Ludwigshafen, Germany-With effect from 1 Dec, BASF is increasing the sales prices for 1,4-butanediol (BDO) and its derivatives worldwide, as far as existing contracts permit. The firm cited increased costs and unsatisfactory margins as the reasons for the increases detailed below.Product Increase, $/kg1,4-butanediol (BDO) + 0.30Gamma-Butyrolactone (GBL) + 0.30N-Methylpyrrolidone (NMP, all grades) + 0.30Tetrahydrofuran (THF) + 0.35Polytetramethylene-ether glycol (PolyTHF)+ 0.35With seven plants on three continents BASF says its annual production capacity of 575 000 tonnes BDO makes it the world biggest maker of butanediol and derivatives. The materials are used to make engineering plastics, polyurethanes, solvents, electronic chemicals and elastic fibres (PolyTHF), BASF added."