摘要:
A method for preparing poly(butylene terephthalate-co-adipate) copolymer includes reacting (i) poly(butylene terephthalate-co-adipate) oligomers, wherein the oligomers comprise at least one polymer residue derived from a polyethylene terephthalate component and a quencher, with (ii) a chain extender under conditions sufficient to form the poly(butylene terephthalate-co-adipate) copolymer.
摘要:
Provided are: an outdoor urethane adhesive agent which has excellent initial adhesion properties, exhibits excellent adhesion properties after being cured, can be cured into a coating film having excellent flexibility, and preferably has superior weather resistance; a solar cell back sheet which is produced using the adhesive agent; and a solar cell module which is produced using the solar cell back sheet. An outdoor urethane adhesive agent (A) comprising a urethane resin (A) produced by the reaction of an isocyanate compound (a1) with a polyol (a2) having an ester bond, wherein the isocyanate compound (a1) comprises at least one compound selected from aliphatic isocyanates and alicyclic isocyanates, and the polyol (a2) comprises both a polyester polyol (a2-1) and an acrylic polyol (a2-2). The adhesive agent has excellent initial adhesion properties, exhibits excellent adhesion properties after being cured, and can be cured into a coating film. having excellent flexibility. When the adhesive agent additionally contains a hydroxyphenyltriazine-type compound, the adhesive agent can rarely undergo the change in color and can have superior weather resistance.
摘要:
The invention relates to radiation-curable formulations which form flexible coatings with increased corrosion protection on metallic substrates. The invention relates to radiation-curable formulations which provide a significant measure of corrosion protection in the cured state for metallic substrates, and which at the same time are sufficiently flexible to allow deformation.
摘要:
The invention relates to a two-pack poyurethane paint for a backing film, a method for the production thereof and use thereof for application to moulded plastic parts.
摘要:
A polyurethane adhesive for outdoor use that uses a base material and a curing agent, wherein the base material comprises a polyol (A) composed of a polyester polyol and/or polyester polyurethane polyol containing a dibasic acid component comprising 40 to 80 mol% of an aromatic dibasic acid and 20 to 60 mol% of an aliphatic dibasic acid having 9 or more carbon atoms, and a polyhydric alcohol component comprising 20 to 100 mol% of an aliphatic polyhydric alcohol having 5 or more carbon atoms, and the curing agent comprises a polyisocyanate (B) containing an isocyanurate in a weight ratio of 50 to 100%.
摘要:
Substrates, particularly low surface energy substrates, can be bonded using certain solvent-free liquid polyurethane adhesives. The adhesive cures through reaction with moisture and/or an active hydrogen-containing curing agent to form a tough, strong, thermoset polymer having excellent chemical and heat resistance. The adhesive is based on a polyurethane prepolymer obtained by reacting a stoichiometric excess of at least one polyfunctional isocyanate having a functionality of less than 2.2 with at least one polyether polyol and at least one polyester polyol containing isophthalic acid moieties but relatively few if any phthalic acid or terephthalic acid moieties.