# US 4,391,943 A · UV Stabilized nylon 6

> Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt

- Number: US 4,391,943 A
- Document ID: US4391943A
- Status: Granted
- Kind: A
- Application number: 06/336,713
- 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/US4391943A

## CPC

- C08L 67/025: {containing polyether sequences}
- C08K 3/04: Carbon
- C08L 67/02: Polyesters derived from dicarboxylic acids and dihydroxy compounds (C08L67/06 takes precedence)
- C08L 77/00: Compositions of polyamides obtained by reactions forming a carboxylic amide link in the main chain (of polyhydrazides C08L79/06; of polyamideimides or polyamide acids C08L79/08); Compositions of derivatives of such polymers
- C08L: COMPOSITIONS OF MACROMOLECULAR COMPOUNDS (compositions based on polymerisable monomers C08F, C08G; artificial filaments or fibres D01F; textile treating compositions D06)
- C08K: Use of inorganic or non-macromolecular organic substances as compounding ingredients (paints, inks, varnishes, dyes, polishes, adhesives C09)

## Abstract

Nylon 6 molding and extrusion grade resins are stabilized against UV degradation by the addition of small amounts of carbon black. The elongation and impact strength of the nylon are preserved, if not improved, by melt blending from 5% to 50% by weight of an elastomeric polyester with the nylon and carbon black.

## Claims

### Claim 1

A UV stabilized nylon 6, a polymer of caprolactam, containing about 0.5% to 5.0% carbon black, the improvement comprising the addition of from 5% to 50% by weight of a polyester elastomer.

### Claim 2

A method for improving the impact properties of a nylon, a polymer of caprolactam, 6 molding resin filled with carbon black, which comprises melt blending 5% to 50% by weight of a polyester elastomer with the nylon and carbon black.