Apparatus and system for expanding expandable polymeric microspheres

Patent metadata

Field	Value
Publication number	US-9586348-B2
Application number	US-201615093848-A
Country	US
Kind code	B2
Filing date	Apr 8, 2016
Priority date	Apr 19, 2012
Publication date	Mar 7, 2017
Grant date	Mar 7, 2017

Abstract

An apparatus including: (a) a steam generator having a power output of less than or equal to about 6 boiler horsepower; (b) a steam conduit in fluid communication with the steam generator; (c) a fluid material conduit in fluid communication with a source of a fluid material, wherein the fluid material includes unexpanded, expandable polymeric microspheres; (d) a treatment zone in fluid communication with the steam generator via the steam conduit, and with the fluid material conduit, such that the fluid material is contacted by steam within the treatment zone; and (e) a back pressure generator in fluid communication with the treatment zone, capable of increasing pressure in the treatment zone, which results in expansion of the expandable polymeric microspheres when the fluid material exits the treatment zone.

First claim

What is claimed is:

1. An apparatus comprising:
a. a steam generator;
b. a steam conduit in fluid communication with the steam generator;
c. a fluid material conduit in fluid communication with a source of a fluid material, wherein the fluid material comprises unexpanded, expandable polymeric microspheres;
d. a treatment zone in fluid communication with the steam generator via the steam conduit, and with the fluid material conduit, such that the fluid material is contacted by steam within the treatment zone; and
e. a back pressure generator in fluid communication with the treatment zone, capable of increasing pressure in the treatment zone, which results in expansion of the expandable polymeric microspheres when the fluid material exits the treatment zone, wherein the back pressure generator comprises at least one of:
(ii) a conduit which has an interior size which is smaller than the interior size of either or both of the fluid material conduit or the steam conduit, such that the temperature and/or pressure inside the treatment zone are maintained or increased; or
(iii) a conduit which has an irregular interior wall pattern, such that the temperature and/or pressure inside the treatment zone are maintained or increased;

wherein the apparatus has a footprint which allows the apparatus to be placed inside an existing manufacturing facility without substantially adversely affecting production of products of manufacture produced at the existing manufacturing facility, and without requiring adding space to the existing manufacturing facility.

2. The apparatus of claim 1 , wherein the apparatus consumes less than or equal to about 70 kw during steady-state operation.

3. The apparatus of claim 1 , wherein the apparatus consumes less than or equal to about 45 kw during steady-state operation.

4. The apparatus of claim 1 , wherein the footprint of the apparatus is less than or equal to about 60 ft 2 .

5. The apparatus of claim 1 , further comprising a manual and/or automatic site gauge engaged with the fluid material conduit.

6. The apparatus of claim 1 , wherein the inside diameter of the fluid material conduit is from about 0.2 to about 1.5 inches.

7. The apparatus of claim 1 , wherein the treatment zone comprises a treatment conduit.

8. The apparatus of claim 7 , wherein the steam conduit and the fluid material conduit are joined via a conduit junction proximate to an inlet end of the treatment conduit.

9. The apparatus of claim 7 , wherein the steam conduit and the fluid material conduit are joined via a conduit junction engaged with an inlet end of the treatment conduit.

10. The apparatus of claim 7 , wherein the back pressure generator is engaged with an outlet end of the treatment conduit.

11. The apparatus of claim 1 , wherein the temperature inside the treatment zone is from about 80° C. to about 160° C.

12. The apparatus of claim 1 , wherein the temperature inside the treatment zone is from about 105° C. to about 145° C.

13. The apparatus of claim 1 , wherein the pressure inside the treatment zone is from about 46.1 kPa to about 618.1 kPa.

14. The apparatus of claim 1 , wherein the pressure inside the treatment zone is from about 120 kPa to about 420 kPa.

15. The apparatus of claim 1 , further comprising:
f. a control device to manually and/or automatically control the function of the apparatus; and
g. a manual and/or automatic site gauge engaged with the fluid material conduit;
wherein:
i. the treatment zone comprises a treatment conduit;
ii. the steam conduit and the fluid material conduit converge via a conduit junction engaged with an inlet end of the treatment conduit; and
iii. the back pressure generator is engaged with an outlet end of the treatment conduit.

16. A system for providing expanded polymeric microspheres comprising the apparatus of claim 1 and at least one batch tank to receive the expanded expandable polymeric microspheres, optionally wherein the at least one batch tank comprises at least one mixing device.

17. The system of claim 16 , comprising a plurality of batch tanks to receive the expanded polymeric microspheres.

18. The apparatus of claim 1 , wherein the back pressure generator comprises a rifled conduit.

Assignees

• Construction Research & Technology Gmbh
• Akzo Nobel Chemicals Int Bv
• Akzonobel Chemicals Int B V

Inventors

• Ong Frank Shaode
• Muessig Stefan
• Gambatesa Darren
• Smith James C
• Paponetti Rick
• Bury Mark A
• Svensson Fredrik
• Nordin Jan
• Simmons Jermaine

Classifications

• B29C44/3403

  Foaming under special conditions, e.g. in sub-atmospheric pressure, in or on a liquid · CPC title

• B29K2101/12

  Thermoplastic materials · CPC title

• C04B16/08

  porous, e.g. expanded polystyrene beads {or microballoons} · CPC title

• C08J9/16

  Making expandable particles · CPC title

• B29C44/3461 Primary

  Making or treating expandable particles · CPC title