Patent ES-8602073-A1 (ES)
Title: Thermosetting high solids solvent-based polyester-urethane one-component coating compositions.
IPC: C09D175/06
Filed: 1984-10-02
Abstract: A high solids, solvent-based, thermosetting, one-component coating compsn. having a sprayability of at least 40%, which when cured is flexible and hard so that: when the coating is deposited on an elastomeric substrate and cured, the coated substrate can be bent around a 1.27 cm (1/2 inch) mandrel with the coating facing outwardly and the coating exhibits no break or crack at 1.7 deg. C (35 deg. F) and when the coating is deposited on a metallic substrate and cured, the coated substrate has a Sward hardness of at least 14 contains a film-former comprising a polyester-urethane polyol and a curing agent, where the polyester-urethane polyol has an OH value of at least 50, pref. 140-250, and comprises: (A) 60-95 wt.% acyclic gps. and (B) 0-30 wt.%, pref. 10-25 wt.%, cyclic gps., where the wt.% of cyclic gps. and urethane gps. multiplied by 3 is 15-65. (0/0) EPAB- EP-140186 B A high solids, solvent-based, thermosetting, one-component coating compsn. having a sprayability of at least 40%, which when cured is flexible and hard so that: when the coating is deposited on an elastomeric substrate and cured, the coated substrate can be bent around a 1.27 cm (1/2 inch) mandrel with the coating facing outwardly and the coating exhibits no break or crack at 1.7 deg. C (35 deg. F) and when the coating is deposited on a metallic substrate and cured, the coated substrate has a Sward hardness of at least 14 contains a film-former comprising a polyester-urethane polyol and a curing agent, where the polyester-urethane polyol has an OH value of at least 50, pref. 140-250, and comprises: (A) 60-95 wt.% acyclic gps. and (B) 0-30 wt.%, pref. 10-25 wt.%, cyclic gps., where the wt.% of cyclic gps. and urethane gps. multiplied by 3 is 15-65. (41pp Dwg.No.0/0) - EP-140186 B A high solids, solvent based, thermosetting, one component coating, composition containing a film-former comprising a polyester-urethane and a curing agent, the polyester-urethane comprising acyclic moieties, characterised in that it has a sprayability of at least 40 percent, when cured is flexible and hard in that when the coating composition is deposited on an elastomeric substrate and cured, the coated substrate can be bent around a 1.27 cm (1/2 inch) mandrel with the coating facing outwardly and the coating exhibits substantially no breaks or cracks when tested at 1.7 deg.C (35 deg.F) and in that when the coating composition is deposited on a metallic substrate and cured, the coated substrate has a Sward hardness if at least 14 said polyester-urethane polyol having a hydroxyl value of at least 50 and comprising: (A) 60 to 95 percent by weight acyclic moieties, optionally (B) up to 0 to 30 percent by weight cyclic moieties, the percentages being based on the total weight of polyester-urethane polyol, the sum of the weight percentage of cyclic moieties and the weight percentage of urethane moieties multiplied by 3 being from 15 to 65. (20pp) USAB- US4540766 A A high solids, solvent based, thermosetting, one component coating compsn. having a sprayability of at least 40%, comprising a polyester-urethane polyol (I) and a curing agent (II) as a film-former. - (I) is prepd. by reacting an organic polyisocyanate with a polyester polyol formed from reacting an organic polycarboxylic acid, pref. (methyl) hexahydrophthalic acid, with a mixt. of a straight chain 2-20C diol and a diol contg. neopentyl gp. branching the prod. having a hydroxyl value of at least 50, pref. 80 and comprises (A) 60-95, pref. 70-95wt.% acyclic moieties, and opt. (B) up to 30, pref. 10-25,wt.% cyclic moieties, and 1-20, pref. 5-10,wt.% urethane moieties. (II) is a blocked isocyanate, an aminoplast or phenoplast.