Inv Nylon Chemicals Americas, LLC

E.i. Dupont De Nemours and Company

Invista North America S.a.r.l.

Invista Textiles Limited

John F Buzinkai

Robert Clayton Wheland

Benjamin D Herzog

Charles Richard Langrick

James Michael Shurish

Alexander Lanier Gulledge

Chee Sern Lim

Isaac K Iverson

Marion R DeWitt, Jr

Leen Monster

The present disclosure relates to the use of thermoplastic resins in millimeter wave network applications. More specifically, it relates to polyamide materials meeting the requirements of dielectric performance in such applications.

Thermoplastic resins for network applications

Resins for improved flow in injection molding, molded articles made from the same, and methods of using the same. A molded article formed from a polymer feed includes nylon-6,6. The molded article also includes a thin elongated profile including a thickness of up to 1.5 mm and a flow length of at least 25 cm. An absolute value of &#x394;RV of the molded article as compared to the polymer feed is from 0 to 5, the RV determined according to ASTM D789.

Resins for improved flow in injection molding

The disclosures herein relate to a polymer such as nylon 66, having low yellowness and excellent whiteness retention for applications in melt extrusion and injection molding where an increase in molecular weight is not desirable. The polymer is prepared with a phosphorus compound content, e.g., a sodium hypophosphite (SHP) content, in an amount of 150 to 300 ppm by weight. The presence of an 'end cap' additive such as one selected from acetic acid, propionic acid, benzoic acid, or succinic acid, added at the start of polymerization, effectively mitigates undesired molecular weight gain.

Nylon resins and process

A process for increasing the relative viscosity of a polyamide includes heating the polyamide in the presence of a base and a catalyst with the catalyst being at least one compound of the formula:

Process for increasing the relative viscosity of polyamides with reduced

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Chattanooga, TN, United States of America

John F Buzinkai