Patent · US Expired

Additives for inhibiting gas hydrate formation

US6177497A · kind A · utility

28Cited by

2References

16Claims

0Family size

Assignee

Clariant Corporation · DE

Inventors

Peter Klug · Großostheim, DE
Frank Holtrup · Hamburg, DE

Key dates

Filing date	Jan 29, 1999
Grant date	Jan 23, 2001
Priority date	—
Expiry date	Jan 29, 2019

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY10S585/95
WIPO fieldBasic materials chemistry
WIPO sectorChemistry

Abstract

The invention relates to an additive for inhibiting gas hydrate formation, containing PA1 a) from 5 to 90% by weight of 2-isobutoxyethanol, PA1 b) from 5 to 60% by weight of a copolymer which has structural units which are derived from maleic acid, maleic anhydride or derivatives of maleic acid or of maleic anhydride, and PA1 c) at least 10% by weight of water or a monohydric or polyhydric alcohol, except the 2-isobutoxyethanol, or mixtures of the stated substances, based on the total weight of the additive, the sum of the contents of compounds a) and b) being from 10 to 90% by weight, and a process for inhibiting gas hydrate formation using 2-isobutoxyethanol.

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