Patent · US Active

Process for coating exterior surfaces of pipelines with water cross-linkable polymer

US8192798B2 · kind B2 · utility

2Cited by

6References

7Claims

0Family size

Assignees

Basell Polyolefine GmbH · DE
Mulheim Pipecoatings GmbH · DE

Inventors

Heinz Vogt · Ludwigshafen, DE
Peter Josef Gronsfeld · Oldenburg, DE
Klaus Schmidt

Key dates

Filing date	Jun 9, 2006
Grant date	Jun 5, 2012
Priority date	—
Expiry date	May 7, 2029

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY10T428/1393
WIPO fieldSurface technology, coating
WIPO sectorChemistry

Abstract

A process for coating the exterior surfaces of a pipeline with a polymer that is cross-linkable under exposure to water, including a) coating the exterior surface of the pipeline with at least one polymer that is cross-linkable under exposure to water, where the employed cross-linkable polymer includes alkoxy silane grafted HDPE; and b) cross-linking of the cross-linkable polymer by exposure to water at elevated temperatures so as to form a cross-linked polymer layer having a degree of cross-linking of from 30% to 80% is reached.

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