The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Oct. 13, 2020
Filed:
Dec. 19, 2017
Exxonmobil Chemical Patents Inc., Baytown, TX (US);
Ranjan Tripathy, Sugar Land, TX (US);
ExxonMobil Chemical Patents Inc., Baytown, TX (US);
Abstract
Disclosed herein are copolymers comprising at least one block comprising C8-C12 olefin-derived units, at least one block comprising C4-C6 olefin-derived units, and at least one block comprising C5/C10 olefin-derived units, wherein each block has a number average molecular weight of at least 300 g/mole and two glass transition temperatures (Tg). The olefin block copolymers are formed by combining a first olefin with a catalyst at least a first stage to form a first olefin block, and combining a second olefin with the same or different catalyst in at least a separate stage to form a second block. The copolymers are useful as tackifiers in adhesive compositions and in films.