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:
Jul. 03, 2001
Filed:
Jul. 13, 1999
Eberhard Kinkelin, Chur, CH;
Jürgen Spindler, Dormat/Ems, CH;
Gerhard Pössenecker, Trin, CH;
EMS Chemie AG, Domat/Ems, CH;
Abstract
Novel, quick-crystallizing hot-melt adhesive masses having a melting point between 60° and 100° C. comprise a statistically-proportioned copolyester or copolyetherester based on terephthalic acid, adipic acid and a mixture of aliphatic diols; the molar proportion of terephthalic acid is between 55 and 85 mole %, relative to the total acid quantity; and the molar proportion of adipic acid is between 15 and 40 mole %. A combination of butane diol and hexane diol is used as the diol component; the molar component of butane diol is between 40 and 55 mole %; and the molar proportion of hexane diol is between 40 and 60 mole %. Up to 15 mole % of a dimer acid having a molar mass between 400 and 800 g/mole, or up to 10 mole % of a higher-molecular polyethylene glycol having a molecular mass of 600 to 4000 g/mole, can be used to increase the flexibility. The copolyester or copolyetherester hot-melt adhesive masses of the invention can be used in the hot-melt method, and in powder-form coating methods.