Respiratory Effects of Occupational Exposure to an Epoxy Resin System

Abstract

A standardized respiratory questionnaire and pulmonary function tests were used to examine thirty-four employees of a snow-ski manufacturing plant, including twenty-five workers who were exposed to an epoxy resin system containing the amine hardener 3-dimethylamino propylamine (3-DMAPA). Maximum expiratory flow-volume curves were obtained on Monday and Thursday, before and after each shift, and FVC, FEV1.0, MEF50%, and MEF25% were caculated. Environmental measurements of the total amine levels were found to range from 0.41 to 1.38 ppm. The group with the greatest exposure (0.55-1.38 ppm) showed significant decreases in lung function over Monday and over the week. Although all employees in this group showed decreases in pulmonary function, acute changes were greater in present cigarette smokers and in subjects who reported respiratory symptoms upon exposure to the epoxy resin system. There was no evidence of permanent loss of lung function in subjects with either the highest or longest exposure.

Aetiological agents in occupational asthma

“…Exposure to many other chemical compounds in industries, such as chloramine T, a sterilizing agent used in the food and beverage industry [127], persulphate salts used among hairdressers [128], diazonium salts in photo-copying process [129], reactive dyes in textile industry [130] and azobisformamide in plastics industry can give rise to occupational asthma [131]. It will not be possible to discuss each one of them in detail.…”

Is the incidence of aliphatic amine‐induced occupational rhinitis and asthma underestimated?

“…Seven cases of amine‐related OR (or OR + OA) were finally documented in this series. With the exception of 3‐N,N‐dimethylaminopropylamine (3DMAPA) [Sargent et al, ], the amines responsible for a positive NPT in this series have not been previously reported to be responsible for OR/OA. These amines were tested because all amines must be suspected to be possible asthmagens: many amines are known to be OA inducers (Table ) and quantitative structure‐activity relationships have shown an association between amines and OA hazard [Jarvis et al, ].…”

“…For 3DMAPA (Fig. e), Sargent et al [] reported significant decreases in lung function in workers of a snow‐ski manufacturing plant with the highest exposure to this amine, used as an epoxy resin hardener.…”

Mise au point d’une suspension bactérienne épaissie pour l’exobiocicatrisation de matériaux cimentaires fissurés

“…Le colmatage des microfissures est actuellement réalisé a l'aide de résines synthétiques. Toutefois, ces composés sont toxiques et polluants, et nécessitent un renouvellement régulier du traitement [1][2][3] ; ce qui augmente le coût et l'impact environnemental générés par ces réparations. L'agent de réparation du futur pourraitêtre la calcite biogénérée, un matériau durable et naturel.…”