摘要:
The invention relates to a non-aqueous liquid coating composition comprising a) a polyol, b) a polyisocyanate crosslinker c) one or more thiol-functional compounds, d) a metal-based curing catalyst for catalyzing the addition reaction of isocyanate groups and hydroxyl groups, e) a base having a pKa value of at least 7, and which base does not react with isocyanate groups in a way wherein the basicity is reduced, and f) one or more acid group-containing compounds, wherein the one or more thiol-functional compounds are present in an amount to provide a molar ratio of thiol groups over the metal atoms of the metal-based curing catalyst of 1 or higher, and wherein the base is present in a molar amount lower than the molar amount of thiol groups, and wherein the molar ratio of acid groups and base groups is 1:1 or higher.
摘要:
Two component polyurethane adhesives contain (a) at least one alkyl-substituted 4,4′-di(aminocyclohexyl)alkane wherein each cyclohexyl group is alkyl-substituted in at least one position ortho to the amino group, (b) at least one 2,4′-di(aminocyclohexyl)alkane or 2,2′-di(aminocyclohexyl)alkane, (c) a mixture of (ii) at least one alkyl-substituted 4,4′-di(aminocyclohexyl)alkane wherein each cyclohexyl group is alkyl-substituted and (ii) at least one 2,4′-di(aminocyclohexyl)alkane and/or 2,2′-di(aminocyclohexyl)alkane, or (d) a mixture of 40 to 99.9% by weight (a), (b) or (c) with 0.1 to 60% by weight of at least one unsubstituted 4,4′-di(aminocyclohexyl)alkane, The adhesives also contain one or more polyols, in which at least 50% of the hydroxyl groups are secondary hydroxyls. These adhesive provide a useful combination of long open time and excellent sag resistance.
摘要:
The invention relates to a two-component coating composition comprising (1) a base component comprising (A) at least one polycarbonate diol, (B) at least one polyaspartic ester, and (C) at least one organosilane-modified filler, and (2) a hardener component comprising (D) at least one hexamethylene diisocyanate isocyanurate which contains aliphatic polyester groups and has an isocyanate content of 5 to 23%. The invention also relates to a method for producing a coating using said coating composition as well as to the coatings produced according to said method.
摘要:
The invention relates to a method of making a fabric comprising: preparing a thermoplastic polyurethane composition, wherein said thermoplastic polyurethane composition comprises: a thermoplastic polyurethane comprising the reaction product of: (i) one or more polyols, (ii) one or more diisocyanates, (iii) one or more chain extenders, (iv) optionally one or more crosslinking agents, and (v) one or more functional modifiers, wherein each said functional modifier is a reaction product of an aminodiol and a Bronsted acid and wherein the functional modifier is incorporated into the backbone of the thermoplastic polyurethane; melt-spinning said thermoplastic polyurethane composition into a fiber; and processing the fiber into a fabric and a method of producing an article of clothing.
摘要:
The invention relates to foamed shaped parts provided with reinforcing materials and made from polyurethane urea elastomers, and to the use thereof.
摘要:
The invention relates to moulded parts provided with reinforcing materials and consisting of polyurethane urea elastomers having defined urea and urethane contents, and to the use thereof.
摘要:
Formulations are provided comprising, at least two parts, such as, a first part comprising at least one polyamine and at least one polyol, the first part being substantially free of polyetheramine; and a second part comprising at least one polyisocyanate, or a first part comprising at least one polyamine, at least one polyol and a catalyst; and a second part comprising at least one polyisocyanate. Also, provided are compositions, such as coating and paint compositions, and methods of preparing and using compositions, including coating and paint compositions and methods.