公开(公告)号：JPH11335465A

公开(公告)日：1999-12-07

申请号：JP34272998

申请日：1998-12-02

Applicant: UNION CARBIDE CHEM PLASTIC

Inventor： KHANIN DAVID ,  SCAROLA LEONARD SEBASTIAN

IPC: C08J3/00 ,  B29B7/84 ,  B29C48/76 ,  B29K101/12 ,  C08F6/00 ,  C08F6/10 ,  C08G63/88 ,  C08J11/02 ,  B29C47/76

Abstract: PROBLEM TO BE SOLVED: To provide a method for reducing or excluding a gaseous impurity in e resin melt in which the gaseous impurity has an ultralow diffusion rate or from the resin melt. SOLUTION: This method for removing a volatile material from a thermoplastic polymer containing a gaseous impurity in an apparatus equipped with a melting part, a mixing part and a vacuum part and comprises the following: (a) a step for adding a granular foaming agent directly or in a masterbatch to a polymer before introducing the polymer into the melting part or adding a gaseous foaming agent to the mixing part, (b) a step for melting the polymer in the mixing part, (c) a step for mixing the molten polymer with the foaming agent in the mixing part under a pressure sufficient to maintain the foaming agent in the mixture, (d) a step for decomposing the granular foaming agent in the mixing part and/or the vacuum part at a temperature sufficient for decomposition and expansion or expanding the gaseous foaming agent in the vacuum part, (e) a step for reducing the pressure of the molten polymer at the surface by an amount sufficient to remove essentially all the gaseous impurity in the vacuum part, (f) a step for suitably repeating the steps (c), (d) and (e) at least once and (g) and a step for recovering the polymer in an essentially unexpanded state.

公开(公告)号：ES2169840T3

公开(公告)日：2002-07-16

申请号：ES97309698

申请日：1997-12-02

Applicant: UNION CARBIDE CHEM PLASTIC

Inventor： NEUBAUER ANTHONY CHARLES ,  SCAROLA LEONARD SEBASTIAN

IPC: C08J3/20 ,  B29C47/68 ,  C08J5/18 ,  C08L23/04 ,  C08L23/06 ,  C08L23/08

公开(公告)号：AU733533B2

公开(公告)日：2001-05-17

申请号：AU9521498

申请日：1998-12-03

Applicant: UNION CARBIDE CHEM PLASTIC

Inventor： KHANIN DAVID ,  SCAROLA LEONARD SEBASTIAN

IPC: C08J3/00 ,  B29B7/84 ,  B29C48/76 ,  B29K101/12 ,  C08F6/00 ,  C08F6/10 ,  C08G63/88 ,  C08J11/02

Abstract: A process for the devolatilization of a thermoplastic polymer containing gaseous impurities in an apparatus having a melting zone, a mixing zone, and a reduced pressure zone, comprising: (a) (i) adding a granular blowing agent directly or via a masterbatch to the polymer prior to the introduction of the polymer into the melting zone, said blowing agent being added in an amount of about 1 to about 4 percent by weight based on the weight of the polymer or (ii) adding a gaseous blowing agent to the mixing zone; (b) melting the polymer in the melting zone; (c) mixing the molten polymer and blowing agent in the mixing zone under sufficient pressure to maintain the blowing agent in the mixture; (d) at a temperature sufficient for decomposition or expansion, (i) decomposing the granular blowing agent in the mixing zone and/or in the reduced pressure zone or (ii) expanding the gaseous blowing agent in the reduced pressure zone wherein the blowing agent in its decomposed or expanded state develops froth cells in the molten polymer; (e) in the reduced pressure zone, reducing the pressure at the surface of the molten polymer in a sufficient amount to remove essentially all of the gaseous impurities; (f) optionally, repeating steps (c), (d), and (e) at least once; and (g) recovering the polymer in an essentially unfoamed state. e

公开(公告)号：BR9910984A

公开(公告)日：2001-02-13

申请号：BR9910984

申请日：1999-06-08

Applicant: UNION CARBIDE CHEM PLASTIC

Inventor： KAY THOMAS WAYNE ,  WANG DUAN-FAN ,  KANTZ JOHN FRANCIS ,  SCAROLA LEONARD SEBASTIAN

IPC: B65D88/64

Abstract: There is provided a process and an apparatus utilizing a grid having two or more cells wherein a majority of the cells have a height (H) to effective diameter (ED) ratio (H/ED) equal to or greater than 1.0, preferably equal to or greater than 1.5, for reducing or eliminating consolidation forces on a bulk solid in a vessel such as one used for storage and transport.

公开(公告)号：DE69033470T2

公开(公告)日：2000-08-10

申请号：DE69033470

申请日：1990-09-27

Applicant: UNION CARBIDE CHEM PLASTIC

Inventor： RHEE SEUNG JOON ,  BAKER EDGAR CHAPMAN ,  EDWARDS DAVID NICHOLAS ,  LEE KIU HEE ,  MOORHOUSE JOHN HENRY ,  SCAROLA LEONARD SEBASTIAN ,  KAROL FREDERICK JOHN

IPC: C08F2/34 ,  C08F2/44 ,  C08F32/00 ,  C08F36/00 ,  C08F136/06 ,  C08F210/16 ,  C08F210/18 ,  C08F232/08 ,  C08F293/00 ,  C08F297/08 ,  C08F36/06

Abstract: A process for producing sticky polymers at polymerization reaction temperatures in excess of the softening temperature of the sticky polymers in a fluidized bed reactor catalyzed by a transition metal catalyst, which comprises conducting the polymerization reaction above the softening temperatures of the sticky polymers in the presence of about 0.3 to about 80 weight percent, based on the weight of the final product of an inert particulate material having a mean particle size of from about 0.01 to about 10 microns whereby polymer agglomeration of the sticky polymers is maintained at a size suitable for continuously producing the sticky polymers.

公开(公告)号：AU4832399A

公开(公告)日：2000-01-17

申请号：AU4832399

申请日：1999-06-25

Applicant: UNION CARBIDE CHEM PLASTIC

Inventor： NEUBAUER ANTHONY CHARLES ,  SCAROLA LEONARD SEBASTIAN ,  ROZENBLAT BENJAMIN ROMAN

IPC: B29B7/90 ,  B29B9/12 ,  C08K3/00 ,  C08L101/00

Abstract: There is provided a method which reduces fines while maintaining the bulk handling advantages of granular or particulate elastomers such as those produced in gas phase processes and which affords continuous bulk handling of synthetic rubbers or elastomers such as those produced in solution and/or suspension processes. The method comprises (1) feeding an crumb form elastomer or a granular elastomer which contains fines along with optionally one or more filler materials to a mixer/extruder where it is masticated and melted into a compound; (2) pumping the compound through an orifice of the mixer/extruder, and (3) cutting and forming the compound into shaped pellets ranging in size from about 0.5 to 30 mm.

公开(公告)号：CA2255173A1

公开(公告)日：1999-06-05

申请号：CA2255173

申请日：1998-12-03

Applicant: UNION CARBIDE CHEM PLASTIC

Inventor： SCAROLA LEONARD SEBASTIAN ,  KHANIN DAVID

IPC: C08J3/00 ,  B29B7/84 ,  B29C48/76 ,  B29K101/12 ,  C08F6/00 ,  C08F6/10 ,  C08G63/88 ,  C08J11/02

Abstract: A process for the devolatilization of a thermoplastic polymer containing gaseous impurities in an apparatus having a melting zone, a mixing zone, and a reduced pressure zone, comprising: (a) (i) adding a granular blowing agent directly or via a masterbatch to the polymer prior to the introduction of the polymer into the melting zone, said blowing agent being added in an amount of about 1 to about 4 percent by weight based on the weight of the polymer or (ii) adding a gaseous blowing agent to the mixing zone; (b) melting the polymer in the melting zone; (c) mixing the molten polymer and blowing agent in the mixing zone under sufficient pressure to maintain the blowing agent in the mixture; (d) at a temperature sufficient for decomposition or expansion, (i) decomposing the granular blowing agent in the mixing zone and/or in the reduced pressure zone or (ii) expanding the gaseous blowing agent in the reduced pressure zone wherein the blowing agent in its decomposed or expanded state develops froth cells in the molten polymer; (e) in the reduced pressure zone, reducing the pressure at the surface of the molten polymer in a sufficient amount to remove essentially all of the gaseous impurities; (f) optionally, repeating steps (c), (d), and (e) at least once; and (g) recovering the polymer in an essentially unfoamed state.

公开(公告)号：AT169319T

公开(公告)日：1998-08-15

申请号：AT93108218

申请日：1993-05-19

Applicant: UNION CARBIDE CHEM PLASTIC

Inventor： BOYSEN ROBERT LORENZ ,  MURE CLIFF ROBERT ,  SCAROLA LEONARD SEBASTIAN ,  RHEE AARON SEUNG-JOON

IPC: C08F2/44 ,  C08F2/34 ,  C08F210/18 ,  C08J3/12

Abstract: A resin particle having an inner core comprising a sticky polymer and an outer shell of an inert particulate material.

公开(公告)号：AU687604B2

公开(公告)日：1998-02-26

申请号：AU3211495

申请日：1995-08-02

Applicant: UNION CARBIDE CHEM PLASTIC

Inventor： BERNIER ROBERT JOSEPH NOEL ,  BOYSEN ROBERT LORENZ ,  BROWN ROBERT CECIL ,  GOODE MARK GREGORY ,  MOORHOUSE JOHN HENRY ,  OLSEN ROBERT DARRELL ,  SCAROLA LEONARD SEBASTIAN ,  SPRIGG THOMAS EDWARD ,  WANG DUAN-FAN ,  WILLIAMS GARY HARRY

IPC: B60C1/00 ,  A61K31/35 ,  A61K31/352 ,  A61K31/40 ,  A61K31/4025 ,  A61K31/415 ,  A61K31/425 ,  A61K31/44 ,  A61K31/443 ,  A61K31/4433 ,  A61K31/50 ,  A61K31/505 ,  A61K31/53 ,  A61P9/00 ,  B01J8/24 ,  B01J23/10 ,  C07D311/58 ,  C07D311/78 ,  C07D311/92 ,  C07D311/94 ,  C07D405/12 ,  C07D405/14 ,  C07D409/14 ,  C07D417/12 ,  C07D491/052 ,  C07D493/04 ,  C08F2/00 ,  C08F2/34 ,  C08F2/44 ,  C08F4/54 ,  C08F4/622 ,  C08F4/64 ,  C08F4/70 ,  C08F10/00 ,  C08F10/14 ,  C08F36/04 ,  C08F36/06 ,  C08F210/00 ,  C08F210/16 ,  C08F210/18 ,  C08K3/04 ,  C08K3/34

Abstract: Polymers are produced in a stirred bed or gas fluidised bed polymerisation zone of growing polymer particles by (1) introducing a stream of monomer(s), and opt. inert gas(s) or liq(s)., into the polymerisation zone; (2) continuously or intermittently introducing a catalyst; (3) continuously or intermittently withdrawing polymer; and (4) continuously withdrawing unreacted gases, compressing and cooling the gases while maintaining the temp. in the polymerisation zone below the dew pt. of at least one monomer; with the proviso that if there is only one monomer present in the feed stream, an inert gas is also present.

公开(公告)号：ZA9609737B

公开(公告)日：1997-06-18

申请号：ZA9609737

申请日：1996-11-20

Applicant: UNION CARBIDE CHEM PLASTIC

Inventor： BERNIER ROBERT JOSEPH NOEL ,  ITALIAANDER ERIC THOMAS ,  PAEGLIS ARNIS UVI ,  ROZENBLAT BENJAMIN ROMAN ,  SCAROLA LEONARD SEBASTIAN ,  ARDHENOU SEN

IPC: B29C20060101 ,  C08J20060101 ,  C08K20060101 ,  C08J ,  B29C ,  C08K