# US 4,391,951 A · Nylon 6 with improved wear life

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- Number: US 4,391,951 A
- Document ID: US4391951A
- Status: Granted
- Kind: A
- Application number: 06/336,712
- Filed: 1982-01-04
- Granted: 1983-07-05
- Earliest claimed: 1982-01-04
- Assignees: The Polymer Corporation
- Inventors: Howard A. Scheetz
- Web page: https://patentgrep.com/patent/US4391951A

## CPC

- C08L 77/02: Polyamides derived from omega-amino carboxylic acids or from lactams thereof (C08L77/10 takes precedence)
- C08L: COMPOSITIONS OF MACROMOLECULAR COMPOUNDS (compositions based on polymerisable monomers C08F, C08G; artificial filaments or fibres D01F; textile treating compositions D06)

## Abstract

Nylon 6 with increased wear life is comprised of a major weight amount of nylon 6 and minor weight amounts of a polyester elastomer, a polyolefin and a polyfluorocarbon.

## Claims

### Claim 1

A molding composition comprising a melt blend of:
a major weight amount of nylon 6, a polymer of caprolactam, and
2 to 5 weight percent amount of a polyolefin, 2 to 5 weight percent of a polyfluorocarbon and 5 to 46 weight percent of a polyester elastomer.

### Claim 2 (depends on 1)

A molding composition according to claim 1 wherein the polyolefin is ultra high molecular weight polyethylene.

### Claim 3 (depends on 1)

A molding composition according to claim 1 wherein the polyfluorocarbon is polytetrafluoroethylene.

### Claim 4

A method for improving the wear life of nylon 6 which comprises blending the following:
at least 50 weight percent nylon 6
5 to 46 weight percent polyester elastomer
2 to 5 weight percent polyolefin, and
2 to 5 weight percent fluorinated polyethylene at temperatures above the melting points of both the nylon and the polyester elastomer for a time sufficient to increase the molecular weight of the blend.