100% solids polyurethanes having improved physical properties in terms of Shore hardness, tear strength, elongation at break and/or tensile strength are realized through the introduction of 100% solids hydroxyl-functional acrylics in combination with the hydroxyl-functional polyether and 100% solids isocyanate-functional compounds. When an aromatic isocyanate is used, the isocyanate-reactive component includes from 5 to 70% by weight of a hydroxyl-functional polyether having a weight average molecular weight ranging from 180 to 6,500 g/mol, and 30 to 95% by weight of a hydroxyl-functional acrylic. When an aliphatic isocyanate is used, the isocyanate-reactive component includes from 40 to 70% by weight of a hydroxyl-functional polyether having a weight average molecular weight ranging from 180 to 6,500 g/mol, and 30 to 60% by weight of a hydroxyl-functional acrylic.

A polyurethane composition including, on the basis of the total weight of the composition: A) 20-50 weight % of a polyurethane prepolymer PU, which is a reaction product of a polyether polyol with at least two aromatic polyisocyanates or mixture of the reaction products, wherein the polyether polyol includes a polyether diol and a polyether triol, and the weight ratio of the polyether triol to the polyether diol ranges from 4:1 to 13:1; and B) 12.5% to 17.5% of carbon black on the basis of the total weight of the composition. Also, the use of carbon black in polyurethane compositions for reducing blistering during curing and increasing matte effect.

These vinyl-based polymerizable group-containing silane compounds may be used alone, or two or more thereof may be used in combination. The content of the vinyl-based polymerizable group-containing silane compound is 1% by mass or more and 10% by mass or less, and preferably 1% by mass or more and 5% by mass or less, in 100% by mass of the organosiloxane mixture. When the amount of the vinyl-based polymerizable group-containing silane compound is the lower limit value or more, the peeling force and impact resistance of the obtained cured product tend to be high. When the amount of the vinyl-based polymerizable group-containing silane compound is the upper limit value or less, the peeling force and impact resistance of the obtained cured product tend to be high.

The present invention provides water-soluble or water-dispersible polyester resins prepared by depolymerizing a terephthalate plastic material in an alcoholysis/glycolysis reaction, and re-polymerizing the product by reacting with a polybasic acid and/or anhydride. The polyester resins of the invention contain 70% to 95% by weight of the terephthalate material, based on the total weight of the composition. The polyester resins of the present invention are useful as dispersants, for example in pigment preparations, and as binders in let-down varnishes, inks, coatings, etc, and as adhesion promoters in aqueous-based inks.

Disclosed are adhesive compositions comprising a polyester polyol that includes residues of 1,4-cyclohexanedimethanol. Adhesive compositions as described herein exhibit enhanced properties over conventional adhesive compositions, and may be suitable for a wide variety of applications, including, flexible packaging, woodworking, automotive, and electronics.

Adhesive compositions comprise a polyester polyol that includes residues of at least one 2,2,4,4-tetraalkylcyclobutan e-1,3-diol, including, for example, 2,2,4,4-tetramethylcyclobutane-1,3-diol (TMCD). Adhesive compositions as described herein exhibit enhanced properties as compared to conventional adhesive compositions, and may be suitable for a wide variety of end use applications, including, flexible packaging, woodworking, automotive uses, and electronics.

The invention relates to an anti-fatigue cold mixed epoxy resin material, preparation method and application thereof, comprising component A and component B with mass ratio of 1:1-10:1, component A comprising fluid epoxy resin, active toughener, active diluents, coupling agent and defoamer; component B is any one of or a mixture of two or more than two of alicyclic amine or amino terminated polyether, cyanoethylamine, phenolic modified amine or hydroxyalkyl modified amine. Introduced epoxy terminated organosilicon block polyurethane prepolymer breaks the limitation that elongation at fracture of epoxy resin system based on “sea-island structure” is difficult to break through 100%. The invention is suitable for bridge deck pavement of long-span cable bearing bridge, waterproof bonding material or used for airport pavement, municipal viaduct, ramp and other occasions with high requirements for fatigue resistance of pavement material.

This invention relates to a heat and humidity resistant adhesive composition, comprising a first part comprising at least one ethylenically unsaturated monomer; a second part comprising at least one initiator; and at least one blocked isocyanate compound comprised in the first part, the second part and/or a third separate part. The adhesive composition exhibits excellent aging performance under rigorous conditions.

Hydroxyacetal or hydroxyketal monomers, processes for their preparation, their use to produce degradable polymers, hydroxy-functional intermediates resulting from degradation, and repurposed polymers made from the hydroxy-functional intermediates are described. The invention avoids the energy-intensive conditions normally used to degrade polyurethanes and generates new hydroxy-functional intermediates that can be repurposed or upcycled. Polyurethanes and melamines, materials once destined for a landfill, can have a second life. Incorporation of a photoacid generator into microcapsule core materials and fabrication of the shell from the hydroxy-functional acetal or ketal monomers promotes facile, inside-out, solid-state degradation of the microcapsule shell triggered by UV light and acid generation in a hydrophobic environment. This enables controlled release of flavors, fragrances, biocides, agricultural actives, or other oil-based beneficial agents from within the microcapsules.

The invention is directed to a biodegradable tissue-adhesive polyurethane polymer comprising at least one amorphous segment and at least one polyurethane segment, wherein at least one of said polyurethane segment comprises a tissue-reactive functional group. A further aspect of the invention is directed to biodegradable tissue-adhesive medical devices, based on the polyurethane polymer, having the structure of a sheet, foam, stent, tube or gel. The polyurethane polymer and the device can be used in medical application.