POLYGLYCOLIC ACID RESIN COMPOSITION, MOLDED PRODUCT FOR WELL DRILLING, AND DOWNHOLE TOOL MEMBER

USPTO Patent Application US 2018/0094132 A1
Application Date: Apr. 5th, 2018

ABSTRACT

In light of increasingly severe and diverse excavation conditions for hydrocarbon resource recovery, such as the drilling of very deep wells, provided is a highly impact-resistant polyglycolic acid resin composition...
Assignee(s):
Application Number:
15/831,958
International Classification:
C08L 67/04 (20060101); C08L 33/10 (20060101); B22C 1/22 (20060101); C08G 63/06 (20060101); E21B 4/16 (20060101)
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CLAIMS

What is claimed is:

1. A molded product for well drilling formed from a polyglycolic acid resin composition, the polyglycolic acid resin composition comprising: a polyglycolic acid; andan acrylic rubber core-shell polymer having an acrylic rubber as a core layer, and a vinyl (co)polymer as a shell layer,wherein a melt viscosity of the polyglycolic acid is...

DESCRIPTION

CROSS REFERENCE TO RELATED APPLICATIONS

This application is a Divisional of copending application Ser. No. 15/520,492, filed on Apr. 20, 2017, which was filed as PCT International Application No. PCT/JP2015/081848 on Nov. 12, 2015, which claims priority under 35 U.S.C. § 119(a) to Patent Application No. 2014-230420, filed in Japan on Nov. 13, 2014, all...
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