The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jul. 21, 2020
Filed:
Mar. 22, 2017
Applicant:
Kemira Oyj, Helsinki, FI;
Inventors:
Anneli Lepo, Tampere, FI;
Helena Peuranen, Espoo, FI;
Assignee:
Other;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C08F 212/08 (2006.01); C08F 220/18 (2006.01); D21H 19/58 (2006.01); C08F 251/00 (2006.01); D21H 21/10 (2006.01); C09D 151/02 (2006.01); C08F 2/20 (2006.01); C08F 220/14 (2006.01); C08L 3/02 (2006.01); C08K 3/013 (2018.01);
U.S. Cl.
CPC ...
C08F 212/08 (2013.01); C08F 2/20 (2013.01); C08F 220/14 (2013.01); C08F 220/18 (2013.01); C08F 251/00 (2013.01); C08L 3/02 (2013.01); C09D 151/02 (2013.01); D21H 19/58 (2013.01); D21H 21/10 (2013.01); C08F 2500/24 (2013.01); C08F 2800/20 (2013.01); C08K 3/013 (2018.01);
Abstract
The invention relates to an aqueous polymer dispersion having a viscosity of ≤150 m Pas at 40% solids content and comprising polymer particles having a particle size D50 less than 85 nm. The polymer dispersion is obtainable by free radical emulsion copolymerisation of at least monomer (a) and monomer (b), where monomer (a) is at least one optionally substituted styrene and monomer (b) is at least one C1-C4-alkyl (meth)acrylate, in a reaction mixture comprising degraded starch which has an average molecular weight Mn<1000 g/mol. The invention relates also to the use of the polymer dispersion and method for preparing it.