<SEC-DOCUMENT>0001193125-17-114930-index.html : 20170407
<SEC-HEADER>0001193125-17-114930.hdr.sgml : 20170407
<ACCEPTANCE-DATETIME>20170407080756
ACCESSION NUMBER:		0001193125-17-114930
CONFORMED SUBMISSION TYPE:	DEFA14A
PUBLIC DOCUMENT COUNT:		5
FILED AS OF DATE:		20170407
DATE AS OF CHANGE:		20170407
EFFECTIVENESS DATE:		20170407

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:		DEFA14A
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-32260
		FILM NUMBER:		17747689

	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>DEFA14A
<SEQUENCE>1
<FILENAME>d314589ddefa14a.htm
<DESCRIPTION>DEFA14A
<TEXT>
Document 1 - file: d314589ddefa14a.htm

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>2
<FILENAME>g314589b1.jpg
<DESCRIPTION>GRAPHIC
<TEXT>
Document 2 - file: g314589b1.jpg

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>3
<FILENAME>g314589b2.jpg
<DESCRIPTION>GRAPHIC
<TEXT>
Document 3 - file: g314589b2.jpg

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>4
<FILENAME>g314589b3.jpg
<DESCRIPTION>GRAPHIC
<TEXT>
Document 4 - file: g314589b3.jpg

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>5
<FILENAME>g314589b4.jpg
<DESCRIPTION>GRAPHIC
<TEXT>
Document 5 - file: g314589b4.jpg

</DOCUMENT>
</SEC-DOCUMENT>