Patent · US Active

Coatings containing polysilazanes for metal and polymer surfaces

US8309228B2 · kind B2 · utility

11Cited by

2References

21Claims

0Family size

Assignee

AZ Electronic Materials (Luxembourg) S.A.R.L. · LU

Inventors

Andreas Dierdorf · Frankfurt, DE
Stefan Brand · Leutershausen, DE
Andreas Wacker · Plochingen, DE
Hubert Liebe · Wiesbaden, DE

Key dates

Filing date	Aug 25, 2006
Grant date	Nov 13, 2012
Priority date	—
Expiry date	Oct 8, 2028

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY10T428/31667
WIPO fieldMacromolecular chemistry, polymers
WIPO sectorChemistry

Abstract

The invention relates to the use of polysilazanes as a permanent coating on metal and polymer surfaces for preventing corrosion, increasing scratch resistance and to facilitate easier cleaning. The invention comprises a solution of a polysilazane or a blend of polysilazanes of the general formula 1—(SiR′R″—NR′″)n— (1)where R′, R″ and R′″ are identical or different and independently of one another represent hydrogen or an optionally substituted alkyl, aryl, vinyl or (trialkoxysilyl)alkyl group and n represents a whole number and is calculated in such a way that the polysilazane has a numerical average molecular weight of 150 to 150 000 g/mol, in a solvent. The invention also relates to a method for producing the coating.

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