摘要:
A paint replacement film comprising a polymer layer comprising a polyurethane produced from a formulation comprising at least one blocked isocyanate. The paint replacement film comprises a liner layer and the formulation comprises at least two polyols in OH weight equivalent ratio in the range 4.5:1 to 1:4.5. The formulation may comprise a colourant and the polyurethane may have a glass transition temperature (Tg) below 42° C. Also disclosed is a method of producing a paint replacement film, by providing a backing layer, providing the liquid formulation, cast-coating the backing layer with the liquid formulation, and gelling the liquid formulation, thereby forming a polymer layer comprising polyurethane. The paint replacement films are useful for replacing paint on surfaces especially in automotive applications.
摘要:
A manufacturing method for printed circuit boards includes the steps of: a) inkjet printing a UV free radical curable inkjet ink on a substrate (2); b) UV curing the UV free radical curable inkjet ink on the inkjet printed substrate; and c) applying a thermal treatment on the UV cured inkjet printed substrate; wherein the UV free radical curable inkjet ink contains at least a colorant, a free radical photoinitiator; a difunctional monomer or oligomer and a polyfunctional monomer or oligomer; and 1 to 15 wt % of a silane compound according to Formula (I): wherein, the linking group L represents a —CH2— group or an aliphatic chain having 2 to 10 carbon atoms optionally substituted in the aliphatic chain by a nitrogen or an oxygen; R1 represents a methoxy group; R2 and R3 independently represent a methoxy group or a C1- to C4-alkyl group; and R4 represents a functional group selected from the group consisting of an epoxy group, an amine group, a carbamate group, a trimethoxy silane group and an ureido group.
摘要:
The subject matter is a new curable composition comprising at least one hydroxyl-group containing resin, at least one nitroso-containing compound or at least one nitroso precursor compound, at least one hydrophopic silica and at least one blocked isocyanate, which provides excellent adhesion and steam resistance for rubber to substrate bonds, a process for bonding two substrates with this new curable composition and the corresponding article.
摘要:
The present technology is an epoxy resin composition containing an epoxy resin (A), a urethane resin (B) in which the terminal isocyanate of the urethane prepolymer is blocked by at least one of an ε-polycaprolactam, an oxime, or a pyrazole, and in which bisphenol A is included in the backbone of the aforementioned urethane prepolymer, and a curing agent (C).
摘要:
A two-coat coating system for producing a two-coat coating, comprising (A) a composition of a transparent radiation-curable or radiation-curable and thermally curable clearcoat material, comprising at least one hydroxy-functional binder, and (B) a pigmented coating composition, the pigmented coating composition comprising at least one blocked, water-soluble or water-dispersible isocyanate.
摘要:
Blocked polyisocyanates, obtained by using a polyisocyanate derived from an aliphatic and/or an alicyclic diisocyanate monomer, as a precursor, and including both of a blocked isocyanate group blocked with a pyrazole compound and a cationic group neutralized with an anion, in one molecule thereof; methods for making and using such blocked polyisocyanates; and compositions of matter including such blocked polyisocyanates.
摘要:
The invention relates to addition compounds and their salts, characterized in that the addition compounds are obtainable by reacting (a) one or more polyisocyanates having at least two isocyanate groups per molecule with (b) one or more compounds of the formula Y—(XH)n and (c) one or more compounds from the group consisting of (c1) compounds M-Q, (c2) a blocking agent for isocyanate groups, and (c3) optionally compounds of the general formula Z-Q. The invention further relates to the preparation of the addition compounds and to their use as dispersants, wetting agents and dispersion stabilizers, and also to solids coated with the addition compounds.
摘要:
Described herein is a mixture comprising: a non-self-crosslinking polymer; and a modifying compound comprising at least two different functional groups. The first functional group of the modifying compound is capable of reacting with the non-self-crosslinking polymer and the second functional group is capable of crosslinking with a curing agent. Also, described are compositions, curable polymeric compositions, articles using such curable polymeric compositions, and methods of making cured polymeric compositions.
摘要:
Polyurethane coating compositions that provide transparent, abrasion-resistant, and water-washable anti-fog coatings when applied to a substrate and cured are described herein. These polyurethane coating compositions have surfactants that are chemically associated with the polyurethane so as to not leach out or wash away when the coating surface is soaked or washed with water. The polyurethane coating compositions comprise isocyanate-reactive surfactants, isocyanate-reactive salts of surfactants, carboxylic-reactive surfactants, or combinations thereof that are chemically bonded to the polyurethane. Articles coated with such polyurethane coating compositions, and processes for applying the coating compositions to a substrate, are also provided herein.
摘要:
The invention relates to novel aqueous, crosslinkable polyurethane dispersions based on terephthalic acid polyesters, the production thereof and their use in combination with hydroxy-functional reactants for the production of lacquers, coatings and sizes which are distinguished especially by high film hardness together with high elasticity and very good adhesion.