Abstract:
The invention relates to a substrate intended in use to contact a fouling agent, the substrate including a coating comprising polysaccharide, which coating serves to reduce or prevent fouling of the substrate caused by contact from the fouling agent, in comparison to an equivalent uncoated substrate. The invention also relates to the anti -fouling coating, to apparatus comprising such coating and to related methods of reducing or preventing fouling of a substrate intended in use to contact a fouling agent.
Abstract:
Disclosed are antifouling compositions that can include a biopolymeric matrix which is substantially zwitterionic. The compositions may include a biopolymer matrix having positively charged functional groups, negatively charged functional groups, zwitterionic functional groups, or a combination thereof, such that the composition is substantially zwitterionic. The compositions can be used as additives and as compositions further containing a base material such as paint or lacquer. Methods of making and using such compounds and compositions are also disclosed.
Abstract:
The present invention relates to afilm or coating for preventing migration of substances from paper or board containing recycled fibers, wherein said film or coating is a polymeric film or coating comprising hemicellulose, wherein said film or coating is arranged to form a migration barrier layer with a thickness equal to or less than 50 µm, preferably less than 20 µm, preferably less than 15µm, preferably between 2 -15 µm, even more preferred between 5 –10 µm.
Abstract:
A film forming composition and a polymeric film or coating comprising hemicellulose and at least one component selected from the group consisting of plasticizers, cellulose, and an oligomer or polymer, is disclosed, said polymeric film or coating further comprising at least one additive/reactant increasing the liquid/moisture resistance and mixed with and/or reacting with the hemicellulose and said at least one component before or in conjunction with the forming of the film or coating. The use of said film or coating is also disclosed. Further, a method for the manufacture of said polymeric film or coating is disclosed, as well as a method for improving the liquid/moisture resistance of hemicellulose. Said at least one additive/reactant increasing the liquid/moisture resistance is either a cross-linking agent or a hydrophobizing agent. In another preferred embodiment the additive is a 2: 1 layered phyllosilicate. The additive forms a nanocomposite with the hemicellulose as a matrix. The hemicellulose/phyllosilicate nanocomposite reinforced material provides excellent liquid/moisture resistance. Heat treatment of all of the films increases their liquid/moisture resistance and reduces their oxygen permeability.
Abstract:
A film forming composition and a polymeric film or coating comprising hemicellulose and at least one component selected from the group consisting of plasticizers, cellulose, and an oligomer or polymer, is disclosed, said polymeric film or coating further comprising at least one additive/reactant increasing the liquid/moisture resistance and mixed with and/or reacting with the hemicellulose and said at least one component before or in conjunction with the forming of the film or coating. The use of said film or coating is also disclosed. Further, a method for the manufacture of said polymeric film or coating is disclosed, as well as a method for improving the liquid/moisture resistance of hemicellulose. Said at least one additive/reactant increasing the liquid/moisture resistance is either a cross-linking agent or a hydrophobizing agent. In another preferred embodiment the additive is a 2: 1 layered phyllosilicate. The additive forms a nanocomposite with the hemicellulose as a matrix. The hemicellulose/phyllosilicate nanocomposite reinforced material provides excellent liquid/moisture resistance. Heat treatment of all of the films increases their liquid/moisture resistance and reduces their oxygen permeability.
Abstract:
This invention relates to a water soluble lamination adhesive comprising 8 to 35% by weight of a natural resin such as Kordufan gum (gum arabic) in a proportion of 50 to 80% water by weight, to which is added additives such as humectant, colloid modifier, fluidifier, plasticiser, stabilizer and catalyst wherein plasticisers are upto 1 to 4% by weight from the. compounds sodium chloride, calcium chloride, sodium Nitrate; humectants acting as plasticisers also are upto 1 to 25% by weight from the compounds of ethylene glycol, diethylene glycol, glycerin, glucose, sorbitol, polyethylene glycol; colloid modifiers acting also as fluidifier and plasticiser upto 1 to 5% by weight from the compounds of Urea and Dimethylol Urea; stabilizer upto 0.05 to 1% by weight from the compounds of methyl paraben and ethyl paraben and catalyst upto 0.5% to 5% by weight from the compounds of salicylic acid, tartaric acid and aluminium sulphate .
Abstract:
A film-forming composition and a polymeric film or coating comprising hemicellulose, having a molecular weight of less than 50 000 g/mol, and at least one component selected from the group consisting of plasticizers, cellulose and a synthetic oligomer or polymer is disclosed. The use of said film or coating as an oxygen barrier is also disclosed. Further, a method for the manufacture of said polymeric film or coating is disclosed, as well as a method for improving the film-forming properties of hemicellulose having a molecular weight of less than 50 000 g/mol.
Abstract:
A flexible coating composition of hard ceramic particles, a binder and a polymer, and a method of making the same are disclosed. The coating composition can withstand an animal attack with pressures >/= 22,000 psi.
Abstract:
The present invention relates to films comprising a xyloglucan comprising not more than 11 mol% galactose residues, as well as a method for making such films, and its use as an oxygen barrier.
Abstract:
Embodiments described herein include capped nanoparticles having a nanoparticle core and at least one capping agent including a biochemical constituent of wood or a woody plant or a derivative thereof functionally associated to the nanoparticle core. Some embodiments provide for wood products and wood treatment compositions including such capped nanoparticles, and methods for preparing and using such capped nanoparticles to produce treated wood or treated wood products.