Title of Invention

"ADSORBING MATERIAL COMPRISED OF POROUS FUNCTIONAL SOLID INCORPORATERD IN A POLYMER MATRIX"

Abstract An adsorbing material comprising at least one porous functional solid incorporated in a polymer matrix; said adsorbing material containing the porous functional solid in an amount of 45 to 80 wt.% relative to the weight of the finished and activated adsorbing material, and said polymer matrix comprising at least one organic polymer, and having a secondary pore volume in addition to the primary pore volume of the porous functional solid.
Full Text The present invention relates to an adsorbing material having an enhanced water adsorption capacity which comprises at least one porous functional solid incorporated in a polymer matrix, particularly selected from thermoplastics. It further relates to a shaped article which comprises or consists of the aforementioned adsorbing material, to a method for its preparation and to its use-Known examples of porous functional solids are zeolites, as well as other alumino-silicates with functional. properties, silica gels, silica-cogels as well as silica gels, silica-cogels which . are coated or impregnated with or chemically bonded to functional chemical coumpounds. Functional activities mean specific and unspecific adsorption and desorption of molecules which are useful for any gas and liquid drying, enrichment or purification in a broad variety of industries such as chemical, petrochemical, gas and oil processing industries, fruit and beverage industry. Furthermore, they are applicable as desiccants and separating agents for analysis, preparation and drying processes in the diagnostic, pharmaceutical, cosmetic, and nutrition industries .




WE CLAIM:
1. A shaped article comprising or consisting of an adsorbing material, wherein the
adsorbing material comprises at least one porous functional solid in an amount of 45 to
80 wt.% relative to the weight of the finished and activated adsorbing material, and said
polymer matrix comprising at least one organic polymer, and having a secondary pore
volume in addition to the primary pore volume of the porous functional solid,
the amount of the organic polymer is 20 to 55% relative to the weight of the finished and activated adsorbing material,
the shaped article has a water adsorption capacity as measured at 80% relative humidity and at 25 °C of at least 189 wt% (relative to the weight of the finished and activated shaped article),
the compressive strength of 150 N/mm2 or higher, preferably 80 N/mm2 or higher and more preferably 50 N/mm or higher as measured by tensile/compressive testing machine model 1455 from Zwick with a 20 kN gauge from Zwick and a piston displacement rate of lmm/min.
2. The shaped article as claimed in claim 1, wherein the adsorbing material has the porous functional solid is adsorbing agent.
3. The shaped article as claimed in claim 2, wherein absorbing agent selected from zeolites of the groups 1, 2, 3, 4, 5, 6 and 7, compositions with structures iso-type, respectively, iso-morphous to the aforementioned types of zeolites, silica gels, silica-cogels and any combination thereof.
4. The shaped article as claimed in claim 3, wherein the zeolites of the groups 1, 2, 3,4, 5,6 and 7 are selected from the members of the zeolite families A, X and Y.
5. The shaped article as claimed in claims 1 to 4, wherein the decomposition temperature of the organic polymer is 180 to 450°C, preferably 230 to 400°C and more preferably 250 to 380°C, provided that the organic polymer is subjected to heat treatment at said decomposition temperatures for a duration of at least lh.
6. The shaped article as claimed in claims 1 to 5, wherein the melting temperature of the organic polymer is 100 to 390°C, preferably 180 to 300°C and more preferably 220 to 270°C.
7. The shaped article as claimed in claims 1 to 6, wherein the organic polymer is selected from thermoplastics.
8. The shaped article as claimed in claim 7, wherein the thermoplastics are selected from a polyamide, polyether sulphone, polyolefin, polyamide imide, polyethylene terephthalate and any combination thereof.
9. The shaped article as claimed in claim 8, wherein the polyamide is a polyamide 66, polyamide 66/6, polyamide 46 or any combination thereof.
10. The shaped article as claimed in claims 1 to 9 having a honeycombed, cylindrical or spherical geometry.
11. A method for preparing a shaped article as claimed in claim 1, said method comprising the steps of:

a) forming a compound comprising at least one porous functional solid, at least one organic polymer and at least one removable rheological additive;.
b) shaping said compound into a green body;
c) substantially or at least partially removing said rheological additive from the green body; and
d) optionally activating the green body obtained from step c) at a temperature of at least 90 °C.

12. The method as claimed in claim 11, wherein the compound of step a) comprises 40 to 70 wt.% of porous functional solid, 20 to 50 wt.% of organic polymer and 0.5 to 25 wt.% of removable rheological additive, in each case relative to the weight of the total compound.
13. The method as claimed in claim 11 or 12, wherein the removable rheological additive has an evaporation and/or decomposition temperature of 140°C to 300°C, preferably from
160°C to 240°C and more preferably from 180°C to 220°C, provided that the removable rheological additive is subjected to heat treatment at said evaporation and/or decomposition temperatures, for a duration of at least lh.
14. The method as claimed in any of claims 11 to 13, wherein the removable rheological additive is selected from waxy components and/or oils.
15. The method as claimed in claim 14, wherein the waxy compound is selected from natural waxes, semi-synthetic waxes, synthetic waxes, modified, oxidized or microcrystalline forms of the aforementioned waxes and any combinations thereof.
16. The method as claimed in claim 14 or 15, wherein the waxy component is a synthetic wax, preferably a polyolefln wax, ethylene-vinyl acetate copolymer, ethylene-vinyl alcohol, polyolefln glycol, amide wax or any combinations thereof.
17. The method as claimed in any of claims 11 to 16, wherein steps a) and b) are carried out continuously.
18. The method as claimed in any of claims 11 to 17, wherein in step b) shaping of said compound into said green body is performed by extrusion or injection molding.
19. The method as claimed in any one of claims 11 to 18, wherein in step c) the rheological additive is removed by heat treatment, extraction, particularly solvent extraction, and any combinations thereof.
20. The method as claimed in claim 19, wherein the heat treatment is carried out at a temperature of 140°C to 300°C preferably 160°C to 240°C and more preferably 180°C to
220°C.
21. The method as claimed in claim 20, wherein the heat treatment period is from 1 h to 36 h, preferably from 8 to 24 h and more preferably from 12 to 24 h.
22. The method as claimed in claim 19, wherein solvent extraction is used, optionally supported by ultrasonic treatment.
23. The method as claimed in claim 22 wherein the solvent extraction is carried out at a temperature of 20°C to 120°C, preferably 50°C to 90°C and more preferably 60°C to 80°C.
24. The method as claimed in claim 22 or 23, wherein the solvent extraction period is from 1 h to 36 h, preferably from 8 to 24 h and more preferably from 12 to 24 h.
25. The method as claimed in one of claims 22 to 24, wherein the extracting solvent is selected from water, C1-C6 alcohols, C3-C8 ketones and any combination thereof.
26. The method as claimed in claim 25 wherein the extracting solvent further comprises at least one emulsifier.
27. The method as claimed in any of claims 22 or 26, wherein, the green body obtained from step c) is further activated at a temperature from 90 °C to 240 °C, preferably from 90 °C to 220°C and more preferably 160 to 220°C.
28. The method as claimed in claim 27, wherein the activation period is from 1 h to 8 h, preferably from 1 h to 6 h and more preferably from 1 h to 4 h.



Documents:

1914-DELNP-2004-Abstract-(09-02-2010).pdf

1914-delnp-2004-claims (30-06-2011).pdf

1914-DELNP-2004-Claims-(09-02-2010).pdf

1914-DELNP-2004-Correspondence-Others (09-02-2010).pdf

1914-delnp-2004-correspondence-others (30-06-2011).pdf

1914-DELNP-2004-Correspondence-Others-(28-09-2010).pdf

1914-DELNP-2004-Description (Complete)--(09-02-2010).pdf

1914-DELNP-2004-Drawings-(09-02-2010).pdf

1914-DELNP-2004-Form-1-(09-02-2010).pdf

1914-delnp-2004-form-3 (30-06-2011).pdf

1914-DELNP-2004-Form-3-(28-09-2010).pdf

1914-DELNP-2004-GPA-(09-02-2010).pdf


Patent Number 248332
Indian Patent Application Number 1914/DELNP/2004
PG Journal Number 27/2011
Publication Date 08-Jul-2011
Grant Date 05-Jul-2011
Date of Filing 05-Jul-2004
Name of Patentee GRACE GMBH & CO. KG,
Applicant Address IN DER HOLLERHECKE 1, 67547 WORMS, GERMANY,
Inventors:
# Inventor's Name Inventor's Address
1 HANS-G FRITZ, GOTENWEG, 10, D-73066 UHINGEN, GERMANY,
2 JOCHEN HAMMER, BEHLESTR. 8, D-70329 STUTTGART, GERMANY
3 HANS H. HOFER, BERGSTR. 30, D-67593 WESTHOFEN, GERMANY,
PCT International Classification Number B01J20/18
PCT International Application Number PCT/EP02/14666
PCT International Filing date 2002-12-20
PCT Conventions:
# PCT Application Number Date of Convention Priority Country
1 01131056.2 2001-12-31 EUROPEAN UNION