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:
Dec. 10, 2024
Filed:
Mar. 31, 2021
W. L. Gore & Associates, Inc., Newark, DE (US);
Ravi Gupta, Newark, DE (US);
Guy A Sbriglia, Newark, DE (US);
W. L. Gore & Associates, Inc., Newark, DE (US);
Abstract
Poly(tetramethyl-p-silphenylenesiloxane) (PTMPS) membranes and porous articles made therefrom that have a matrix tensile strength in at least one direction from about 1 MPa to about 50 MPa, a matrix modulus greater than about 100 MPa in at least one direction, a porosity greater than about 30%, and a microstructure of nodes interconnected by fibrils are provided. The PTMPS polymer forming the PTMPS membranes and porous articles has a crystallinity of at least about 70%, a polydispersity from 1 to 5, and a weight average molecular weight from about 350 kDa to about 5 MDa. The PTMPS membranes may be asymmetric, meaning that the observed pore structure on one side of the PTMPS membrane is different than the pore structure on the opposing side of the PTMPS membrane. Methods of forming porous PTMPS articles are provided. Dense PTMPS articles and methods of making the same are also provided.