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Class Information
Number: 526/65
Name: Synthetic resins or natural rubbers -- part of the class 520 series > Synthetic resins (class 520, subclass 1) > Polymerizing in two or more physically distinct zones
Description: Subject matter under Class 520, ... wherein polymerization is effected in at least two or more physically distinct zones, (e.g., regions, stages, etc.) said zones being part of a single reactor which has a plurality of such physically distinct zones or such zones may be part of separate polymerization reactors which are interconnected at some point.
Sub-classes under this class:
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 7619046 |
Production of polymers in a conical reactor |
Nov. 17, 2009 |
| 7615606 |
Method and device for continuously producing copolyamides with melting points greater than 265.degree. C. |
Nov. 10, 2009 |
| 7608225 |
Tower reactor and use thereof for the continuous production of high molecular weight polyesters |
Oct. 27, 2009 |
| 7601787 |
Ethylene polymerization process |
Oct. 13, 2009 |
| 7592410 |
Polyethylene resin with narrow particle size distribution |
Sep. 22, 2009 |
| 7585924 |
Pressurized high temperature polymerization process and polymerization system used therein |
Sep. 8, 2009 |
| 7579414 |
Fine-particled amphoteric aqueous polymer dispersion method for production and use thereof |
Aug. 25, 2009 |
| 7579422 |
Propylene random copolymer and process for the production thereof |
Aug. 25, 2009 |
| 7576166 |
Process for the production of linear low-density polyethylene composition |
Aug. 18, 2009 |
| 7572871 |
Method of producing water-soluble nonturbid copolymers of at least one water-soluble N-vinyllactam and at least one hydrophobic comonomer |
Aug. 11, 2009 |
| 7553916 |
Loop reactor with varying diameter for olefin polymerization |
Jun. 30, 2009 |
| 7531605 |
Process for producing polyolefin resin composition and polypropylene composition |
May. 12, 2009 |
| 7524897 |
Film with high impact strength |
Apr. 28, 2009 |
| 7524903 |
Process and apparatus for the polymerization of propylene |
Apr. 28, 2009 |
| 7521507 |
Polypropylene-based adhesive compositions |
Apr. 21, 2009 |
| 7517938 |
Loop reactor with varying diameter for olefin polymerization |
Apr. 14, 2009 |
| 7517947 |
Polymer transfer within a polymerization system |
Apr. 14, 2009 |
| 7514508 |
Process for the polymerization of ethylene |
Apr. 7, 2009 |
| 7504141 |
Shrink film |
Mar. 17, 2009 |
| 7482409 |
Process for producing ethylene-.alpha.-olefin-polyene copolymer |
Jan. 27, 2009 |
| 7473745 |
Preparation of multimodal polyethylene |
Jan. 6, 2009 |
| 7470756 |
Propylene random copolymer and process for the production thereof |
Dec. 30, 2008 |
| 7465772 |
Apparatus for continuous polymerization of olefin, method for transferring a polymer powder, and method for continuous polymerization of olefin |
Dec. 16, 2008 |
| 7452953 |
Propylene random copolymer and process for the production thereof |
Nov. 18, 2008 |
| 7442743 |
Propylene polymer resin with improved properties |
Oct. 28, 2008 |
| 7423109 |
Polyester process using a pipe reactor |
Sep. 9, 2008 |
| 7423099 |
Process for producing polyolefin |
Sep. 9, 2008 |
| 7423098 |
Polyethylene process |
Sep. 9, 2008 |
| 7420026 |
Polyester process using a pipe reactor |
Sep. 2, 2008 |
| 7414098 |
Gas-phase catalytic polymerization of olefins |
Aug. 19, 2008 |
| 7405260 |
Method for controlling the polymer flow in a polymerization process |
Jul. 29, 2008 |
| 7396892 |
Process for removal of intermediate hydrogen from cascaded polyolefin slurry reactors |
Jul. 8, 2008 |
| 7388059 |
Ethylene polymer, catalyst for producing thereof and method for producing thereof |
Jun. 17, 2008 |
| 7378472 |
Injection moulding polymer |
May. 27, 2008 |
| 7365136 |
High melt strength polypropylene |
Apr. 29, 2008 |
| 7354979 |
Polymer production at supercritical conditions |
Apr. 8, 2008 |
| 7351777 |
Retarded anionic polymerization of vinyl aromatic monomers using insoluble or heterogeneous retardants |
Apr. 1, 2008 |
| 7351776 |
Bulk polymerization process |
Apr. 1, 2008 |
| 7348381 |
High modulus, high ductility polyolefins |
Mar. 25, 2008 |
| 7345139 |
Polyester process using a pipe reactor |
Mar. 18, 2008 |
| 7332556 |
Crystalline polymers of propylene having improved processability in the molten state and process for their preparation |
Feb. 19, 2008 |
| 7332561 |
Polytrimethylene terephthalate composition particles and process for producing same |
Feb. 19, 2008 |
| 7323528 |
Block copolymers containing functional groups |
Jan. 29, 2008 |
| 7256240 |
Process of making polymer blends |
Aug. 14, 2007 |
| 7256239 |
Polymer film |
Aug. 14, 2007 |
| 7253239 |
Method for preventing or inhibiting fouling in a gas-phase polyolefin polymerization process |
Aug. 7, 2007 |
| 7250473 |
Multimodal polyolefin pipe |
Jul. 31, 2007 |
| 7235618 |
Polypropylene polymers |
Jun. 26, 2007 |
| 7235624 |
Charge dissipation modifiers for olefinic interpolymer compositions |
Jun. 26, 2007 |
| 7232866 |
Ethylene polymer composition |
Jun. 19, 2007 |
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