Indicator for determining organic isocyanates on a carrier

Details Indicator for determining organic isocyanates on a carrier Indicator for determining organic isocyanates on a carrier

1985-03-04

1986-09-23

Richman, Barry S.

Chemistry: analytical and immunological testing

Nitrogen containing

436109, 436127, 436145, 422 56, 422 57, 422 86, 422 87, 422 61, G01N 3122

Patent

active

046135758

ABSTRACT:
Organic isocyanates are detected with an indicator comprising bis-4-(dimethylamino)-phenyl-methylenimine-hydrochloride provided on a carrier along with a catalyst for its reaction with the organic isocyanates contained in a tested gas. Through an acid developer brought subsequently into contact with the indicator, this reaction occurs and thus the concentration of the organic isocyanates is made evident by a red coloration of the indicator.

REFERENCES:
patent: 3533750 (1970-10-01), Belisle
patent: 4416966 (1983-11-01), Sanders et al.
Tsigin et al., Spectrophotometric Determination of Isocyanates, Ind. Lab., 44(7), (1978), pp. 921-922.
Foliforova et al., Separate Determination of Residual Isocyanate Groups and Allophanates in Polyurethans, Ind. Lab., 41(6), (1975), pp. 825-827.

Affiliated with

Also associated with

Rating

Indicator for determining organic isocyanates on a carrier does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Indicator for determining organic isocyanates on a carrier, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Indicator for determining organic isocyanates on a carrier will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-766268