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. 14, 1977
Filed:
Jun. 11, 1975
Masakazu Tanaka, Otsu, JA;
Kazuo Watanabe, Otsu, JA;
Toyo Boseki Kabushiki Kaisha, , JA;
Abstract
Disclosed are polyethers of the general formula: ##STR1## WHEREIN, R.sub.1 and R.sub.2 are each a hydrogen atom or an alkyl group having 1 to 6 carbon atoms and, R.sub.1 and R.sub.2, when these are bonded to each other, may be polymethylene groups that form a heteroring with the nitrogen atom, R.sub.3 is a hydrogen atom or an alkyl group of 1 to 4 carbon atoms, m is an integer from 1 to 20, n is 0 or 1, p is an integer from 5 to 1000 and Ar is at least one member selected from the group consisting of divalent aromatic residues of the following formulas: ##STR2## IN FORMULA (1), Y is an alkylene group of 1 to 4 carbon atoms, an alkylidene group of 3 to 15 carbon atoms, --O--, --SO.sub.2 --, --S-- or >C=O.