The present invention pertains to a polyurethane fluoropolymer [polymer (F.sub.p)] obtainable by reacting: (i) at least one fluoropolymer [polymer (F)] comprising one or more recurring units derived from at least one (meth)acrylic monomer [monomer (MA)] having formula (I) here below: wherein: R.sub.1, R.sub.2 and R.sub.3, equal to or different from each other, are independently selected from a hydrogen atom and a C.sub.1-C.sub.3 hydrocarbon group, R.sub.H is a C.sub.1-C.sub.10 hydrocarbon group comprising from 1 to 5 hydroxyl groups, x being an integer comprised between 1 and 5, and, optionally, comprising one or more functional groups selected from double bonds, epoxy, ester, ether and carboxylic acid groups, with (ii) at least one isocyanate compound comprising at least one isocyanate functional group [compound (I)], (iii) optionally in the presence of one or more chain extenders, said polyurethane fluoropolymer [polymer (F.sub.p)] comprising at least one bridging group having formula (a) here below: wherein: R.sub.H is a C.sub.1-C.sub.5 hydrocarbon group comprising from 1 to 5 urethane moieties, x being an integer comprised between 1 and 5, and, optionally, comprising one or more functional groups selected from double bonds, epoxy, ester, ether and carboxylic acid groups. The invention also pertains to a process for the manufacture of said polymer (F.sub.p) and to uses of said polymer (F.sub.p). ##STR00001##

The present invention provides an aqueous polyurethane dispersion (PUD) comprising an amorphous polyester having a glass transition temperature (T.sub.g) as determined by differential scanning calorimetry of less than 30 C.; wherein the aqueous polyurethane dispersion (PUD) has a glass transition temperature (T.sub.g) as determined by differential scanning calorimetry (DSC) of 0 C. to 20 C. and a hard block content of greater than 50%. Coatings, adhesives, sealants, paints, primers and topcoats, made from the inventive aqueous polyurethane dispersion (PUD) pass detergent resistance testing according to the American Architectural Manufacturers Association's standard, AAMA 615-13, have a pencil hardness according to ASTM D3363 of at least 3H, and are particularly suited for use on low surface energy substrates such as vinyl and other surfaces including floors, windows, doors, window frames, door frames, window shutters, railing, gates, pillars, arbors, pergolas, trellises, gazebos, posts, fencing, pipes and fittings, wire and cable insulation, automobile components, credit cards, and siding.

An internally emulsified polyurethane dispersion, which is prepared by using a combined chain extender system of a hydrophilic amino siloxane compound and a polyetheramine compound, is provided. The internally emulsified polyurethane dispersion can be used to prepare a synthetic leather product having good anti-stickiness, wrinkle resistance, color fastness and superior mechanical properties. A laminated synthetic leather article prepared with said internally emulsified polyurethane dispersion as well a method for preparing the synthetic leather article are also provided.

The present invention provides a polishing pad whose crosslinking density is adjusted to enhance the performance of the CMP process such as polishing rate and cut pad rate, in addition, in the process for preparing a polishing pad according to the embodiment, it is possible to implement such a crosslinking density by a simple method of controlling the preheating temperature of the mold for curing, Thus, the polishing pad may be applied to a process of preparing a semiconductor device, which comprises a CMP process, to provide a semiconductor device such as a wafer of excellent quality.

Controlled release polyurea microcapsules can be prepared from a combination of polyisocyanates using emulsion polymerization. Encapsulated catalysts prepared using the polyurea microcapsules can be used to control the cure rate of coatings and sealants.

Described herein is a two-component polyurethane adhesive that exhibits a glass transition temperature (Tg) of 70 C. and an open time in the range of 45 to 90 minutes at a temperature of 70 C. and a relative humidity of 50%. Also described is a method of producing the two-component polyurethane adhesive having a long open time with good humidity tolerance which is suitable for bonding large and bulky components or surfaces, including but not limited to, rotor blades of wind turbines.

A polymer comprising at least 1% by mole of a structural unit represented by Formula (2). In Formula (2), two R.sup.1s are the same or different from each other and are each a hydrogen atom or an alkyl group having 1 to 6 carbon atoms; X is a single bond, an oxygen atom, or a group represented by COO, OOC, CONH, NH, NHCO, NR.sup.3, or CH.sub.2O; Y is a single bond or an oligooxyalkylene group; two R.sup.2s are the same or different from each other and are each an alkyl group having 1 to 6 carbon atoms; R.sup.3 is an alkyl group having 1 to 6 carbon atoms; m is an integer of 1 to 10; and n is an integer of 2 to 10) and having a number average molecular weight of 5,000 or more has various characteristics suitable for use in contact with a living organism and can be easily produced.

Controlled release polyurea microcapsules can be prepared from a combination of polyisocyanates using emulsion polymerization. Encapsulated catalysts prepared using the polyurea microcapsules can be used to control the cure rate of coatings and sealants.

A two-part curable adhesive composition includes a main agent (A) containing a urethane prepolymer (a1) and a remaining polyisocyanate (a2), and a curing agent (B) containing a non-crystalline polyol compound (b1) and a polyamine compound (b2). An equivalent ratio of an isocyanate group in a raw polyisocyanate to a hydroxyl group in the polyol compound is from 2.05 to 12. The equivalent ratio of the isocyanate group in the main agent (A) to an amino group in the polyamine compound (b2) is from 1.2 to 6. The equivalent ratio of the isocyanate group in the main agent (A) to the hydroxyl group in the non-crystalline polyol compound (b1) is from 2 to 12.

A two-part curable adhesive composition includes a main agent (A) containing a urethane prepolymer (a1) and a remaining polyisocyanate (a2), and a curing agent (B) containing a non-crystalline polyol compound (b1) and a polyamine compound (b2). An equivalent ratio of an isocyanate group in a raw polyisocyanate to a hydroxyl group in the polyol compound is from 2.05 to 12. The equivalent ratio of the isocyanate group in the main agent (A) to an amino group in the polyamine compound (b2) is from 1.2 to 6. The equivalent ratio of the isocyanate group in the main agent (A) to the hydroxyl group in the non-crystalline polyol compound (b1) is from 2 to 12.