The present disclosure provides a process for forming a laminate. The process includes (A) uniformly applying an isocyanate component to a first substrate, the isocyanate component containing an isocyanate compound; (B) uniformly applying an isocyanate-reactive component to a second substrate, the isocyanate-reactive component containing an amine-terminated compound; (C) bringing the first substrate and the second substrate together, thereby mixing and reacting the isocyanate component and the isocyanate-reactive component to form an adhesive composition between the first substrate and the second substrate; (D) curing the adhesive composition to bond the first substrate and the second substrate; and (E) forming the laminate.

A method of preparing a self-healing composition is disclosed, the method including following steps. An isocyanate solution, a dihydric alcohol solution, and a metal salt solution are provided. The dihydric alcohol has heterocyclic structures. The isocyanate solution and the dihydric alcohol solution are mixed, causing the isocyanate and the dihydric alcohol polymerize to form a polymer precursor. The polymer precursor includes a hard segment and a soft segment. The hard segment includes urethane groups, the soft segment includes heterocyclic structures. The polymer precursor and the metal salt solution are mixed, causing the heterocyclic structures and metal ions to undergo a chelation reaction to form a coordination complex, thereby forming the self-healing composition. A self-healing composition prepared by the method, and self-healing film using the self-healing composition are also disclosed.

Low-friction fluorinated coatings are disclosed herein. A preferred low-friction material contains a low-surface-energy fluoropolymer having a surface energy between about 5 mJ/m.sup.2 to about 50 mJ/m.sup.2, and a hygroscopic material that is covalently connected to the fluoropolymer in a triblock copolymer, such as PEG-PFPE-PEG. The material forms a lubricating surface layer in the presence of humidity. An exemplary copolymer comprises fluoropolymers with average molecular weight from 500 g/mol to 20,000 g/mol, wherein the fluoropolymers are (α,ω)-hydroxyl-terminated and/or (α,ω)-amine-terminated, and wherein the fluoropolymers are present in the triblock structure T-(CH.sub.2—CH.sub.2—O)—CH.sub.2—CF.sub.2—O—(CF.sub.2—CF.sub.2—O).sub.m(CF.sub.2—O).sub.n—CF.sub.2—CH.sub.2—(O—CH.sub.2—CH.sub.2).sub.p-T where T is a hydroxyl or amine terminal group, p=1 to 50, m=1 to 100, and n=1 to 100. The copolymer also contains isocyanate species and polyol or polyamine chain extenders or crosslinkers possessing a functionality of preferably 3 or greater. These durable, solvent-resistant, and transparent coatings reduce insect debris following impact.

A process for producing rigid PUR/PIR foams via the reaction of a reaction mixture comprising A1 an isocyanate-reactive component, A2 a flame retardant, A3 a blowing agent, A4 a catalyst, and A5 optionally auxiliaries and additives with B an organic polyisocyanate component. Component A1 comprises a diurethane diol A1.1 and a compound A1.2 selected from the group consisting of polyether polyol, polyester polyol, polyether carbonate polyol, and polyether ester polyol. Also disclosed is a rigid PUR/PIR foam, an insulating material, a composite element, and a mixture.

The present invention relates to a phosphorus containing polyol, obtainable or obtained by a process comprising the reaction of at least one polyol with a phosphorus containing compound of the general formula (I) as defined herein, as well as the process for preparing a phosphorus containing polyol, comprising the reaction of at least one polyol with a phosphorus containing compound of the general formula (I). Furthermore, the present invention relates to the use of a phosphorus containing polyol as disclosed herein as a flame retardant, to a process for the preparation of a polyurethane and the polyurethane as such. ##STR00001##

Solvent-based adhesive compositions are disclosed herein. In some embodiments, the solvent-based adhesive compositions include (A) an isocyanate component comprising an isocyanate curing agent and (B) a hydroxyl component comprising a polyester polyol, a polyether polyol, and a phosphate ester compound. The isocyanate curing agent of the isocyanate component (A) crosslinks the components of the hydroxyl component. In some embodiments, the phosphate ester compound has the structure (I): (I) wherein R1 is any organic group. Methods for preparing solvent-based adhesive compositions are also disclosed. The methods include providing an isocyanate component (A) comprising an isocyanate curing agent, providing a hydroxyl component (B) comprising a polyol blend, comprising a polyester polyol and a polyether polyol, and a phosphate ester compound, curing the hydroxyl component (B) with the isocyanate component (A) at a mix ratio ((A):(B), by weight) of from 100:8 to 100:15, thereby forming the solvent-based adhesive composition. ##STR00001##

A polymerizable composition for optical materials of the present invention contains (A) a polyisocyanate compound, (B) a polythiol compound, (C) a photochromic compound, (D) a polyether compound having a number-average molecular weight of 50 to 10,000, and (E) a polyether-modified siloxane compound having a viscosity of 1 mPa.Math.s or more and less than 1,600 mPa.Math.s.

The present invention discloses a polyurethane-based photochromic resin lens and a preparation method thereof. The lens includes the following ingredients: 100 weight parts of polyurethane monomers, 0.01-0.1 weight part of an initiator, 0.1-10 weight parts of an additive and 0.01-0.2 weight part of color changing powder, wherein the additive is a molecular weight modifier. The photochromic resin lens of the present invention uses a polyurethane base to realize substrate color change, the impact-resistant strength is high, a photochromic effect is good, a visible light transmittance of the lens after hard coating can reach about 93%, and after the deepest color change depth is reached under ultraviolet irradiation, the visible light transmittance is only 15-25%.

A self-restoring polyurethane-based polymer obtained by polymerization of a composition containing an aromatic disulfide diol represented by Chemical Formula, HO—Ar.sub.1—S—S—Ar.sub.2—OH, an alicyclic polyisocyanate, and a polyol. Ar.sub.1 and Ar.sub.2 each are independently a substituted or unsubstituted C.sub.6-C.sub.30 arylene group. The composition satisfies Equation, 0.1≤M.sub.[disulfide]/M.sub.[OH]. M.sub.[disulfide] is a total mole number of the aromatic disulfide diol in the composition, and M.sub.[OH] is a total mole number of the aromatic disulfide diol and the polyol in the composition.

A process for producing a polymerizable composition for optical materials of the present invention includes a step A of mixing together a polyisocyanate compound (i), a polymer (ii) represented by General Formula (ii), a photochromic compound (iii), and an internal release agent (iv), a step B of mixing a mixed solution obtained by the step A with a polythiol compound (v), and a step C of further mixing a mixed solution obtained by the step B with a polymerization catalyst (vi) so as to obtain a polymerizable composition for optical materials, wherein in the step A, the internal release agent (iv) is added so that a content thereof in the polymerizable composition for optical materials is 500 to 3,000 ppm, and in the step C, the polymerization catalyst (vi) is added so that a content thereof in the polymerizable composition for optical materials is 120 to 500 ppm.

R.sub.1A.sub.1—R.sub.2—A.sub.2—R.sub.3].sub.n  (ii)