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:
Aug. 09, 1983
Filed:
Jun. 02, 1981
Craig R Hof, Hopatcong, NJ (US);
Roy A Ulin, Wyckoff, NJ (US);
Dennis Nickoloff, Lake Hiawatha, NJ (US);
PyMaH Corporation, Somerville, NJ (US);
Abstract
A new and useful composition of matter, solid at room temperature, is disclosed, comprising: (1) an effective amount of a suitable nucleating agent substantially uniformly dispersed in (2) a suitable pressure-sensitive adhesive for encapsulating a temperature-sensitive solid mixture having a given nucleation efficiency and which melts at a predetermined temperature, whereby the suitable nucleating agent is (a) inert to both the pressure-sensitive adhesive and the temperature-sensitive solid mixture, and (b) capable of raising the nucleation efficiency of said solid mixture. The novel composition of matter overcomes the extreme super-cooling achieved by temperature-indicating compositions of matter in U.S. Pat. No. 4,232,552 (which change color with a change in phase) without the use of classical nucleating agents being employed in such temperature-indicating compositions of matter. The novel adhesive composition of matter has been found to be especially suitable in conjunction with a preferred '552 temperature-indicating composition of matter comprising pinacyanol iodide dissolved in a solvent comprising ortho-chloronitrobenzene and ortho-bromonitrobenzene. An especially suitable novel adhesive of the instant invention comprises 0.5 to about 5.0 phr talc in polyisobutylene.