Polymerization Coupled Compounding Process

Patent metadata

Field	Value
Publication number	US-2016319084-A1
Application number	US-201615211747-A
Country	US
Kind code	A1
Filing date	Jul 15, 2016
Priority date	Mar 15, 2013
Publication date	Nov 3, 2016
Grant date	—

Abstract

Provided is a process for preparing an improved compounded product and a compounded product prepared by the described process.

First claim

1 . A process for preparing a compounded polyamide, comprising introducing a molten polyamide feedstock directly to one or more polymer compounding devices, where the molten feedstock is prepared by a polymerization process, wherein the polymerization process is a continuous process or a batch process.

2 .- 3 . (canceled)

4 . The process according to claim 1 , wherein the molten polyamide feedstock is a molten nylon66 feedstock.

5 . The process according to claim 1 , wherein the polymer compounding device is an extruder.

6 . The process according to claim 5 , wherein the extruder is a twin-screw extruder.

7 . The process according to claim 6 , wherein the twin-screw extruder contains at least 2 vent ports.

8 . The process according to claim 6 , wherein the twin-screw extruder contains at least 3 vent ports.

9 . The process according to claim 7 , wherein the vent ports are at atmospheric pressure.

10 . The process according to claim 7 , wherein the vent ports are subjected to vacuum conditions.

11 . The process according to claim 6 , wherein the twin-screw extruder has a length to diameter ratio of the screw shaft in the range of 24:1 to 56:1.

12 . The process according to claim 6 , wherein the twin-screw extruder has a length to diameter ratio of the screw shaft in the range of 36:1 to 48:1.

13 . The process according to claim 1 , wherein only a portion of the molten feedstock is sent directly to the one or more polymer compounding devices.

14 . The process according to claim 1 , further comprising introducing one or more additives, fillers, reinforcing agents and modifiers into the one or more polymer compounding devices.

15 . The process according to claim 1 , wherein the polymer polymerization process occurs less than 50 feet from the one or more polymer compounding devices.

16 . The process according to claim 1 , wherein the compounded polyamide has a relative viscosity (RV) range between samples of less than about 3 units.

17 . The process according to claim 16 , wherein the compounded polyamide has a relative viscosity (RV) range between samples of less than about 2 units.

18 . The process according to claim 1 , wherein the compounded polyamide has a relative viscosity (RV) range between samples of less than about 1 unit.

19 .- 28 . (canceled)

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

• B29C48/40

  using two or more parallel screws {or at least two parallel non-intermeshing screws}, e.g. twin screw extruders · CPC title

• C08J3/201 Primary

  Pre-melted polymers · CPC title

• C08G69/04

  Preparatory processes · CPC title

• C08L33/24

  Homopolymers or copolymers of amides or imides · CPC title

• C08J5/043

  with glass fibres · CPC title