Modified sulfur, method for preparing same, apparatus for preparing same, and use thereof

Patent metadata

Field	Value
Publication number	US-10179736-B2
Application number	US-201314900102-A
Country	US
Kind code	B2
Filing date	Jun 21, 2013
Priority date	Jun 22, 2012
Publication date	Jan 15, 2019
Grant date	Jan 15, 2019

Abstract

Disclosure relates to modified sulfur, preparation method thereof, preparation equipment thereof. The modified sulfur has spinnability or includes micro-structures such as fiber-, film- and network-like structure. The modified sulfur can be prepared by inducing polymerization with ultrasonic or ageing. The modified sulfur has various excellent features such as anticorrosiveness, waterproofing, strength, and fast drying and can control the features depending on its viscosity or polymerization degree. In addition due to the above features, the modified sulfur can be applied to anticorrosive or waterproofing material and can prepare anticorrosive or waterproofing material which has good workability, hardening, salt spray resistance, and weldability exceeding a certain level, and specially improved adhesiveness. Furthermore, when applying the modified sulfur to asphalt composition, gelation and depression are reduced, properties such as bending strength and tensile strength are improved, and it is possible to obtain asphalt composition with good working stability at RT.

First claim

What is claimed is:

1. Modified sulfur prepared from 100 parts by weight of sulfur, 1˜300 parts by weight of dicyclopentadiene-based modifier and 1˜200 parts by weight of initiator, based on 100 parts by weight of the sulfur,
wherein the initiator comprises at least one selected from the group consisting of asphalt, sulfide, polysulfide, trans cinnamaldehyde, dibuthylphthalate, diiodomethane, isobutylaldehyde, methacylamide, rongalite, nitroethane, formaldehyde hydrate, phenylacetamide, benzyl acetate, dodecyl benzene sulfonic acid, naphthalene, and their combinations,
wherein the modified sulfur has a viscosity of 3,000˜2,000,000 cP at 135° C., and
wherein the modified sulfur comprises micro-structures comprising fiber, or network structure, or the modified sulfur has spinnability.

2. The modified sulfur of claim 1 which comprises at least one additive selected from the group consisting of surfactant, coupling agent, catalyst, crosslinker, dispersant and their combinations.

3. The modified sulfur of claim 2 which is mixed with the additive under solvent, and
wherein the solvent comprises at least one selected from the group consisting of water, amine-based solvent, ester-based solvent, ketone-based solvent, aliphatic or aromatic hydrocarbon-based solvent, ether-based solvent, alcohol-based solvent, polyol solvent, amide solvent, sulfone or sulfoxide solvent, acetate-based solvent, anhydrous inorganic solvent, and their combinations.

4. The modified sulfur of claim 3 which is hydrophilic or hydrophobic.

Assignees

• Korea Inst Sci & Tech

Inventors

• Kim Goo Dae
• Park No Gyung
• Kwon Hyok
• Seo Young Sik
• Yu Seung Gun
• Noh Hyuk Rae

Classifications

• C04B18/04

  Waste materials; Refuse · CPC title

• B01J2219/00166

  controlling the residence time inside the reactor vessel · CPC title

• C04B2111/343

  Crack resistant materials · CPC title

• B01J19/10

  employing sonic or ultrasonic vibrations · CPC title

• B01J2219/00164

  controlling the flow · CPC title