Patent · US Active

Coated proppants for fracking extraction methods

US10995264B2 · kind B2 · utility

0Cited by

4References

10Claims

0Family size

Assignee

Wacker Chemie AG · DE

Inventors

Thomas Bastelberger · Emmerting, DE
Abdulmajid Hashemzadeh · Altötting, DE
Stephan Karpfhammer · Stammham, DE
Arndt Schlosser · Stammham, DE

Key dates

Filing date	Sep 30, 2016
Grant date	May 4, 2021
Priority date	—
Expiry date	Feb 3, 2037

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY10T428/2995
WIPO fieldMacromolecular chemistry, polymers
WIPO sectorChemistry

Abstract

The invention relates to coated support means for fracking mining methods, containing an inorganic substrate material and a coating containing polymers of one or more ethylenically unsaturated monomers from the group containing vinyl esters of unbranched or branched alkyl carboxylic acids with 1 to 15 C atoms, methacrylic acid esters and acrylic acid esters of alcohols with 1 to 15 C atoms, vinyl aromatics, olefins, dienes and vinyl halides, characterised in that the polymers are obtained by means of radical-initiated polymerisation in an aqueous medium, wherein 0.5 to 20 wt. % of ethylenically unsaturated and silane group-containing monomers are copolymerised, in relation to the total weight of the monomers.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.