Process for monitoring time-temperature histories of perishables utilizing inactive form of diacetylene
원문보기
IPC분류정보
국가/구분
United States(US) Patent
등록
국제특허분류(IPC7판)
C09K-003/00
출원번호
US-0060936
(1979-07-26)
발명자
/ 주소
Patel Gordhanbhai N. (Morris Plains NJ)
출원인 / 주소
Allied Chemical Corporation (Morris Township, Morris County NJ 02)
인용정보
피인용 횟수 :
15인용 특허 :
4
초록▼
An improved process and device are described, for monitoring time-temperature histories of perishable articles, utilizing an inactive form of a diacetylene compound, incapable of undergoing a color change upon thermal annealing, but capable of conversion to an active form upon contacting an activati
An improved process and device are described, for monitoring time-temperature histories of perishable articles, utilizing an inactive form of a diacetylene compound, incapable of undergoing a color change upon thermal annealing, but capable of conversion to an active form upon contacting an activating vapor. The active form is capable of undergoing a color change upon thermal annealing, as a result of solid state polymerization wherein the resulting color change is representative of the time-temperature history of thermal annealing. Specific active and inactive forms of diacetylenes useful in the improved process and device are also described.
대표청구항▼
A composition consisting essentially of at least one member of the group consisting of the inactive forms of 2,4-hexadiyn-1,6-diol bis(m-tolyurethane), 2,4-hexadiyn-1,6-diol bis(o-methoxyphenylurethane), 2,4-hexadiyn-1,6-diol bis(o-chlorophenylurethane), 2,4-hexadiyn-1,6-diol bis-(p-chlorophenyluret
A composition consisting essentially of at least one member of the group consisting of the inactive forms of 2,4-hexadiyn-1,6-diol bis(m-tolyurethane), 2,4-hexadiyn-1,6-diol bis(o-methoxyphenylurethane), 2,4-hexadiyn-1,6-diol bis(o-chlorophenylurethane), 2,4-hexadiyn-1,6-diol bis-(p-chlorophenylurethane) and co-crystallized compositions thereof, which forms are inactive in the sense that they are unreactive toward polymerization upon thermal annealing by heating below the respective melting points for several hours, and remain colorless after such heating, but which can be transformed into an active form, capable of undergoing solid state polymerization upon thermal annealing, by contacting with vapor consisting essentially of at least one member of the group consisting of p-dioxane, dimethylformamide, and pyridine.
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이 특허에 인용된 특허 (4)
Patel Gordhanbhai N. (Morris Plains NJ), Co-crystallized acetylenic compounds.
Preziosi Anthony F. (Ledgewood NJ) Patel Gordhanbhai N. (Morris Plains NJ) Denkewalter Robert G. (Westfield NJ) Baughman Ray H. (Morris Plains NJ), Indicator device using metal salts of polyacetylenic compounds.
Baughman Ray H. (Morris Plains NJ) Patel Gordhanbhai N. (Morris Plains NJ) Miller Granville G. (Morristown NJ), Integrated time-temperature or radiation-dosage history recording device.
Swartzel Kenneth R. (Raleigh NC) Ganesan Sudalaimuthu G. (Raleigh NC) Kuehn Richard T. (Cary NC) Hamaker Raymond W. (Raleigh NC) Sadeghi Farid (Malden MA), Thermal memory cell and thermal system evaluation.
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