摘要:
Polysaccharide graft copolymers are prepared by a water-in-oil emulsion polymerization process in which the polysaccharide and water-soluble monomer are emulsified in an oil phase containing emulsifying agents and polymerized therein. The resultant emulsion polymers are in stable form and may be used directly, for example, as adhesives for prepasted wallpaper, or may be inverted into aqueous systems and used for their thickening or flocculating properties.
摘要:
A water-soluble pressure-sensitive adhesive composition is described containing a polymerization product obtained by the solution polymerization of a water-soluble ethylenically unsaturated monomer in the presence of an alcoholic plasticizer having a molecular weight of less than about 3,000 and which is a liquid at room temperature, selected from the group consisting of polyether polyols and polyhydric alcohols, wherein the polymerization product contains as a polymer component at least an addition copolymer of the water-soluble ethylenically unsaturated monomer and the alcoholic plasticizer.
摘要:
A pre-mixed adhesive composition comprised of a vinyl acetate polymer emulsion including a cross-linking catalyst and a cross-linking inhibitor providing a good cured water resistant Type II bond and extended shelf life so that the adhesive composition will not gel over an extended period of time and will therefore be usable for direct gluing application to semi-porous and porous substrates.
摘要:
A laminated film which comprises a film substrate, an adhesive undercoat of a carboxylated ethylene copolymer composition prepared by copolymerizing a monomer mixture of an Alpha , Beta -unsaturated carboxylic acid or anhydride and at least one vinylidene monomer of the formula CH2 CXY where X and Y are the same or different and each represents hydrogen, chlorine, a lower alkyl containing 1-6 carbon atoms, acetoxy, or a carboxylic ester group in the presence of an ethylene-vinylacetate copolymer applied to said film substrate, and a top film of a polyolefin or ethylene copolymer applied to said adhesive undercoat.
摘要:
The disclosure relates to a process for preparing an adhesive, a novel adhesive, a novel polymeric material and a process for preparing extremely stable emulsions. The process of the invention comprises subjecting an aqueous mixture of starch or protein, or at least two insoluble substances, and grinding media to an agitation in the presence of a pigment, if desired, and then removing the grinding media therefrom. The treated starch or protein may be further reacted with a polymerizable monomer or preformed polymer to form the novel polymeric material. A superior adhesive, which finds particular application in coating base materials, as paper, is obtained. Stable emulsions formed are particularly useful in pharmaceutical and food applications.
摘要:
Adhesive compositions for effecting adhesion between an ethylene-vinyl acetate copolymer and a solid material comprising (A) a grafted product obtained by reacting an ethylene-vinyl acetate copolymer or a derivative thereof with a carboxylic acid or its anhydride having a conjugated double bond in the molecule and (B) a compound having epoxide group.
摘要:
A tissue adhesive material that provides fast and robust adhesion even on tissue surfaces covered in bodily fluids. The tissue adhesive material is formed of a hydrophobic matrix and a plurality of bioadhesive microparticles dispersed within the hydrophobic matrix configured such that disposing the adhesive material directly on a fluid covered surface and applying pressure causes the (a) hydrophobic matrix to repel the fluid, (b) the bioadhesive particles to compress forming an adhesive layer, and (c) the bioadhesive particles to form temporary crosslinks followed by covalent crosslinks with the surface.
摘要:
An ultraviolet curable resin composition having: a monomer and/or an oligomer having a polymerizable unsaturated double bond; a photopolymerization initiator; a polymerization inhibitor; and an acid having an acid dissociation constant (pKa1) in pure water of 4.0 or less.