Polymerization coupled compounded nylon

Patent metadata

Field	Value
Publication number	US-11447609-B2
Application number	US-202016787516-A
Country	US
Kind code	B2
Filing date	Feb 11, 2020
Priority date	Mar 15, 2013
Publication date	Sep 20, 2022
Grant date	Sep 20, 2022

Abstract

The present invention provides a process for preparing an improved compounded product and a compounded product prepared by that process.

First claim

We claim:

1. A compounded nylon prepared by a process of:
introducing a nylon 6/6 feedstock to one or more extruders at a consistent rate, wherein at least one extruder contains at least two vent ports, wherein at least one of the at least two vent ports is subjected to vacuum conditions, and wherein all vacuum conditions in the extruder are applied consistently; and
mixing and/or blending the nylon feedstock with one or more materials to provide the compounded nylon;
wherein the nylon feedstock is prepared in a molten form by a batch polymerization process or a continuous polymerization process and delivered directly in molten form to the one or more extruders.

2. The compounded nylon of claim 1 , wherein the extruder is a twin-screw extruder.

3. The compounded nylon of claim 2 , wherein the twin-screw extruder contains at least 3 vent ports.

4. The compounded nylon of claim 3 , wherein at least two of the at least 3 vent ports are subjected to vacuum conditions.

5. The compounded nylon of claim 1 , wherein only a portion of the nylon feedstock is sent directly to the one or more extruders.

6. The compounded nylon of claim 2 , wherein the twin-screw extruder has a length to diameter ratio of the screw shaft of 44:1.

7. The compounded nylon of claim 1 , wherein the compounded nylon has a plate-out value of about 0.7 mg/1,000 shots or less.

8. The compounded nylon of claim 1 , wherein the one or more materials include fiberglass, waxes, minerals, carbon fiber, fiber reinforcement, heat stabilizers, color concentrates, flame retardant additives, and impact modifiers.

9. The compounded nylon of claim 8 , wherein fiberglass is the material compounded with the nylon in an amount of about 50% by weight.

Assignees

• Ascend Performance Mat Operations Llc

Inventors

• Fogle Raymond E
• Calvert Troy D
• Carben Zachary J
• Manning Steven C
• Wang Chie H
• Wheeler Paul A
• Zabcik J Marty

Classifications

• C08J2377/06

  Polyamides derived from polyamines and polycarboxylic acids (C08J2377/10 takes precedence) · CPC title

• B29K2105/0002

  monomers or prepolymers · CPC title

• C08K5/0008

  Organic ingredients according to more than one of the "one dot" groups of C08K5/01 - C08K5/59 · CPC title

• C08G69/04

  Preparatory processes · CPC title

• C08J2377/00

  Characterised by the use of polyamides obtained by reactions forming a carboxylic amide link in the main chain; Derivatives of such polymers · CPC title