Patent CA-3015597-C (CA)
Title: Composition for modifying rheology of coating colour, its use and a coating colour
Inventor: LEPO ANNELI
IPC: D21H19/44
Filed: 2017-03-22
Granted: 2023-10-17
Abstract: (12) INTERNATIONAL APPLICATION PUBLISHED UNDER THE PATENT COOPERATION TREATY  (PCT) (19) World Intellectual Property Organization International Bureau (10) International Publication Number (43) International Publication Date                   WO 2017/162921 Al 28 September 2017 (28.09.2017) WIPO I PCT (51) International Patent Classification:                                            BZ, CA, CH, CL, CN, CO, CR, CU, CZ, DE, DJ, DK, DM, D21H 19/44 (2006.01)                D21H 19/58 (2006.01) DO, DZ, EC, EE, EG, ES, FI, GB, GD, GE, GH, GM, GT, D21H 19/54 (2006.01)                D21H 19/38 (2006.01) HN, HR, HU, ID, IL, IN, IR, IS, JP, KE, KG, KH, KN, KP, KR, KW, KZ, LA, LC, LK, LR, LS, LU, LY, MA, (21) International Application Number:                                               MD, ME, MG, MK, MN, MW, MX, MY, MZ, NA, NG, PCT/FI2017/050198                        NI, NO, NZ, OM, PA, PE, PG, PH, PL, PT, QA, RO, RS, (22) International Filing Date:                                                      RU, RW, SA, SC, SD, SE, SG, SK, SL, SM, ST, SV, SY, 22 March 2017 (22.03.2017)               TH, TJ, TM, TN, TR, TT, TZ, UA, UG, US, UZ, VC, VN, ZA, ZM, ZW. (25) Filing Language:                      English (84) Designated States (unless otherwise indicated, for every (26) Publication Language:                 English kind of regional protection available): ARIPO (BW, GH, (30) Priority Data:                                                                  GM, KE, LR, LS, MW, MZ, NA, RW, SD, SL, ST, SZ, 20165235          22 March 2016 (22.03.2016) FI    TZ, UG, ZM, ZW), Eurasian (AM, AZ, BY, KG, KZ, RU, TJ, TM), European (AL, AT, BE, BG, CH, CY, CZ, DE, (71) Applicant: KEMIRA OYJ [FI/FI]; Porkkalankatu 3, DK, EE, ES, FI, FR, GB, GR, HR, HU, IE, IS, IT, LT, LU, 00180 Helsinki (FI).                                                                 LV, MC, MK, MT, NL, NO, PL, PT, RO, RS, SE, SI, SK, SM, TR), OAPI (BF, BJ, CF, CG, CI, CM, GA, GN, GQ, (72) Inventors: LEPO, Anneli; Verstaankatu 5 B 38, 33100 GW, KM, ML, MR, NE, SN, TD, TG). Tampere (FI). PEURANEN, Helena; Neljäs Huvilatie 10, 02730 Espoo (FI).                           Declarations under Rule 4.17:  (74) Agent: BERGGREN OY; P.O. Box 99, Tykistökatu 2-4 ¨ of inventorship (Rule 4.17(iv)) B, FI-20521 Turku (FI). Published: = (81) Designated States (unless otherwise indicated, for every with international search report (Art. 21(3)) kind of national protection available): AE, AG, AL, AM, AO, AT, AU, AZ, BA, BB, BG, BH, BN, BR, BW, BY, 1-1 (54) Title: COMPOSITION FOR MODIFYING RHEOLOGY OF COATING COLOUR, ITS USE  AND A COATING COLOUR el (57) Abstract: The invention relates to a composition for modifying rheology of coating colour and its use. The composition com-e...) prises an aqueous polymer dispersion, comprising a copolymer of monomer (a), which is at least one optionally substituted styrene, ,71,19 and monomer (b), which is at least one Cl -C4-alkyl (meth)acrylate. The copolymer has a particle size D50 < 100 nm. Composition comprises also degraded starch having an average molecular weight Mn < 1000 g/mol.