Polyamides were prepared in which part or all of the hexamethylenediamine (HMD) in nylon-6,6 was replaced by its isomer, 2-methylpentamethylenediamine (MPMD). The intermediate compositions are considered random copolymers between the two homopolymers (66 and MPMD-6). The crystalline properties of...
Structure and morphology of lamellar crystals of two polyamides derived from 2-methylpentamethylenediamine (MPMD) and dibasic acids with 4 or 8 methylenes have been studied by transmission electron microscopy, electron diffraction and X-ray diffraction. The crystallographic unit cell of MPMD-6 is ...
odd-even nylons2-methylpentamethylenediamineStructure and morphology of lamellar crystals of two polyamides derived from 2-methylpentamethylenediamine (MPMD) and dibasic acids with 4 or 8 methylenes have been studied by transmission electron microscopy, electron diffraction and X-ray diffraction. The ...
METHOD FOR MAKING 2-METHYLPENTAMETHYLENEDIAMINE AND ADIPONITRILE WITH HOT AMMONIA SWEEPDisclosed is a process for extending the useful life of a hydrogenation catalyst for making diamines in which 2-methylglutaronitrile and adiponitrile are charged separately to the catalyst in sequence with an ...
TERPOLYAMIDES AND MULTIPOLYAMIDES CONTAINING AMIDE UNITS OF 2-METHYLPENTAMETHYLENEDIAMINE AND PRODUCTS PREPARED THEREFROMpolyamide and polyamide fibres with a majority of hexamethylene adipamide units and at least two other minority proportions amide units, one of which is the méthylpentaméthylènediamine ...
not available for EP066888of corresponding document:Polymers of aromatic diacids and 2-methylpentamethylenediamine are prepared in the presence of formic acid. The formic acid reduces the tendency of the 2-methylpentamethylenediamine to cyclize.Marks, David Neil...
Franco, Puiggalı, Villasen - Structure of odd – even nylons derived from 2-methylpentamethylenediamine . Effect of the side methyl group.pdfFranco, LPuiggalı, JVillasen, P
not available for EP0558649of corresponding document: WO9208754 Polyamides and polyamide fibers having a major proportion of hexamethyleneadipamide units and minor proportions of at least two other amide units, one of those other amide units being those of 2-methylpentamethylenediamine are disclosed....
I. Du Pont De Nemours And Company Process for making partially aromatic polyamides containing 2-methylpentamethylenediamine unitsUS5270437 * 1992年11月13日 1993年12月14日 E. I. Du Pont De Nemours And Company Process for making partially aromatic polyamides containing 2-methylpentamethylenediamine ...
I. Du Pont De Nemours And Company Terpolyamides and multipolyamides containing amide units of 2-methylpentamethylenediamine and products prepared therefromUS5422420 * Nov 18, 1991 Jun 6, 1995 E. I. Du Pont De Nemours And Company Terpolyamides and multipolyamides containing amide units of 2-...