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:
Jun. 23, 2026
Filed:
Dec. 21, 2020
Syensqo Specialty Polymers Italy S.p.a., Bollate, IT;
Vito Tortelli, Milan, IT;
Cristiano Monzani, Trezzo sull'Adda, IT;
Emanuela Antenucci, Saronno, IT;
Eliana Ieva, Alessandria, IT;
SYENSQO SPECIALTY POLYMERS ITALY S.p.A., Bollate, IT;
Abstract
The invention relates to a method for manufacturing low-molecular-weight polytetrafluoroethylene, comprising: a) a first step of mixing high-molecular-weight polytetrafluoroethylene with at least one additive selected from the group consisting of ethers having formula R—O—R, wherein Rand Rare independently selected among C-Cstraight or branched aliphatic group, C-Calicyclic or heterocyclic groups, C-Caromatic or heteroaromatic groups; (per)fluorinated vinyl ethers; (per)fluorinated olefins; and optionally substituted aromatic hydrocarbons, and b) a second step of irradiating the so obtained mixture with ionizing radiation, said second step b) being carried out substantially in the absence of oxygen.