Non-destructive method for determining the extent of cure of a p

Details Non-destructive method for determining the extent of cure of a p Non-destructive method for determining the extent of cure of a p

1995-02-15

1997-01-28

Fields, Carolyn E.

Radiant energy

Luminophor irradiation

Methods

2504581, G01N 2164, G01N 3344

Patent

active

055980058

ABSTRACT:
The change in the peak fluorescence wavelength of a small amount of a fluorescent compound, i.e., a fluorophore, which has been dissolved in a polymerizing material or a thermoplastic polymer is used to determine the extent of cure or solidification, respectively. The measured wavelength-shift can either be compared with a previously determined correlation to obtain an absolute value for the extent of cure, or can be utilized to compare or maintain an acceptable extent of cure throughout a manufacturing or a clinical process. Similarly, in the processing of a thermoplastic polymer by injection molding, the measured wavelength shift can either be compared with a previously determined correlation to obtain an absolute value for the temperature of the polymer, or can be utilized to adjust the injection molding cycle so that the mold is opened at the optimum times. The fluorophores used in the method are preferably selected from a class of fluorophores comprising alpha, omega substituted linear alkenes having an electron accepting group attached at the alpha position and an electron donating group attached at the omega position.

REFERENCES:
patent: 4651011 (1987-03-01), Ors et al.
patent: 4717545 (1988-01-01), Morris
patent: 4945245 (1990-07-01), Levin
patent: 5047444 (1991-09-01), DeVoe et al.
patent: 5100802 (1992-03-01), Mickols
patent: 5158720 (1992-10-01), Levy
patent: 5165972 (1992-11-01), Porter
patent: 5377294 (1994-12-01), Onishi et al.

Affiliated with

Also associated with

Rating

Non-destructive method for determining the extent of cure of a p does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Non-destructive method for determining the extent of cure of a p, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Non-destructive method for determining the extent of cure of a p will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-942830