the sizing agent and adding the sizing agent to the solution so as to form a coarse emulsion, which is subsequently subjected to shear forces to reduce the particle size of the emulsion. The invention also relates to a method of preparing sized paper or paperboard by using the above- mentioned sizing composition. Also, the invention relates to the sized paper for paperboard prepared by said method. Such paper products show reduction in liquid absorbency as compared to products using conventional sizing agents, reduced consumption of optical highteners, and enhanced development of sizing.
603435
Blixt Tony
Hakansson Philip
Betzdearborn Inc.
Gowling Lafleur Henderson Llp
LandOfFree
Sizing composition, a method for the preparation thereof and... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Sizing composition, a method for the preparation thereof and..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Sizing composition, a method for the preparation thereof and... will most certainly appreciate the feedback.
Profile ID: LFCA-PAI-O-1327515