Abstract: Encapsulated electroluminescent phosphor particles and method for making same. The phosphor particles are encapsulated in a very thin oxide layer to protect them from aging due to moisture intrusion. The particles are encapsulated via a vapor phase hydrolysis reaction of oxide precursor materials at a temperature of between about 25.degree. C. and about 170.degree. C., preferably between about 100.degree. C. and about 150.degree. C. The resultant encapsulated particles exhibit a surprising combination of high initial luminescent brightness and high resistance to humidity-accelerated brightness decay.
Type:
Grant
Filed:
May 15, 1995
Date of Patent:
January 14, 1997
Assignee:
Minnesota Mining and Manufacturing Company
Abstract: The present invention relates to a permanently removable, low melt viscosity acrylic pressure-sensitive adhesive comprising a lower alkylacrylate, a higher alkylacrylate and a crosslinker.
Type:
Grant
Filed:
November 4, 1994
Date of Patent:
September 3, 1996
Assignee:
Minnesota Mining and Manufacturing Company
Abstract: An improved thermoplastic resin composition is described, containing polyphenylene ether resin, polyamide resin, and certain organophosphorus compounds. Particular examples of the organophosphorus compounds are dimethyloxazolinylmethylbisvinylphenyl phosphate and bis(dimethyloxazolinylmethyl)vinylphenyl phosphate. The compositions are characterized by excellent mechanical properties and oil resistance.