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:
Jan. 21, 1986
Filed:
Jul. 11, 1984
Takeshi Horikawa, Himeji, JP;
Kenichi Sasaki, Himeji, JP;
Daicel Chemical Industries, Ltd., Sakai, JP;
Abstract
A process for preparing polyamide elastomers is provided which process comprises reacting a polyamide-forming component having carboxyl groups at both ends thereof with polyoxyalkylene glycol(s) at least 10 wt. % of which comprises a polyoxy-2-methyl-1,3-propylenediol having a number-average molecular weight of about 400 to 10,000. The polyamide-forming component forms a polyamide block having a recurring unit of the formula: ##STR1## in which n represents a positive integer of 5 to 11, and/or ##STR2## in which l represents a positive integer of 6 to 20 and m represents a positive integer of 4 to 20. The obtained polyamide elastomers have excellent low-temperature properties and elastic recovery.