Patent · US Expired

Compositions containing addition polymers prepared using crosslinkable protective colloids

US6559259B2 · kind B2 · utility

8Cited by

4References

20Claims

0Family size

Assignee

Wacker Chemie AG · DE

Inventors

Klaus Kohlhammer · Marktl, DE
Gerhard Koegler · Altötting, DE
Monika Rockinger · Unterneukirchen, DE
Walter Dobler · Schwetzingen, DE

Key dates

Filing date	Aug 27, 2001
Grant date	May 6, 2003
Priority date	—
Expiry date	Aug 27, 2021

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC04B2103/0057
WIPO fieldMaterials, metallurgy
WIPO sectorChemistry

Abstract

A water-soluble, crosslinkable protective colloid is provided having a molecular weight of least than 500,000 comprising:a) 20 to 959 by weight of monomer units containing sulphonic acid or sulphonate groups,b) 4 to 800 by weight of monomer units containing N-methylol or N-alkoxymethyl groups, andc) 0.1 to 20% by weight of hydrophobic monomer units such as water insoluble ethylenically unsaturated compounds and the hydrophobic end groups of initiator radicals or regulator molecules. Optionally, up to 50% by weight of the monomer units containing sulphonic acid or sulphonate groups can be replaced by monomer units containing carboxyl groups or monomer units containing amide groups.

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