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:
Mar. 31, 1992
Filed:
Mar. 01, 1991
Polyplastics Co., Ltd., Osaka, JP;
Abstract
A copolyester resin is the polycondensation reaction product of (a) terephthalic acid or a dialkyl terephthalate, (b) at least one alkylene glycol having 2 to 8 carbon atoms, and (c) a dimer diol having as a main component a compound of the following formula (1): ##STR1## wherein R.sub.1 through R.sub.4 are each unsaturated linear organic groups such that the total number of carbon atoms of R.sub.1, R.sub.2, R.sub.3 and R.sub.4 is between 22 to 34. Preferably, R.sub.1 and R.sub.2, which may be the same or different, each represent an alkyl group, and R.sub.3 and R.sub.4, which may be the same or different, each represent an alkylene group. The resin of the present invention may be melt-blended with a filler material and formed into a film by suitable film-forming techniques. The film is especially advantageous due to its heat-sealing and mechanical properties.