Browse Prior Art Database

Optimizing the Balance Between Stiffness and Toughness in PP/EPR Blends by Incorporation of Alpha Nucleating Agents Disclosure Number: IPCOM000249407D
Publication Date: 2017-Feb-23
Document File: 7 page(s) / 397K

Publishing Venue

The Prior Art Database

Related People

Lanya Cheng: AUTHOR [+5]


ExxonMobil high melt flow polypropylene, PP9999ss (MFR 65, ASTM D1238 230°C, 2.16 kg) was mixed with commercial nucleating agents (NAs) and ethylene-propylene rubber to prepare nucleated PP/EPR blends. Incorporation of alpha nucleating agents (α-NAs) in PP/EPR blends results in simultaneous improvement of stiffness and toughness. It was found to be an effective method to optimize the balance of stiffness and toughness and help to expand the PP or ICP market in automotive application and other fields. Among these α-NAs, NA-11 [sodium 2, 2'-methylene-bis-4, 6-di-t-butylphenylene) phosphate] works outstandingly and successfully to achieve 20% increase on stiffness and 80% increase on toughness in PP9999ss/MDV91-9 blends.

This text was extracted from a PDF file.
This is the abbreviated version, containing approximately 25% of the total text.

©2017 Exxon Mobil Corporation. All Rights Reserved. To the extent the user is entitled to disclose and distribute this document, the user may forward, distribute, and/or photocopy this copyrighted document only if unaltered and complete, including all of its headers, footers, disclaimers, and other information. You may not copy this document to a Web site or other location. ExxonMobil does not guarantee the typical (or other) values. Analysis may have been performed on representative samples and not the actual product shipped. The information in this document relates only to the named product or materials when not in combination with any other product or materials. WE BASED THE INFORMATION ON DATA BELIEVED TO BE RELIABLE ON THE DATE COMPILED, BUT WE DO NOT REPRESENT, WARRANT, OR OTHERWISE GUARANTEE, EXPRESSLY OR IMPLIEDLY, THE MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE, SUITABILITY, ACCURACY, RELIABILITY, OR COMPLETENESS OF THIS INFORMATION OR THE PRODUCTS, MATERIALS, OR PROCESSES DESCRIBED HEREIN. The user is solely responsible for all determinations regarding any use of material or product and any process in its territories of interest. WE EXPRESSLY DISCLAIM LIABILITY FOR ANY LOSS, DAMAGE, OR INJURY DIRECTLY OR INDIRECTLY SUFFERED OR INCURRED AS A RESULT OF OR RELATED TO ANYONE USING OR RELYING ON ANY OF THE INFORMATION IN THIS DOCUMENT. There is no endorsement of any product or process, and we expressly disclaim any contrary implication. There is no warranty against patent infringement, indemnity, or any license or immunity granted and we expressly disclaim any contrary implication. The terms, “we”, “our”, "ExxonMobil Chemical", or "ExxonMobil" are used for convenience, and may include any one or more of ExxonMobil Chemical Company, Exxon Mobil Corporation, or any affiliates they directly or indirectly steward. ExxonMobil, ExxonMobil Chemical, the ExxonMobil Emblem, and the “Interlocking X” Device are trademarks of Exxon Mobil Corporation.  

Optimizing the Balance Between Stiffness and Toughness in PP/EPR Blends by 

Incorporation of Alpha Nucleating Agents 

Lanya Cheng, Ling Ge, Sudhin Datta, Yiping Ni, Peite Bao

ExxonMobil Chemical Company, 5200 Bayway Drive, Baytown, Texas 77520 

Abstract: ExxonMobil high melt flow polypropylene, PP9999ss (MFR 65, ASTM D1238 230°C, 2.16 kg)  was  mixed  with  commercial  nucleating  agents  (NAs)  and  ethylene‐propylene  rubber  to  prepare  nucleated PP/EPR blends. Incorporation of alpha nucleating agents (α‐NAs) in PP/EPR blends results in  simultaneous  improvement of  stiffness and  toughness.  It was  found  to be an effective method  to  optimize the balance of stiffness and toughness and help to expand the PP or ICP market in automotive  application  and  other  fields.  Among  these  α‐NAs,  NA‐11  [sodium  2,  2’‐methylene‐bis‐4,  6‐di‐t‐ butylphenylene) phosphate] works outstandingly and successfully to achieve 20% increase on stiffness  and 80% increase on toughness in PP9999ss/MDV91‐9...