The present invention provides a two-component solvent free polyurethane adhesive composition, comprising: (A) a OH-containing component, and (B) an NCO-containing component; wherein the mass ratio between the OH-containing component (A) and the NCO-containing component (B) is greater than 1:1, and the molar ratio between the OH group in the component (A) and the NCO group in the component (B) is less than 1:1.

The present invention relates to a semi-crystalline mixture of polyester polyols which recrystallises upon melting and which can be obtained by polycondensing a reaction mixture comprising one or more dicarboxylic acids selected from saturated aliphatic dicarboxylic acids having an even number of at least 8 methylene groups, and one or more diols selected from aliphatic diols which have at least one ether function. The invention also relates to a polymeric material which is obtained from the chemical modification of the mixture of polyester polyols with organic compounds which contain at least one isocyonate group and/or epoxide group. The mixtures and materials according to the invention are characterised by relatively low melting enthalpies, while the melting temperature can be set in a range of −30 to 60° C., meaning that it is possible to obtain easily fusible formulations containing the mixtures and materials according to the invention. The mixtures and materials according to the invention also provide such formulations with a high elasticity and breaking resistance. The present invention therefore includes the use of the polyester polyols and polymeric materials according to the invention as deforming, fusing, and extrusion means in thermoplastic materials, and the use thereof for producing adhesives and sealants, in particular hot-melt adhesives and reactive adhesives.

Inkjet inks are described herein. In an example, an inkjet ink can comprise: at least one colorant; at least one solvent comprising glycerol in an amount of from about 1 wt % to about 20 wt % based on the total weight of the inkjet ink; water; and at least one binder, wherein the binder comprises a polyurethane-based binder dispersion.

The present invention provides a moisture-curable polyurethane hot-melt resin composition containing an isocyanate group-containing urethane prepolymer (i), where the moisture-curable polyurethane hot-melt resin composition further contains a curing catalyst (ii) represented by General Formula (1) below in an amount in a range of 0.2 to 1 parts by mass with respect to 100 parts by mass of the urethane prepolymer (i) and an organic acid (iii) having a sulfur atom in an amount in a range of 0.0001 to 0.5 parts by mass with respect to 100 parts by mass of the urethane prepolymer (i). The present invention also provides an article including at least two members bonded using the moisture-curable polyurethane hot-melt resin composition.

This invention provides a process for manufacturing high performance polyester polyols with high proportion of renewable content derived from biological sources. The polyester polyols with high content of renewable biological materials produced according to the present invention display no color or odor issues and are used in the manufacture of two component polyurethanes, thermoplastic urethanes, polyurethane dispersions and polyester and polyester/urethane acrylates with outstanding physical properties.

A coated product includes two or more coated layers, in which a degree of interface roughness Ra between a first layer in the coated film layer and a second layer in contact with the first layer is 1 m to 10 m.

The present invention provides a release agent for a reactive hot melt resin, wherein a dispersion term (D) in the Hansen solubility parameters falls within the range of 14.0 to 21.0 MPa.sup.0.5, a dipole interaction force term (P) falls within the range of 0 to 10.5 MPa.sup.0.5, and a hydrogen bond term (H) falls within the range of 0 to 13.5 MPa.sup.0.5. Preferably, the adhesive for a reactive hot melt resin is at least one type of solvent selected from a group consisting of benzoic acid esters, tetrahydrofurfuryl alcohol, and tetrahydrofurfuryl (meth)acrylate. The reactive hot melt resin preferably contains an urethane prepolymer having an isocyanate group, and the urethane bond content in the urethane prepolymer is preferably within the range of 0.1 to 3 mol/kg.

The present invention relates to a semi-crystalline mixture of polyester polyols which recrystallises upon melting and which can be obtained by polycondensing a reaction mixture comprising one or more dicarboxylic acids selected from saturated aliphatic dicarboxylic acids having an even number of at least 8 methylene groups, and one or more diols selected from aliphatic diols which have at least one ether function. The invention also relates to a polymeric material which is obtained from the chemical modification of the mixture of polyester polyols with organic compounds which contain at least one isocyonate group and/or epoxide group. The mixtures and materials according to the invention are characterised by relatively low melting enthalpies, while the melting temperature can be set in a range of 30 to 60 C., meaning that it is possible to obtain easily fusible formulations containing the mixtures and materials according to the invention. The mixtures and materials according to the invention also provide such formulations with a high elasticity and breaking resistance. The present invention therefore includes the use of the polyester polyols and polymeric materials according to the invention as deforming, fusing, and extrusion means in thermoplastic materials, and the use thereof for producing adhesives and sealants, in particular hot-melt adhesives and reactive adhesives.

A polycarbonate diol is provided. The polycarbonate diol includes repeating units represented by formula (A) and formula (B), and hydroxyl groups located at both ends of the polycarbonate diol. The molar ratio of formula (A) to formula (B) is in a range from 1:99 to 99:1.

##STR00001##

R.sub.1 is a linear, branched or cyclic C.sub.2-20 alkylene group. R.sub.2 is a linear or branched C.sub.2-10 alkylene group; m and n are independently and can be an integer from 0 to 10, and m+n1. A is a C.sub.2-20 alicyclic hydrocarbon, aromatic ring or a structure represented by formula (C).

##STR00002##

R.sub.3 and R.sub.4 are independently and can be a hydrogen atom or a C.sub.1-6 alkyl group; S is 0 or 1; and Z is selected from

##STR00003##

R.sub.5 and R.sub.6 are independently and can be a hydrogen atom or a C.sub.1-12 hydrocarbon group.

Inkjet inks are described herein. In an example, an inkjet ink can comprise: at least one colorant; at least one solvent comprising glycerol in an amount of from about 1 wt % to about 20 wt % based on the total weight of the inkjet ink; water; and at least one binder, wherein the binder comprises a polyurethane-based binder dispersion.