IP Library › Patent Application 11807315
Patent Application
App. No. 11/807,315

Method for conveying polymer

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Quick Facts
Patent No.
US None
App. No.
11/807,315
Filed
May 25, 2007
Art Unit
1774
USPC
366/76.9
Abstract

A method for transferring molten polymer through a chute having sharp internal corners, the chute bridging spaced apart processing units, wherein at least the internal corners of the chute are rounded and smoothed to at least a mirror shine.

Claims (8)

1 . In a method for conveying molten polymer from a first processing unit to a second processing unit wherein said molten polymer passes through an enclosed chute conduit having an inner surface and a polygonal transverse cross-section, said cross-section having a plurality of concave sharp angled corners, the improvement comprising providing said chute with concavely rounded corners, and smoothing at least said inner surface of said corners to meet at least an ASTM R-12 standard, 125 micron mirror smoothness.

2 . The method of claim 1 wherein said polymer is polyethylene.

3 . The method of claim 2 wherein said polyethylene is high density polyethylene.

4 . The method of claim 1 wherein said first processing unit is a high shear mixer, and said second processing unit is an extruder.

5 . The method of claim 1 wherein said transverse cross-section is quadrilateral in configuration.

6 . The method of claim 1 wherein said rounded corners have a radius of curvature of from about 2 to about 3.5 inches.

7 . The method of claim 1 wherein chute is upright with said first processing unit disposed on top of said chute, and said second processing unit disposed below said chute.

8 . The method of claim 1 wherein said smoothing is provided by at least one of polishing said inner surface and electroplating said inner surface.

Assignments (18)
RELEASE OF SECURITY INTEREST Recorded Jan 22, 2014
From: WELLS FARGO BANK, NATIONAL ASSOCIATION
To: EQUISTAR CHEMICALS, LP
Reel/Frame 032112/0786 →
APPOINTMENT OF SUCCESSOR ADMINISTRATIVE AGENT Recorded Jan 22, 2014
From: UBS AG, STAMFORD BRANCH
To: BANK OF AMERICA, N.A.
Reel/Frame 032112/0863 →
RELEASE OF SECURITY INTEREST Recorded Jan 22, 2014
From: CITIBANK, N.A.
To: EQUISTAR CHEMICALS, LP
Reel/Frame 032113/0644 →
RELEASE OF SECURITY INTEREST Recorded Jan 22, 2014
From: DEUTSCHE BANK TRUST COMPANY AMERICAS
To: EQUISTAR CHEMICALS, LP
Reel/Frame 032113/0684 →
RELEASE OF SECURITY INTEREST Recorded Jan 22, 2014
From: BANK OF AMERICA, N.A.
To: EQUISTAR CHEMICALS, LP
Reel/Frame 032113/0730 →
SECURITY AGREEMENT Recorded May 19, 2010
From: EQUISTAR CHEMICALS, LP
To: WELLS FARGO BANK, NATIONAL ASSOCIATION, AS COLLATERAL AGENT
Reel/Frame 024402/0655 →
SECURITY AGREEMENT Recorded May 18, 2010
From: EQUISTAR CHEMICALS, LP
To: CITIBANK, N.A., AS ADMINISTRATIVE AGENT
Reel/Frame 024397/0861 →
SECURITY AGREEMENT Recorded May 7, 2010
From: EQUISTAR CHEMICALS. LP
To: UBS AG, STAMFORD BRANCH, AS COLLATERAL AGENT
Reel/Frame 024351/0001 →
SECURITY AGREEMENT Recorded May 6, 2010
From: EQUISTAR CHEMICALS, LP
To: DEUTSCHE BANK TRUST COMPANY AMERICAS, AS COLLATERAL AGENT
Reel/Frame 024342/0443 →
RELEASE OF SECURITY INTEREST Recorded May 5, 2010
From: CITIBANK, N.A., AS COLLATERAL AGENT
To: LYONDELL CHEMICAL TECHNOLOGY, L.P.; EQUISTAR CHEMICALS, LP
Reel/Frame 024337/0705 →
RELEASE OF SECURITY INTEREST Recorded May 5, 2010
From: UBS AG, STAMFORD BRANCH, AS COLLATERAL AGENT
To: EQUISTAR CHEMICALS, LP
Reel/Frame 024337/0186 →
RELEASE OF SECURITY INTEREST Recorded May 5, 2010
From: CITIBANK, N.A., AS COLLATERAL AGENT
To: LYONDELL CHEMICAL TECHNOLOGY, L.P.; EQUISTAR CHEMICALS, LP
Reel/Frame 024337/0856 →
RELEASE OF SECURITY INTEREST Recorded May 4, 2010
From: CITIBANK, N.A., AS COLLATERAL AGENT
To: EQUISTAR CHEMICALS, LP
Reel/Frame 024329/0535 →
SECURITY AGREEMENT Recorded Oct 30, 2009
From: EQUISTAR CHEMICALS, LP
To: UBS AG, STAMFORD BRANCH, AS COLLATERAL AGENT
Reel/Frame 023449/0687 →
SECURITY AGREEMENT Recorded Apr 9, 2009
From: EQUISTAR CHEMICALS, LP
To: CITIBANK, N.A., AS ADMINISTRATIVE AGENT AND COLLATERAL AGENT
Reel/Frame 022678/0860 →
SECURITY AGREEMENT Recorded Aug 4, 2008
From: BASELL POLYOLEFINE GMBH; ARCO CHEMICAL TECHNOLOGY L.P.; ARCO CHEMICAL TECHNOLOGY, INC.; ATLANTIC RICHFIELD COMPANY; BASELL NORTH AMERICA, INC.; BASELL POLYOLEFIN GMBH; LYONDELL CHEMICAL COMPANY; EQUISTAR CHEMICALS, L.P.
To: CITIBANK, N.A., AS COLLATERAL AGENT
Reel/Frame 021354/0708 →
GRANT OF SECURITY INTEREST IN UNITED STATES PATENTS AND PATENT APPLICATIONS Recorded Mar 26, 2008
From: BASELL POLYOLEFINE GMBH; ARCO CHEMICAL TECHNOLOGY L.P.; ARCO CHEMICAL TECHNOLOGY, INC.; ATLANTIC RICHFIELD COMPANY; BASELL NORTH AMERICA, INC.; EQUISTAR CHEMICALS. LP.; LYONDELL CHEMICAL COMPANY; LYONDELL CHEMICAL TECHNOLOGY, L.P.; LYONDELL PETROCHEMICAL COMPANY; NATIONAL DISTILLERS AND CHEMICAL CORPORATION; OCCIDENTAL CHEMICAL CORPORATION; OLIN CORPORATION; QUANTUM CHEMICAL CORPORATION; BASELL POLYOLEFIN GMBH
To: CITIBANK, N.A., AS COLLATERAL AGENT
Reel/Frame 020704/0562 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded May 25, 2007
From: KETCHUM, JAMES R.
To: EQUISTAR CHEMICALS, LP
Reel/Frame 019400/0699 →