# US 5,700,574 A · Sizing composition for glass roving

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- Number: US 5,700,574 A
- Document ID: US5700574A
- Status: Granted
- Kind: A
- Application number: 08/485,746
- Filed: 1995-06-07
- Granted: 1997-12-23
- Earliest claimed: 1994-08-17
- Assignees: Owens Corning Fiberglas Technology, Inc.
- Inventors: Martin C. Flautt; Leonard J. Adzima; Douglas B. Mann
- Web page: https://patentgrep.com/patent/US5700574A

## CPC

- C03C 25/26: Macromolecular compounds or prepolymers
- C03C 25/12: General methods of coating; Devices therefor
- C03C 25/20: Contacting the fibres with applicators, e.g. rolls
- Y10S 65/90: Drying, dehydration, minimizing oh groups
- Y10T 428/2933: Coated or with bond, impregnation or core
- Y10T 428/2962: Silane, silicone or siloxane in coating
- Y10T 428/2964: Artificial fiber or filament
- C03C: CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
- Y10S: TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10T: TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION

## Abstract

A sizing composition for glass is provided. The sizing composition comprises a vinyl acetate copolymer emulsion, a polyvinyl acetate copolymer latex, and a vinyl acrylic copolymer emulsion.

## Claims

### Claim 1

A sizing composition for glass comprising a vinyl acetate copolymer emulsion, a polyvinyl acetate copolymer latex, and a vinyl acrylic copolymer emulsion.

### Claim 2 (depends on 1)

The sizing composition of claim 1 further comprising one or more silane coupling agents.

### Claim 3 (depends on 2)

The sizing composition of claim 2 further comprising a lubricant.

### Claim 4 (depends on 3)

The sizing composition of claim 3 wherein said lubricant is selected from the group consisting of amines and fatty acid esters.

### Claim 5 (depends on 4)

The sizing composition of claim 4 further comprising an antistatic agent.

### Claim 6 (depends on 5)

The sizing composition of claim 5 further comprising a wetting agent.

### Claim 7 (depends on 6)

The sizing composition of claim 6 further comprising acetic acid.

### Claim 8 (depends on 1)

The sizing composition of claim 1 wherein said vinyl acetate copolymer emulsion is present in said sizing composition in a solids weight percent of from about 2.5 to about 12.5 percent.

### Claim 9 (depends on 8)

The sizing composition of claim 8 wherein said vinyl acetate copolymer emulsion is present in said sizing composition in a solids weight percent of from about 5 to about 7.5 percent.

### Claim 10 (depends on 9)

The sizing composition of claim 9 wherein said vinyl acetate copolymer emulsion is present in said sizing composition in a solids weight percent of about 6.5 percent.

### Claim 11 (depends on 1)

The sizing composition of claim 1 wherein said polyvinyl acetate copolymer latex is present in said sizing composition in a solids weight percent of from about 0.25 to about 2.5 percent.

### Claim 12 (depends on 11)

The sizing composition of claim 11 wherein said polyvinyl acetate copolymer latex is present in said sizing composition in a solids weight percent of from about 0.5 to about 1.5 percent.

### Claim 13 (depends on 12)

The sizing composition of claim 12 wherein said polyvinyl acetate copolymer latex is present in said sizing composition in a solids weight percent of about 1 percent.

### Claim 14 (depends on 1)

The sizing composition of claim 1 wherein said vinyl acrylic copolymer emulsion is present in said sizing composition in a solids weight percent of from about 0.25 to about 2.5 percent.

### Claim 15 (depends on 14)

The sizing composition of claim 14 wherein said vinyl acrylic copolymer emulsion is present in said sizing composition in a solids weight percent of from about 0.5 to about 1.5 percent.

### Claim 16 (depends on 15)

The sizing composition of claim 15 wherein said vinyl acrylic copolymer emulsion is present in said sizing composition in a solids weight percent of about 1 percent.

### Claim 17

A product comprising glass fiber coated with a sizing composition comprising a vinyl acetate copolymer emulsion, a polyvinyl acetate copolymer latex, and a vinyl acrylic copolymer emulsion.

### Claim 18 (depends on 17)

The product of claim 17 wherein said vinyl acetate copolymer emulsion is present in said sizing composition in a solids weight percent of from about 2.5 to about 12.5 percent.

### Claim 19 (depends on 17)

The product of claim 17 wherein said polyvinyl acetate copolymer latex is present in said sizing composition in a solids weight percent of from about 0.25 to about 2.5 percent.

### Claim 20 (depends on 17)

The composition of claim 17 wherein said vinyl acrylic copolymer emulsion is present in said sizing composition in a solids weight percent of from about 0.25 to about 2.5 percent.