# US 5,707,720 A · Methods and materials for coating textile compositions

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- Number: US 5,707,720 A
- Document ID: US5707720A
- Status: Granted
- Kind: A
- Application number: 08/779,373
- Filed: 1997-01-07
- Granted: 1998-01-13
- Earliest claimed: 1993-02-24
- Assignees: Penford Products Company
- Inventors: Charles J. Fox
- Web page: https://patentgrep.com/patent/US5707720A

## CPC

- D06M 15/233: aromatic, e.g. styrene
- D06M 7/00: {Treating fibres, threads, yarns, fabrics, or fibrous goods made of other substances with subsequent freeing of the treated goods from the treating medium, e.g. swelling, e.g. polyolefins (D06M10/00 takes precedence; treating fibres or filaments made of glass, mineral -, or slag wool C03C; carbon fibres D01F11/10)}
- D06M 15/11: Starch or derivatives thereof
- D06M 15/227: of hydrocarbons, or reaction products thereof, e.g. afterhalogenated or sulfochlorinated
- D06M 2200/40: Reduced friction resistance, lubricant properties; Sizing compositions
- Y10T 442/2402: Coating or impregnation specified as a size
- D06M: TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
- Y10T: TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION

## Abstract

The present invention provides a method of preparing a sized warp yarn comprising the steps of (a) preparing a warp yarn sizing composition comprising (i) a first component which is a starch material, and (ii) a second component comprising starch and a reaction product of styrene and 1,3-butadiene wherein said starch component of said second component is characterized by an intrinsic viscosity of from about 0.07 to about 0.35 dl/g, and (b) slashing warp yarn with the sizing composition of step (a).

## Claims

### Claim 1

A method of preparing a sized warp yarn said method comprising the steps of:
(a) preparing a warp yarn sizing composition comprising (i) a first component which is a starch material, and (ii) a second component which comprises starch and a reaction product of styrene and 1,3-butadiene wherein said starch component of said second component is characterized by an intrinsic viscosity measured at 25.degree. C. with the solute being water of from about 0.07 dl/g to about 0.35 dl/g; and
(b) slashing warp yarn with the sizing composition of step (a).

### Claim 2 (depends on 1)

The method of claim 1 wherein said warp yarn sizing composition comprises a textile wax.

### Claim 3 (depends on 1)

The method of claim 1 wherein said first component comprises starch which is characterized by an intrinsic viscosity measured at 25.degree. C. with the solute being water of about 0.12 dl/g to about 0.25 dl/g.

### Claim 4 (depends on 1)

The method of claim 1 wherein said second component comprises a styrene/1,3-butadiene starch graft copolymer.

### Claim 5 (depends on 1)

The method of claim 1 wherein said second component comprises a blend of starch and a styrene/1,3-butadiene latex.

### Claim 6 (depends on 1)

The method of claim 1 wherein said first component comprises an uncooked acid modified starch.

### Claim 7 (depends on 6)

The method of claim 6 wherein said size composition comprises from 90-94% by weight solids of said first component comprising uncooked acid modified starch and from 6-10% by weight solids of said second component comprising starch and a reaction product of styrene and 1,3-butadiene wherein said starch is characterized by an intrinsic viscosity measured at 25.degree. C. with the solute being water of from about 0.7 dl/g and about 0.35 dl/g.

### Claim 8

A warp yarn sizing composition comprising a (i) first component which is a starch material, (ii) a second component which comprises starch and a reaction product of styrene and 1,3-butadiene, and (iii) a textile wax, wherein said starch component of said second component is characterized by an intrinsic viscosity measured at 25.degree. C. with the solute being water of about 0.07 dl/g to about 0.35 dl/g.

### Claim 9 (depends on 8)

The warp yarn sizing composition of claim 8 wherein said second component comprises a starch which is characterized by an intrinsic viscosity measured at 25.degree. C. with the solute being water of about 0.12 dl/g to about 0.25 dl/g.

### Claim 10 (depends on 8)

The warp yarn sizing composition of claim 8 wherein said second component comprises a styrene/1,3-butadiene starch graft copolymer.

### Claim 11 (depends on 8)

The warp yarn sizing composition of claim 8 wherein said second component comprises a blend of starch and a styrene/1,3-butadiene latex.

### Claim 12 (depends on 8)

The warp yarn sizing composition of claim 8 wherein said first component comprises an uncooked acid modified starch.

### Claim 13 (depends on 12)

The warp yarn sizing composition of claim 12 which has a solids content comprising from 90-94% by weight of said first component and from 6-10% by weight of said second component.

### Claim 14 (depends on 8)

The warp yarn sizing composition of claim 8 which is from about 8 to about 22 percent water by weight.

### Claim 15 (depends on 1)

A sized warp yarn prepared according to the method of claim 1.

### Claim 16 (depends on 15)

The sized warp yarn according to claim 15 wherein the warp yarn sizing binder comprises a styrene/1,3-butadiene starch graft copolymer.

### Claim 17 (depends on 1)

A sized cloth comprising a sized warp yarn prepared according to the method of claim 1.

### Claim 18 (depends on 17)

The sized cloth according to claim 17 wherein the warp yarn sizing binder comprises a starch styrene/1,3-butadiene graft copolymer.