Table 1 shows the results of DSC melt point for nylon 66 and acetal resins.
Nylon 66 and acetal resins were extruded at various screw speeds.
Last year, the company increased its domestic Ultraform acetal resins
capacity, and, in Europe, it has just finished expanding its Ultrason E polyethersufone (PES) capacity to meet pressing global market needs after a supplier withdrew its PES resins.
More than 40 are used in cycling alone, including DuPont LYCRA(R) brand spandex fiber, COOLMAX(R) performance fabric, KEVLAR(R) aramid fiber, TEFLON(R) fluoropolymer resins, DELRIN(R) acetal resins
and CORDURA(R) nylon.
Two new grades of Delrin(R) acetal resins
offering longer life for gears and other moving parts.
Other new Delrin acetal resins
make possible the injection molding of flat shapes and large parts without the warp problems associated with standard acetals.
The DuPont Performance Polymers business manufactures and sells Crastin[R] PBT and Rynite[R] PET thermoplastic polyester resins, Delrin[R] acetal resins
, Hytrel[R] thermoplastic polyester elastomers, DuPont[TM] ETPV engineering thermoplastic vulcanizates, Minlon[R] mineral reinforced nylon resins, Neoprene polychloroprene, Tynex[R] filaments, Vespel[R] parts and shapes, Kalrez[R] perfluoroelastomer parts, Vamac[R] ethylene acrylic elastomers (AEM), Viton[R] fluoroelastomers, Viton[R] FreeFlow[TM] processing aids, Zytel[R] nylon resins and Zytel[R] HTN high-performance polyamides.
Manufacturers use formaldehyde to manufacture formaldehyde resins and other downstream products such as acetal resins
, BDO, MDI, and pentaerythritol.
For the case of acetal resins
, a specific test to measure formaldehyde emission is available as VDA 275 from the German Association of the Automotive Industry.
a two-year-old compounder of engineering thermoplastics, has expanded its product range by becoming the North American distributor of Kocetal-brand acetal resins
produced by Kolon Chemical Co.
World production of formaldehyde is about 15 million metric tons, and this gas is used mainly in the production of phenolic, urea, melamine, and acetal resins
, which have wide use in the production of adhesives and binders in the wood, plastics, textiles, leather, and related industries (20,42).
DuPont manufactures acetal resins
from which it is alleged some of the acetal fittings were made.