| Hempel A/S Patent applications |
| Patent application number | Title | Published |
|---|
| 20120093657 | IMPROVED COATING COMPOSITION FOR WIND TURBINE BLADES - The present application discloses a wind turbine blade having on the outer surface thereof a polyurethane-based coating including a polyurethane binder prepared from polyol(s) having an average functionality of ≧2.0 and <8.0; at least 50% (w/w) of the polyols have aliphatic polyester segments included therein and have a Mw of 300-3,000 g/mol; and polyisocyanate(s) having an average functionality of <3.0; at least 50% (w/w) of the polyisocyanate(s) are selected from: (i) polyisocyanates having aliphatic polyester segments included therein, and having a molecular weight of 500-3,000 g/mol and a functionality of ≧2.0 and <3.0; (ii) polyisocyanates of the allophanate type having a Mw of 250-2,000 g/mol and a functionality of ≧2.0 and <3.0; and (iii) polyisocyanates of the uretdion type having a Mw of 250-2,000 g/mol and a functionality of ≧2.0 and <3.0. The application also discloses corresponding coating compositions and a method for coating a substrate. | 04-19-2012 |
| 20120031300 | ENZYME-BASED SELF-POLISHING COATING COMPOSITIONS - The present application discloses an enzyme-based self-polishing coating composition comprising a binder phase in the form of a binder system and a pigment phase, said pigment phase comprising (i) a polysaccharide and (ii) an enzyme capable of facilitating hydrolysis of said polysaccharide, said enzyme being immobilized on a carrier material, e.g. on the polysaccharide. The enzyme may be glucoamylase and the polysaccharide may be starch. A marine structure coated with the coating composition; a method for the preparation of the enzyme-based self-polishing coating composition; the use of the polysaccharide and the enzyme in a coating composition to provide self-polishing of said coating composition; and a method for providing a self-polishing effect of a coating composition are also disclosed. | 02-09-2012 |
| 20110250350 | NOVEL TIE-COAT COMPOSITIONS - The present application discloses a condensation cure silicone RTV tie-coat composition comprising (i) a silanol-terminated polydiorganosiloxane, and (ii) 0.1-10% by wet weight of the total tie-coat composition of one or more adhesion promoters selected from the group consisting of bis(trialkoxysilylalkyl)amines and N,N′-bis(trialkoxysilylalkyl)alkylenediamines and optionally (iii) up to 30% by wet weight of the total tie-coat composition of one or more hydrolysable silanes. Further are disclosed a method of restoring a damaged foul release coating system area on a substrate and a method of applying a foul release coating system to a freshly applied substrate of anticorrosive coat, utilizing tie-coat composition. | 10-13-2011 |
| 20100136359 | COATING COMPOSITIONS COMPRISING BISMUTH-ALLOYED ZINC - The present application discloses (i) a coating composition comprising a particulate zinc-based alloyed material, said material comprising 0.05-0.7% by weight of bismuth (Bi), the D | 06-03-2010 |
| 20090274844 | Method for the establishment of a crack resistant epoxy paint coat and paint compositions suitable for said method - The present invention relates to a method for the establishment of a crack resistant epoxy paint coat and paint compositions suitable for said method. The method is developed for use in ballast tanks e.g. a ballast tank of a vessel. The method involves the steps: (i) applying a paint composition comprising an epoxy-based binder system onto the surface thereby forming a curable paint film on the surface, and (ii) allowing the curable paint film to cure thereby forming the epoxy paint coat. The paint composition has a viscosity of at the most 140 KU, when ready to be applied. The paint composition comprises 35-80% by solids volume of the paint of an epoxy-based binder system having a ratio between the hydrogen equivalents and the epoxy equivalents in the range of 20:100 to 120:100. The paint composition furthermore comprises 0.5-30% by solids volume of the paint of one or more fibres. The fibres have an average length, of at the most 250 μm. | 11-05-2009 |
