<SEC-DOCUMENT>0001193125-17-188309-index.html : 20170531 <SEC-HEADER>0001193125-17-188309.hdr.sgml : 20170531 <ACCEPTANCE-DATETIME>20170531073403 ACCESSION NUMBER: 0001193125-17-188309 CONFORMED SUBMISSION TYPE: SD PUBLIC DOCUMENT COUNT: 1 <RULE> <RULE-NAME>13p-1 <ITEM> <ITEM-NUMBER>1.01 <ITEM-PERIOD>20161231 </ITEM> </RULE> FILED AS OF DATE: 20170531 DATE AS OF CHANGE: 20170531 FILER: COMPANY DATA: COMPANY CONFORMED NAME: WESTLAKE CHEMICAL CORP CENTRAL INDEX KEY: 0001262823 STANDARD INDUSTRIAL CLASSIFICATION: INDUSTRIAL ORGANIC CHEMICALS [2860] IRS NUMBER: 760346924 STATE OF INCORPORATION: DE FISCAL YEAR END: 1231 FILING VALUES: FORM TYPE: SD SEC ACT: 1934 Act SEC FILE NUMBER: 001-32260 FILM NUMBER: 17879495 BUSINESS ADDRESS: STREET 1: 2801 POST OAK BLVD STREET 2: SUITE 600 CITY: HOUSTON STATE: TX ZIP: 77056 BUSINESS PHONE: 713-960-9111 MAIL ADDRESS: STREET 1: 2801 POST OAK BLVD STREET 2: SUITE 600 CITY: HOUSTON STATE: TX ZIP: 77056 </SEC-HEADER> <DOCUMENT> <TYPE>SD <SEQUENCE>1 <FILENAME>d514353dsd.htm <DESCRIPTION>SD <TEXT> Document 1 - file: d514353dsd.htm
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