# US 5,703,165 A · Method of achieving superior dispersions of insoluble sulfur and products thereof

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- Number: US 5,703,165 A
- Document ID: US5703165A
- Status: Granted
- Kind: A
- Application number: 08/464,188
- Filed: 1995-06-05
- Granted: 1997-12-30
- Earliest claimed: 1992-12-18
- Assignees: Saynad Corporation; The Brands Family Illinois Limited Partnership
- Inventors: George B. Brands
- Web page: https://patentgrep.com/patent/US5703165A

## CPC

- C08K 3/06: Sulfur
- C08K: Use of inorganic or non-macromolecular organic substances as compounding ingredients (paints, inks, varnishes, dyes, polishes, adhesives C09)

## Abstract

A method of achieving a novel superior dispersion of insoluble sulfur comprises mixing polysulfur while it is in the rubbery state with a diluent, such as rubber, to obtain a novel uniform dispersion of the sulfur in the diluent.

## Claims

### Claim 1

A method of preparing a blend of a vulcanizable polymer and insoluble sulfur which comprises using as the insoluble sulfur an insoluble sulfur which is in a metastable, elastic unhardened state, said insoluble sulfur having had its metastable state preserved by lowering its temperature below its glass transition temperature.

### Claim 2

A uniform blend comprised of insoluble sulfur and a vulcanizable polymer, said insoluble sulfur having been initially dispersed while in a metastable, elastic, unhardened state and being present in an amount of about 0.8 parts to 8.0 parts per 100 parts of the vulcanizable polymer.