The present invention provides an optical composition from which an optical article having reduced poor appearance such as cloudiness and optical strain during lens base material production can be obtained, and when a photochromic compound is added, a photochromic cured body having excellent photochromism and mechanical strength can also be formed, and a polyrotaxane used therefor. The polyrotaxane has a composite molecular structure formed of an axle molecule and a plurality of cyclic molecules clathrating the axle molecule, satisfying at least one of (X) and (Y). (X): A side chain having a secondary or tertiary hydroxyl group is introduced into at least part of the cyclic molecule of the polyrotaxane. (Y): A side chain having a group represented by -A (A is an organic group, and contains at least one hydroxyl group) is introduced into at least part of the cyclic molecule of the polyrotaxane, and a pKa of the hydroxyl group of the compound represented by H-A is 6 or more and less than 14.

An object of the present invention is to provide a novel rotaxane and a polyurethane using the same. The present invention provides a rotaxane having a crown ether and a chain molecule piercing through the cyclic structure of the crown ether, wherein a hydroxyl group exists at one terminal of the chain molecule, and a hydroxyl group bonds to the cyclic structure of the crown ether. The present invention further provides a polyurethane using the rotaxane as a polyol component.

An object of the present invention is to provide a novel rotaxane and a polyurethane using the same. The present invention provides a rotaxane having a crown ether and a chain molecule piercing through the cyclic structure of the crown ether, wherein a hydroxyl group exists at one terminal of the chain molecule, and a hydroxyl group bonds to the cyclic structure of the crown ether. The present invention further provides a polyurethane using the rotaxane as a polyol component.

A method of manufacturing a semiconductor device, includes forming a sacrificial film made of a polymer having a urea bond on a substrate by supplying an amine and an isocyanate to a surface of the substrate, wherein the sacrificial film is provided in a specific region of the substrate; performing a predetermined process on the substrate on which the sacrificial film is formed; and removing the sacrificial film by heating the substrate to depolymerize the polymer, wherein a carbon bonded to a nitrogen atom contained in an isocyanate group of the isocyanate is a secondary or tertiary non-aromatic carbon.

An organic-inorganic hybrid material is disclosure. The organic-inorganic hybrid material contains 5˜50 wt % of inorganic compounds and has a characteristic peak at 1050±50 cm.sup.−1 in FTIR spectrum. Furthermore, the invention also provides a fabricating process of the organic-inorganic hybrid material as well as its starting material “isocyanates”. In particular, the isocyanates are prepared from carbonate containing compounds and amines.

A graphene-modified elastomer material and its preparation method. The elastomer material comprises a first component and a second component; the first component comprises isocyanate prepolymer obtained through reaction of polyol and isocyanate, and the isocyanate prepolymer has a —NCO content of 22-30%; the second component comprises the following components in parts by weight: 60-90 parts of polyetheramine, 1-10 parts of liquid amine chain extender, 1-5 parts of polytetrahydrofuran ether polyol, and 1-5 parts of graphenes. Through adjusting the —NCO content of the isocyanate prepolymer, increasing the hard segment content, and combining with the components in the second component, the invention ensures the elasticity of the polymer while improving its mechanical properties such as hardness and bending strength.

The present invention relates to a urea group containing product comprising one or more species of formula (I) R.sup.1—X—(C═O)—[NH—R.sup.2—NH—(C═O)—NH—R.sup.3—NH—(C═O)].sub.n—NH—R.sup.2—NH—(C═O)—X—R.sup.1 (I), 5 wherein R.sup.1 is independently selected from organic groups having (4) to (200) carbon atoms, X is O or NR.sup.4, wherein R.sup.4 is a hydrogen atom or an aliphatic or aromatic group having (1) to (30) carbon atoms, R.sup.2 is independently selected from hydrocarbyl groups having (4) to (40) carbon atoms, R.sup.3 is independently selected from hydrocarbyl groups having (2) to (40) carbon atoms, and wherein on average (76) to (100) mol % of all R.sup.3 groups contained in the one or more species of formula (I) are hydrocarbyl groups having (2) or (3) carbon atoms, and n is an integer of (2) to (150). The invention further relates to a method of manufacturing such urea group containing products, liquid compositions containing the same and the use of such liquid compositions as rheology control additives. Furthermore, the invention relates to a process for rheology adjustment adding such liquid composition to semi-finished or final products. The invention also relates to an article coated with the liquid composition.

The present invention relates to a urea group containing product comprising one or more species of formula (I) R.sup.1—X—(C═O)—[NH—R.sup.2—NH—(C═O)—NH—R.sup.3—NH—(C═O)].sub.n—NH—R.sup.2—NH—(C═O)—X—R.sup.1 (I), 5 wherein R.sup.1 is independently selected from organic groups having (4) to (200) carbon atoms, X is O or NR.sup.4, wherein R.sup.4 is a hydrogen atom or an aliphatic or aromatic group having (1) to (30) carbon atoms, R.sup.2 is independently selected from hydrocarbyl groups having (4) to (40) carbon atoms, R.sup.3 is independently selected from hydrocarbyl groups having (2) to (40) carbon atoms, and wherein on average (76) to (100) mol % of all R.sup.3 groups contained in the one or more species of formula (I) are hydrocarbyl groups having (2) or (3) carbon atoms, and n is an integer of (2) to (150). The invention further relates to a method of manufacturing such urea group containing products, liquid compositions containing the same and the use of such liquid compositions as rheology control additives. Furthermore, the invention relates to a process for rheology adjustment adding such liquid composition to semi-finished or final products. The invention also relates to an article coated with the liquid composition.

A substrate at least partially coated with an anti-fingerprint coating is prepared from a coating composition that includes: (a) an organic solvent; and (b) an alkoxysilane functional polymer having at least one ester linkage, at least one urethane linkage, and at least one alkoxysilane functional group. Further, the polymer is prepared from components including: (i) an active hydrogen functional compound having a hydroxyl group, amino group, thiol group, or a combination thereof; (ii) an intramolecular cyclic ester; and (iii) an isocyanate functional compound. The isocyanate functional compound (iii) has one or more alkoxysilane functional groups. Alkoxysilane functional polymers and coating compositions containing the same are also included.

A laminating adhesive composition for use in producing a laminate structure for retort applications including a mixture of: (A) at least one isocyanate component as Component A; and (B) at least one isocyanate-reactive component as Component B; wherein the at least one isocyanate-reactive component, Component B, comprises (Bi) at least one silyl polymer, and (Bii) at least one polyol compound; and a laminate structure made using the above laminating adhesive composition.