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1. (WO2007091961) MICROSPHERES
Latest bibliographic data on file with the International Bureau   

Pub. No.:    WO/2007/091961    International Application No.:    PCT/SE2007/050012
Publication Date: 16.08.2007 International Filing Date: 12.01.2007
Chapter 2 Demand Filed:    11.09.2007    
B01J 13/14 (2006.01), D21H 21/54 (2006.01), D06N 3/00 (2006.01)
Applicants: AKZO NOBEL N.V. [NL/NL]; P.O. Box 9300, (velperweg 76 / 6824 Bm), NL-6800 SB Arnhem (NL) (For All Designated States Except US).
EKA CHEMICALS AB [SE/SE]; S-445 80 Bohus (SE) (SE only).
NORDIN, Ove [SE/SE]; (SE) (For US Only).
STRÖM, Heléne [SE/SE]; (SE) (For US Only).
NYHOLM, Christina [SE/SE]; (SE) (For US Only).
KRON, Anna [SE/SE]; (SE) (For US Only)
Inventors: NORDIN, Ove; (SE).
STRÖM, Heléne; (SE).
NYHOLM, Christina; (SE).
KRON, Anna; (SE)
Agent: JÖNSSON, Christer; Eka Chemicals AB, Intellectual Property, P.O. Box 11556, S-100 61 Stockholm (SE)
Priority Data:
06101507.9 10.02.2006 EP
Abstract: front page image
(EN)The invention relates to thermally expandable thermoplastic microspheres comprising a polymer shell made from ethylenically unsaturated monomers encapsulating a propellant, said ethylenically unsaturated monomers comprising from 20 to 80 wt% of acrylonitrile, from 20 to 80 wt% of monomers selected from the group consisting of esters of acrylic acid, from 0 to 10 wt% of methacrylonitrile, from 0 to 40 wt% of monomers selected from the group consisting of esters of methacrylic acid, the total amount of acrylonitrile and esters of acrylic acid constituting from 50 to 100 wt% of said ethylenically unsaturated monomers, and said propellant comprising at least one of methane, ethane, propane, isobutane, n-butane and isopentane. The invention further relates to the production and use of the microspheres.
(FR)L'invention concerne des microsphères thermoplastiques thermo-expansibles comprenant une enveloppe polymère constituée de monomères éthyléniquement insaturés encapsulant un agent propulsif, ces monomères éthyléniquement insaturés comprenant de 20 à 80% en poids d'acrylonitrile, de 20 à 80% en poids de monomères choisis dans le groupe constitué d'esters d'acide acrylique, de 0 à 10% en poids de méthacrylonitrile, de 0 à 40% en poids de monomères choisis dans le groupe constitué d'esters d'acide méthacrylique, la quantité totale d'acrylonitrile et d'esters d'acide acrylique constituant de 50 à 100% en poids desdits monomères éthyléniquement insaturés et ledit agent propulsif comprenant au moins un des gaz suivants : méthane, éthane, propane, isobutane, n-butane et isopentane. L'invention concerne également la production et l'utilisation de ces microsphères.
Designated States: AE, AG, AL, AM, AT, AU, AZ, BA, BB, BG, BR, BW, BY, BZ, CA, CH, CN, CO, CR, CU, CZ, DE, DK, DM, DZ, EC, EE, EG, ES, FI, GB, GD, GE, GH, GM, GT, HN, HR, HU, ID, IL, IN, IS, JP, KE, KG, KM, KN, KP, KR, KZ, LA, LC, LK, LR, LS, LT, LU, LV, LY, MA, MD, MG, MK, MN, MW, MX, MY, MZ, NA, NG, NI, NO, NZ, OM, PG, PH, PL, PT, RO, RS, RU, SC, SD, SE, SG, SK, SL, SM, SV, SY, TJ, TM, TN, TR, TT, TZ, UA, UG, US, UZ, VC, VN, ZA, ZM, ZW.
African Regional Intellectual Property Organization (BW, GH, GM, KE, LS, MW, MZ, NA, SD, SL, SZ, TZ, UG, ZM, ZW)
Eurasian Patent Organization (AM, AZ, BY, KG, KZ, MD, RU, TJ, TM)
European Patent Office (AT, BE, BG, CH, CY, CZ, DE, DK, EE, ES, FI, FR, GB, GR, HU, IE, IS, IT, LT, LU, LV, MC, NL, PL, PT, RO, SE, SI, SK, TR)
African Intellectual Property Organization (BF, BJ, CF, CG, CI, CM, GA, GN, GQ, GW, ML, MR, NE, SN, TD, TG).
Publication Language: English (EN)
Filing Language: English (EN)