# US 10,767,031 B2 · Cottonseed oil based liquid color composition and plastics coloring method using the same

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- Number: US 10,767,031 B2
- Document ID: US10767031B2
- Status: Granted
- Kind: B2
- Application number: 15/883,501
- Filed: 2018-01-30
- Published: 2018-06-07
- Granted: 2020-09-08
- Earliest claimed: 2013-07-17
- Applicants: Stephen B. Maguire
- Inventors: Stephen B. Maguire
- Web page: https://patentgrep.com/patent/US10767031B2

## CPC

- B29C 48/95: by adding lubricant to the moulding material
- B29C 45/0001: {characterised by the choice of material}
- B29C 45/0013: {using fillers dispersed in the moulding material, e.g. metal particles}
- B29C 48/06: Rod-shaped
- B29C 48/29: in liquid form
- B29C 48/94: Lubricating
- C08J 3/2053: {the additives only being premixed with a liquid phase}
- C08J 3/226: {using a polymer as a carrier}
- C08K 3/013: Fillers, pigments or reinforcing additives
- C08K 5/0041: {Optical brightening agents, organic pigments}
- C08K 5/09: Carboxylic acids; Metal salts thereof; Anhydrides thereof
- B29C 2948/92704: Temperature
- B29K 2101/12: Thermoplastic materials
- B29K 2105/0011: {Biocides}
- B29K 2105/0032: {Pigments, colouring agents or opacifiyng agents}
- B29K 2105/0044: {Stabilisers, e.g. against oxydation, light or heat}
- C08J 2300/00: Characterised by the use of unspecified polymers
- C08J 2300/22: Thermoplastic resins
- C08J 2491/00: Characterised by the use of oils, fats or waxes; Derivatives thereof
- B29C: SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING (making preforms B29B11/00; making laminated products by combining previously unconnected layers which become one product whose layers will remain together B32B37/00 - B32B41/00)
- C08J: WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H (working, e.g. shaping, of plastics B29)
- C08K: Use of inorganic or non-macromolecular organic substances as compounding ingredients (paints, inks, varnishes, dyes, polishes, adhesives C09)
- B29K: INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR {MOULDS, } REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS

## Abstract

A method of fabricating plastic products having a preselected color, comprising preparing a dispersion of pigment of the preselected color in cottonseed oil; supplying a preselected plastic resin for the product to be fabricated to a process machine having a rotating screw; furnishing the dispersion to the process machine at a position adjacent to threaded portion of the rotating screw; and blending the dispersion and the resin by rotating the screw.

## Claims

### Claim 1

A method for making colored plastic parts comprising plastic resin being selected from the group comprising acrylic, nylon, acrylonitrile butadiene styrene, polycarbonate, polybenzimidazole, polyether sulfone, polyetherether ketone, polyethermide, polyethylene, polypropylene, polyethylene sulfide, polyphenylene oxide, polystyrene, polyvinyl chloride, polytetrafluoroethylene, the method comprising:
a) providing a collection of pigments;
b) providing a quantity of a liquid carrier consisting of cottonseed oil;
c) from the collection of pigments creating a plurality of separate single pigment liquid dispersions in separate portions of the cottonseed oil;
d) blending one or more of the plurality of separate single pigment liquid dispersions to create a liquid blend of a desired color;
e) combining the liquid blend with the selected plastic resin;
f) molding the resin-liquid blend combination into the colored plastic parts.

### Claim 2

A colored plastic part comprising a plastic resin selected from the group comprising acrylic, nylon, acrylonitrile butadiene styrene, polycarbonate, polybenzimidazole, polyether sulfone, polyetherether ketone, polyethermide, polyethylene, polypropylene, polyethylene sulfide, polyphenylene oxide, polystyrene, polyvinyl chloride, and polytetrafluoroethylene, made by the process comprising:
a) providing a collection of pigments;
b) providing a quantity of a liquid carrier consisting of cottonseed oil;
c) from the collection of pigments creating a plurality of separate single pigment liquid dispersions in separate portions of the cottonseed oil;
d) blending one or more of the plurality of separate single pigment liquid dispersions to create a liquid blend of a desired color;
e) combining the liquid blend with the selected plastic resin;
f) molding the resin-liquid blend combination into the colored plastic part.

### Claim 3 (depends on 1)

The method of claim 1, wherein the pigment in each of the plurality of separate single pigment liquid dispersions comprises from about 25% to about 80% by weight of the plurality of separate single pigment liquid dispersion.

### Claim 4 (depends on 1)

The method of claim 1, wherein the pigments in the blend of the desired color comprises comprise about 25% to about 80% by weight of the liquid blend.

### Claim 5 (depends on 1)

The method of claim 1, wherein at least one of the pigments in the collection of pigments is a powder.