WIPO logo
Mobile | Deutsch | Español | Français | 日本語 | 한국어 | Português | Русский | 中文 | العربية |
PATENTSCOPE

Search International and National Patent Collections
World Intellectual Property Organization
Options
Query Language
Stem
Sort by:
List Length
Some content of this application is unavailable at the moment.
If this situation persist, please contact us atFeedback&Contact
1. (WO2005068365) INTERCALATED LAYERED MATERIALS PARTICULARLY NANOCLAYS
Latest bibliographic data on file with the International Bureau   

Pub. No.: WO/2005/068365 International Application No.: PCT/IN2004/000008
Publication Date: 28.07.2005 International Filing Date: 13.01.2004
Chapter 2 Demand Filed: 08.08.2005
IPC:
C01B 33/44 (2006.01) ,C08K 7/26 (2006.01)
C CHEMISTRY; METALLURGY
01
INORGANIC CHEMISTRY
B
NON-METALLIC ELEMENTS; COMPOUNDS THEREOF
33
Silicon; Compounds thereof
20
Silicates
36
having base-exchange properties but not having molecular sieve properties
38
Layered base-exchange silicates, e.g. clays, micas or alkali metal silicates of kenyaite or magadiite type
44
Products obtained from layered base-exchange silicates by ion-exchange with organic compounds such as ammonium, phosphonium or sulfonium compounds or by intercalation of organic compounds, e.g. organoclay material
C CHEMISTRY; METALLURGY
08
ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
K
USE OF INORGANIC OR NON-MACROMOLECULAR ORGANIC SUBSTANCES AS COMPOUNDING INGREDIENTS
7
Use of ingredients characterised by shape
22
Expanded, porous or hollow particles
24
inorganic
26
Silicon-containing compounds
Applicants: BANERJI, Sujit[IN/IN]; IN (UsOnly)
KULSHRESHTHA, Anand, Kumar[IN/IN]; IN (UsOnly)
RAO, Karumanchi, Venkateswara[IN/IN]; IN (UsOnly)
PATIL, Anil, Vitthal[IN/IN]; IN (UsOnly)
MAITI, Ajit, Kumar[IN/IN]; IN (UsOnly)
XAVIER, Sodagudi, Francis[IN/IN]; IN (UsOnly)
INDIAN PETROCHEMICALS CORPORATION LIMITED[IN/IN]; P.O. Petrochemicals District Vadodara 391 346 Gujarat, IN (AllExceptUS)
RELIANCE INDUSTRIES LTD.[IN/IN]; Makers Chambers-IV Nariman Point Mumbai 400 021 Maharashtra, IN (AllExceptUS)
Inventors: BANERJI, Sujit; IN
KULSHRESHTHA, Anand, Kumar; IN
RAO, Karumanchi, Venkateswara; IN
PATIL, Anil, Vitthal; IN
MAITI, Ajit, Kumar; IN
XAVIER, Sodagudi, Francis; IN
Agent: SUBRAMANAM, Hariharan ; Subramaniam, Nataraj & Associates E-556, Greater Kailash-II New Delhi 110 048, IN
Priority Data:
Title (EN) INTERCALATED LAYERED MATERIALS PARTICULARLY NANOCLAYS
(FR) MATERIAUX EN COUCHES INTERCALEES UN PARTICULIER DE NANO-ARGILES
Abstract:
(EN) Exfoliated nanoclays and a process for the preparation of exfoliated nanoclays from ordinary layered smectic clays [such as bentonite mineral clay] is described. The procedure by which exfoliation occurs in clay is by insertion of intercalants (chemicals/swelling agents/solvents/ monomers/ polymers). The intercalants may or may not form a compound with clay and after appropriate time interval may be kept in a heat sink. This process disturbs regularity in the arrangement of layers. By this process it is possible to obtain partially or fully exfoliated nanoclays. Since in the present invention there is direct exfoliation, no spacing exists in the completely disordered stacks of nanoclay. Nanoclays are very useful in improving the properties of thermoplastics and thermoset matrices by formation of nanocomposites. In the example shown above, tensile strength-at-break in PP nanocomposites goes up 350% in comparison with that obtained using 'Cloisite 20A', although at a slight reduction in impact strength.
(FR) La présente invention concerne des nano-argiles exfoliées et un processus de préparation de ces nano-argiles exfoliées à partir d'argile smectique en couches ordinaires (telles que les argiles minérales bentonite). La procédure par laquelle l'exfoliation survient dans l'argile est obtenue par l'insertion d'éléments intercalés (agents chimiques/gonflants/solvants/monomères/polymères). Ces éléments intercalaires peuvent former ou ne pas former un composé avec l'argile et après un intervalle de temps approprié peuvent être conservé dans un puits de chaleur. Ce processus perturbe la régularité de l'agencement des couches. Par ce processus il est possible d'obtenir des nano-argiles partiellement ou complètement exfoliées. Comme cette invention n'est pas une exfoliation directe, il n'existe pas d'espacement dans les piles complètement désordonnées de nano-argile. Des nano-argiles conviennent très bien pour améliorer les propriétés de thermoplastiques et de matrices thermodurcies par la formation de nanocomposites. Dans l'exemple montré ci-dessus, la résistance à la rupture dans des nanocomposites PP augmente de 350 % par rapport à celle obtenu par utilisation de'Cloisite 20A', malgré une légère réduction de la résistance au choc.
front page image
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, HR, HU, ID, IL, IN, IS, JP, KE, KG, KP, KR, KZ, LC, LK, LR, LS, LT, LU, LV, MA, MD, MG, MK, MN, MW, MX, MZ, NA, NI, NO, NZ, OM, PG, PH, PL, PT, RO, RU, SC, SD, SE, SG, SK, SL, SY, TJ, TM, TN, TR, TT, TZ, UA, UG, US, UZ, VC, VN, YU, ZA, ZM, ZW
African Regional Intellectual Property Organization (ARIPO) (BW, GH, GM, KE, LS, MW, MZ, SD, SL, SZ, TZ, UG, ZM, ZW)
Eurasian Patent Office (AM, AZ, BY, KG, KZ, MD, RU, TJ, TM)
European Patent Office (EPO) (AT, BE, BG, CH, CY, CZ, DE, DK, EE, ES, FI, FR, GB, GR, HU, IE, IT, LU, MC, NL, 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)