21-11-2013 дата публикации
Номер: US20130309924A1
The invention relates to reinforced pultruded polyurethane and to a method for the production thereof by pultrusion. 1. Reinforced pultruded polyurethane obtainable via reacting a) one or more polyether polyols with an OH number of from 15 to 50 based on propylene oxide and', 'b) a mixture of one or more polyether polyols with an OH number from 150 to 600 and one or more chain extenders and/or crosslinking agents with an OH number of from 700 to 1827, and, 'A) a mixture of not homogeneously miscible components a) and b) with'}B) one or more epoxides with{'sub': 1', '6, 'C) organic polyisocyanates from the group consisting of butylene 1,4-diisocyanate, pentane 1,5-diisocyanate, hexamethylene 1,6-diisocyanate (HDI), isophorone diisocyanate (IPDI), 2,2,4- and/or 2,4,4-trimethylhexamethylene diisocyanate, the isomers of bis(isocyanatocyclohexyl)methane or a mixture of these with any desired isomer content, cyclohexylene 1,4-diisocyanate, phenylene 1,4-diisocyanate, toluylene 2,4- and/or 2,6-diisocyanate (TDI), naphthylene 1,5-diisocyanate, diphenylmethane 2,2′- and/or 2,4′- and/or 4,4′-diisocyanate (MDI) or higher homologs of MDI (polymeric MDI), 1,3- and/or 1,4-bis(2-isocyanatoprop-2-yl)benzene (TMXDI), 1,3-bis(isocyanatomethyl)benzene (XDI), and also alkyl 2,6-diisocyanatohexanoate (lysine diisocyanate) having C-C-alkyl groups, or a mixture thereof, and'}optionally a proportion of modified diisocyanates having uretdione, isocyanurate, urethane, carbodiimide, uretonimine, allophanate, biuret, amide, iminooxadiazinedione and/or oxadiazinetrione structure or else unmodified polyisocyanate having more than 2 NCO groups per moleculein the presence ofD) optionally a catalyst,E) mold-release an agent,F) optionally an inhibitor,G) optionally other additives and/or auxiliaries,H) optionally a filler orI) a continuous-filament fiber, a fiber mat, and/or textile fabric as a reinforcing material.2. The reinforced pultruded polyurethane as claimed in claim 1 , where the mixture of ...
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