Abstract:
A novel solvent-free method for the cationization of a legume starch, and uses of the cationic starches thus obtained, in aqueous compositions and the paper industry, including the folding carton or paper thus obtained.
Abstract:
Disclosed is an adhesive that may include two or more starches or starch derivatives with different molecular weights. In many embodiments, the adhesive includes (1) unmodified or slightly thinned starch, (2) maltodextrin or syrup solid, and (3) a hydroxypropyl starch. In most embodiments, the adhesive includes a plasticizer. The adhesive may be prepared by blending the starch and starch derivatives, and cooking the blended slurry, preferably under acidic conditions. The adhesive may be employed for various purposes including as an adhesive for a multi-wall bag.
Abstract:
Described is a building material composition prepared from or having added thereto a particulate material selected from particulate polysaccharides or particulate polysaccharide derivatives. The particulate material of the building material composition is prepared by a method comprising: (a) forming a feed composition comprising a member selected from the group consisting of polysaccharides and polysaccharide derivatives, and 35 wt. % to 99 wt. % of water, based on the total weight of the feed composition, wherein said member is at least one of swelled and dissolved in the feed composition; (b) contacting, in a mill, the feed composition with a gas stream, thereby converting simultaneously the water of said feed composition into water vapor, and said member of said feed composition into a solid state form of finely particulate material; (c) separating the particulate material from the gas stream; and (d) optionally drying the particulate material. Examples of building material compositions according to the present invention include tile adhesives and joint fillers.
Abstract:
An adhesive for applying to a creping surface in the process for dry creping tissue paper is disclosed. The adhesive comprises cationic starch and optionally a polyvinyl alcohol and a water-soluble, thermosetting, cationic polyamide-epihalohydrin resin. The adhesive provides high adhesion and doctorability for dry creping.
Abstract:
Disclosed are product (e.g., panels), slurry, and methods relating to a pregelatinized starch having a mid-range viscosity (i.e., from about 20 centipoise to about 700 centipoise), and an extruded pregelatinized starch.
Abstract:
The instant invention relates to primary coating compositions that comprises a cationic polysaccharide, to be applied on a hydrophobic surface before a subsequent application of a polar or water based coating composition, such a as a paint or an adhesive.
Abstract:
Disclosed are product (e.g., panels), slurry, and methods relating to a pregelatinized starch having a mid-range viscosity (i.e., from about 20 centipoise to about 700 centipoise), and an extruded pregelatinized starch.
Abstract:
The use of an adhesion-promoting additive combination composed of one or more polyalkylenoxides out of the group comprising polypropylene oxides and ethylene oxide-propylene oxide copolymers, and of one or more starch ether derivatives out of the group comprising carboxyalkyl starch ethers and their alkali salts, and hydroxyalkyl starch ethers, in mortar compositions comprising mineral binders and water-redispersible polymer powders.
Abstract:
AN ETHERIFIED DEPOLYMERIZED STARCH PRODUCT EXHIBITING COMPATIBILITY WITH AQUEOUS POLYVINYL ALCOHOL SOLUTIONS USEFUL FOR SIZE OR ADHESIVE APPLICATION, SAID STARCH PRODUCT CONSISTING ESSENTIALLY OF STARCH CONTAINING -COOX GROUPS, WHEREIN X IS A CATION SELECTED FROM NA+, K+, OR NH4+, IN THE AMOUNT OF 0.3 TO 3% BY WEIGHT BASED ON SAID PRODUCT OF -COONA, OR MOLAR EQUIVALENT OF -COOK OR -COONH4, SAID -COOX GROUPS BEING PRESENT AS STARCH-O-CH2-COOX, OR AS A MIXTURE OF STARCH-O-CH2-COOX AND STARCH-COOX, SAID MIXTURE CONTAINING AT LEAST 0.1% -COONA, OR MOLAR EQUIVALENT OF -COOK OR -COONH4 AS SAID
STARCH-O-CH2-COOX
SAID STARCH PRODUCT BEING FURTHER CHARACTERIZED BY AN ALKALI FLUIDITY OF LESS THAN 95 AND AVOVE 5 AND BY BEING SUBSTANTIALLY FREE OF INORGANIC SALTS. THE CORRESPONDING STARCH-O-CH2CH2-COOX GROUPS CAN BE SUBSTITUTED FOR THE STARCH-O-CH2-COOX GROUPS.
Abstract:
The present disclosure relates to the technical field of building additives, and in particular to a preparation method of modified starch ether for improving the anti-sliding property of a ceramic tile adhesive. The preparation method includes chemical modification of subjecting starch to one-step etherification to obtain starch ether, followed by physical modification. In the preparation method, the cumbersome multi-step etherification in existing methods for preparing modified starch ether is avoided, and only one-step etherification is used to obtain modified starch ether of better properties. Because physical modification is added, the obtained product can significantly improve the anti-sliding property of a ceramic tile adhesive. Moreover, the conditions for one-step etherification are significantly different from the prior art.