Andrew L Duncan

US Patent:

20130338260, Dec 19, 2013

Filed:

Jun 12, 2013

Appl. No.:

13/915788

Inventors:

CURTIS R. CENTER - NEWARK DE, US
YUEFEI TAO - HOCKESSIN DE, US
JENNIFER L. THOMPSON - NEWARK DE, US
LECH WILCZEK - WILMINGTON DE, US
CHEN QIAN ZHAO - NEWARK DE, US
ANDREW JAY DUNCAN - WILMINGTON DE, US

Assignee:

E I DU PONT DE NEMOURS AND COMPANY - Wilmington DE

International Classification:

C08L 77/06
C08J 3/22

US Classification:

523351, 523400

Abstract:

Disclosed is a thermoplastic melt-mixed composition including: a) a semicrystalline polyamide resin; b) a polyepoxy compound including at least two or more epoxy groups; the polyepoxy compound having a number average molecular weight of less than 8000; one or more carboxylic acid compounds selected from the group consisting of polyacids, acid alcohols and combinations of these, the carboxylic acid compounds have a number average molecular weight of less than 2000; and optionally, d) reinforcing agent; e) polymeric toughener; and f) further additives.

US Patent:

20130338261, Dec 19, 2013

Filed:

Jun 12, 2013

Appl. No.:

13/915890

Inventors:

Yuefei Tao - Hockessin DE, US
Jennifer L. Thompson - Newark DE, US
Lech Wilczek - Wilmington DE, US
Chen Qian Zhao - Newark DE, US
Andrew Jay Duncan - Wilmington DE, US

International Classification:

C08K 5/17
C08L 77/06

US Classification:

523351, 524238, 523455

Abstract:

Disclosed is a thermoplastic melt-mixed composition including: a) a polyamide resin; b) 0.50 to about 5.0 weight percent of one or more amino acid selected from the group consisting of primary amino acids and secondary amino adds; said amino add having no hydroxyl groups and no more than one carboxylic add; optionally, c) one or more polyepoxy compound including at least two or more epoxy groups; d) reinforcing agent; e) polymeric toughener; and f) further additives; wherein the weight percents of components a), b), c) d) e) and f) are based on the total weight of the thermoplastic melt-mixed composition. Also disclosed are processes for making the compositions.

US Patent:

20190085163, Mar 21, 2019

Filed:

Apr 25, 2017

Appl. No.:

16/095538

Inventors:

- Wilmington DE, US
Andrew Jay Duncan - Wilmington DE, US

International Classification:

C08L 67/02
B65B 3/02
B65B 3/00
B29C 49/00

Abstract:

The disclosure relates to processes for producing lightweight polyethylene terephthalate articles such as bottles that retain good barrier properties against the permeation of oxygen, carbon dioxide and/or water vapor. The use of relatively small amounts of polytrimethylene furandicarboxylate during the formation of the PET bottles can produce a bottle having the required barrier properties and result in the use of less material.

US Patent:

20140318793, Oct 30, 2014

Filed:

Apr 21, 2014

Appl. No.:

14/257782

Inventors:

Andrew Duncan - Houston TX, US
Alfredo Mendez Zurita - Houston TX, US
Kern L. Smith - Houston TX, US

Assignee:

CLEARWATER INTERNATIONAL, LLC - Houston TX

International Classification:

E21B 43/25

US Classification:

1663051, 166179

Abstract:

Systems and methods for treating formation intervals including forming a low permeability layer on a surface of the interval and pumping a sand control treating solution through the layer, which diverts the flow into the formation permitting improved treatment uniformity and improved overall internal treatment.