摘要:
Embodiments of the invention provide for polyurethane-based sealants. The sealants include a reaction product of a reaction system which includes at least one isocyanate, and at least one polyester polyol. The polyester polyol includes a reaction product of a polyester reaction mixture which includes one or more hydrophobic monomers, one or more organic diacids or methyl esters thereof, and one or more diols.
摘要:
A process comprising a) mixing i) an isocyanate reactive component that contains from 2 to 100 weight percent of an aminobenzoate terminated composition wherein the isocyanate reactive component does not contain a solvent; and ii) an isocyanate terminated component having an isocyanate functionality of from 2 to 6 wherein the isocyanate terminated component does not contain a solvent; at a stoichiometric ratio of NCO to reactive hydrogen in the range of from 0.9 to 2.5; to form an adhesive composition; b) applying the adhesive composition to a primary substrate; and c) laminating the primary substrate with a secondary film to form a laminate structure, is disclosed. The laminate structure can be used as a laminating adhesive.
摘要:
Embodiments of the invention provide for polyurethane-based sealants. The sealants include a reaction product of a reaction system which includes at least one isocyanate, and at least one polyester polyol. The polyester polyol includes a reaction product of a polyester reaction mixture which includes one or more hydrophobic monomers, one or more organic diacids or methyl esters thereof, and one or more diols.
摘要:
A process comprising a) mixing i) an isocyanate reactive component that contains from 2 to 100 weight percent of an aminobenzoate terminated composition wherein the isocyanate reactive component does not contain a solvent; and ii) an isocyanate terminated component having an isocyanate functionality of from 2 to 6 wherein the isocyanate terminated component does not contain a solvent; at a stoichiometric ratio of NCO to reactive hydrogen in the range of from 0.9 to 2.5; to form an adhesive composition; b) applying the adhesive composition to a primary substrate; and c) laminating the primary substrate with a secondary film to form a laminate structure, is disclosed. The laminate structure can be used as a laminating adhesive.
摘要:
Polyesters and polyol formulations comprising polyesters used in the preparation of polyisocyanurate rigid foams with improved green strength properties are provided. In some embodiments, a polyester which is the reaction product of (a) an aromatic component comprising 80 mole percent or greater of terephthalic acid, (b) at least one polyether polyol having a nominal functionality of 2, a molecular weight of 150 to 1,000 and a polyoxyethylene content of at least 70% by weight of the polyether polyol, (c) at least one glycol different than (b) having a nominal functionality of 2 and a molecular weight from 60 to 250, and (d) at least one polyol having a molecular weight of 60 to 250 and a nominal functionality of at least 3, wherein (a), (b), (c), and (d) are present in the reaction on a percent weight basis of 20 to 60 weight percent of (a), 20 to 50 weight percent of (b), 10 to 30 weight percent of (c), and 5 to 20 weight percent of (d) is provided.