Abstract:
Disclosed are compositions and methods directed to environmentally friendly, starch-based adhesives with improved properties and adhesive additives which improve the properties of existing starch-based adhesives. Some embodiments are directed to compositions comprising: a starchbased cross-linked phenolic heteropolymer; a plurality of antimicrobial agents covalently bound to the starch-based cross-linked phenolic heteropolymer; and a plurality of sugar units covalently bound to the starch-based cross-linked phenolic heteropolymer. Some embodiments are directed to modified starch-based adhesives comprising: a starch-based adhesive and an additive, the additive consisting of a starch-based composition comprising a starch-based cross-linked phenolic heteropolymer; a plurality of antimicrobial agents covalently bound to the starch-based cross-linked phenolic heteropolymer; and a plurality of sugar units covalently bound to the starch-based crosslinked phenolic heteropolymer.
Abstract:
An environmentally friendly, formaldehyde-free, aqueous binder composition that includes a carbohydrate, a crosslinking agent, and a pre-reacted product of an alcohol or polyol and monomeric or polymeric polycarboxylic acid or polyglycerol is provided. The pre-reacted product may include glycerol and esters of citric acid such a monoglyceryl citrate, diglyceryl citrate, and triglyceryl citrate as well as other higher molecular weight citric acid-based esters. The inclusion of the pre-reacted product in the binder composition helps to speed the crosslinking reaction, induces faster water evaporation, decreases the viscosity of the binder, helps to reduce the amount of water needed for application of the binder, decreases tackiness, and helps to achieve a maximum vertical expansion of the insulation pack in the transfer zone. The binder composition may be used in the formation of insulation materials and non-woven chopped strand mats.
Abstract:
An adhesive composition and a method of producing the same. According to the present invention, a first adhesive component which comprises polyphenol and another adhesive component which comprises a starch derivative, are dissolved or dispersed in water. The polyphenol and the starch derivative are added into the water at a weight ratio which is approximately 1:50...50:1, in which case the quantities of polyphenol and starch derivative added are such that the dry matter percentage of the adhesive composition is at least 40 % by weight. The composition according to the present invention is particularly suitable for gluing of fibrous, such as laminated or veneer-based products.
Abstract:
This invention relates to protein-polymer conjugates described in the specification. Also disclosed are a method for preparing a protein-polymer conjugate and using such a conjugate in treating various immune disorders.
Abstract:
Environmentally friendly biopolymer adhesives are described, wherein the adhesives comprise biopolymer particles, more preferably starch microparticles, and most preferably starch nanoparticles, and their aqueous dispersions. Applications for the biopolymer particle adhesives are described, that are environmentally friendly alternatives to petroleum based synthetic adhesives. The biopolymer particle adhesives provide are biodegradable as well as repulpable, and thus provide bio-based recycling-friendly alternatives to synthetic adhesives derived from petroleum resources.
Abstract:
A novel adhesive composition for paper and cardboard is described, which contains a cationic polysaccharide esterified by a dicarboxylic acid anhydride, characterised in that said dicarboxylic acid anhydride is substituted by a saturated or unsaturated, branched carbon chain. The anhydride may for example be tetrapropenylsuccinic anhydride or any isomer thereof. The adhesive composition of the invention may contain an oxidising agent such as a persulphate. It can advantageously be used for coating printing and/or writing paper, particularly envelope paper and paper for non-impact printing, such as ink jet printing.
Abstract:
The invention relates to a process for producing an adhesive for bonding layers of paper in which an adhesive concentrate is first diluted to 1:10 and then reacted with an activating reagent, especially a base. In addition, the invention relates to an adhesive concentrate which can be used in the production of such an adhesive. The adhesive concentrate contains a polyhydroxy component or polyvinyl ester compound and a thickening agent, especially an acrylic acid polymer. By addition to the diluted adhesive concentrate of a base, the thickening agent is neutralised and becomes active, whereby the viscosity of the adhesive is set and can be adapted to each use. The process of the invention is economical and provides an adhesive with variable viscosity, solid body content and adhesive power. It is used especially in the production of tissue paper layers, particularly domestic and toilet paper.
Abstract:
An adhesive formulation for paper is disclosed, comprising a first polymer obtained by polymerization of monomers including (a) a vinyl aromatic monomer, (b) a diene monomer, a (meth)acrylate monomer, or combinations thereof, and (c) a carbohydrate derived compound having a dextrose equivalent (DE) of about 10 to about 35; and a second polymer obtained by polymerization of monomers including at least 50% by weight of a vinyl formamide monomer. Methods of making the formulation, using it with paper, and paper bonded with the formulation are also disclosed.
Abstract:
An environmentally friendly, bio-based binder system that is useful for the formation of fiberglass insulation, the system includes: A) an aqueous curable binder composition, which includes a carbohydrate and a crosslinking agent; and B) a dedust composition, which includes a blown, stripped plant-based oil and optionally at least one emulsifying agent. The bio-based binder system is typically heated to form a cured binder system.
Abstract:
The invention relates to an adhesive system comprising - a protein; - a polymer comprising at least one carboxylic group or at least one carboxylic anhydride group, or a combination thereof, with the proviso that said polymer does not contain 5 to 90 wt-% of vinyl pivalate units in combination with 0.2 to 15 wt-% of primary hydroxyl group-containing vinyl compound units, and - a polyamine-epihalohydrin. The invention further relates to the use of the adhesive system, an adhesive composition, a method of producing a wood based product and a wood based product.