DBP

E. Dickhaut Verfahren zur Herstellung eines metallisehen Priifkorpers zur tlberwachung von Magnetpulver-Priifllussigkeiten DBP 2357220 (1977)... 

Douhle-Pipe (DBP 1191), Penn Alert ESP, a subsidiary of Midwesco, Inc., Niles, hi., 1991. 

Plasticizer Efficiency. This is a measure of the concentration of plasticizer required to impart a specified softness to PVC. Such a softness of material may be measured as a British Standard Softness (BSS) or a Shore hardness (Pig. 1). Por a given acid constituent of plasticizer ester, ie, phthalate, adipate, etc, plasticizer efficiency decreases as the carbon number of the alcohol chain increases, eg, for phthalate esters efficiency decreases in the order DBP > DIHP > DOP > DINP > DIDP > DTDP. An additional six parts per hundred in PVC of DIDP rather than DOP is required to give a hardness of Shore 80 when ah. other formulation ingredients remain constant. The consequence of this depends on the overall formulation and product costs. In addition to size of the carbon number of the alcohol chain, the amount of branching is also significant the more linear isomers are of greater efficiency. 

DTDP > DIDP > DINP > DOP > DIHP > DBP. Higher molecular weight esters such as trimeUitates are even more thermally stable and trimeUitate esters find extensive use in the demanding cable specifications which have strict mass loss requirements. 

Polystyrene. Polystyrene shows compatibiHty with common plasticizers but modification of properties produced is ofHtde value. Small amounts of plasticizer (eg, DBP) are used as a processing aid. 

Studies on the use of high molecular weight esters in nitrile mbber have led to further studies to compare DINP with DBP. These showed that at the 10 phr level the nitrile mbber was effectively plasticized with DINP (35). 

Atmospheric photodegradation of DEHP and DBP has been shown to be rapid (51,53) with half-life times of less than 2 days, hence a large proportion of phthalate emissions to the air are broken down by photodegradation. 

Atmospheric Toxicity. The only known atmospheric toxicity effect of phthalates is the phytotoxicity arising from the use of DBP plasticized glazing bars in greenhouses. However, the higher phthalates such as DEHP are not phytotoxic. General atmospheric concentrations of phthalates are extremely low and it is concluded that they pose no risk to plants or animals. 

Many organic reagents have been used successfully in Pu separation processes. The reagents include tri- -butyl phosphate (TBP) methyl isobutyl ketone thenoyl ttifluoroacetone (TTA) ethers, eg, diethyl ether, di- -butyl ether, tetraethylene glycol dibutyl ether trdaurylamine (TT,A) trioctylamine (TOA) di- -butyl phosphate (DBP) hexyl-di(2-ethylhexyl) phosphate (HDEHP) and many others. Of these, TBP is by far the most widely used (30,95). 

ASTM number Iodine number DBP CTAB N2 absorption... 

A third study (85) enrolled 7825 hypertensive patients (55% males and 45% females) having diastoHc blood pressures (DBP) of 99—104 mm Hg (13—14 Pa) there were no placebo controls. Forty-six percent of the patients were assigned to SC antihypertensive dmg therapy, ie, step 1, chlorthaUdone step 2, reserpine [50-55-5] or methyldopa [555-30-6], and step 3, hydralazine [86-54-4]. Fifty-four percent of the patients were assigned to the usual care (UC) sources in the community. Significant reductions in DBP and in cardiovascular and noncardiovascular deaths were noted in both groups. In the SC group, deaths from ischemic heart disease increased 9%, and deaths from coronary heart disease (CHD) and acute myocardial infarctions were reduced 20 and 46%, respectively. 

In a study with 3427 male and female patients having DBP of 95—109 mm Hg (12—15 Pa), and no clinical evidence of cardiovascular diseases, half of the patients were placebo-treated and half were SC antihypertensive dmg-treated, ie, step 1, chlorothiazide step 2, methyldopa, propranolol [525-66-6], or pindolol [13523-86-9], and step 3, hydralazine, or clonidine [4205-90-7] (86). Overall, when the DBP was reduced below 100 mm Hg (13 Pa), there were more deaths in the dmg-treated group than in the placebo group. The data suggest reduction of blood pressure by antihypertensive dmg treatment that includes a diuretic is accompanied by increased cardiovascular risks. 

The Oslo Trial (87) enrolled 785 male patients <50 years of age with DBP <110 mm Hg (15 Pa) and free of clinical evidence of cardiovascular disease. If the initial DBP was <100 mm Hg (13 Pa), there were no differences in mortaUty or cardiovascular events in the placebo- or dmg-treated groups. If the initial DBP was >100 mm Hg, then the incidence of cardiovascular disease was greater in the dmg-treated than in the placebo-treated group. 

It has been found that the influence of the membrane composition on the ISE selectivity is mainly governed by substitution degree of the nitrogen atom, but virtually does not depend upon the length of hydrocarbon substituents. The key factor in the selectivity of DBP-plasticized membranes with both kinds of ion-exchangers and of the o-NPOE-TNOBS-membrane is the ionic... 

The method of detecting dimethylterephthalate (DMTP), dibuthyl-phthalate (DBP) and diocthylphthalate (DOP) in aqueous extract is based on their extraction with an organic solvent (hexane) and subsequent concentration using gas-liquid chromatography and an electron-absorbing detector. The detection limit is 0.05 mg/dirf for DMTP and DBP, and 0,01 mg/dm for DOP. 

More detailed theoretical approaches which have merit are the configurational entropy model of Gibbs et al. [65, 66] and dynamic bond percolation (DBP) theory [67], a microscopic model specifically adapted by Ratner and co-workers to describe long-range ion transport in polymer electrolytes. 

DBP theory provides the simplest model which includes information on local mechanistic processes, and involves ion... 

A practical method of prepg this compn was by the addition of a soln of the coating agent to an aq RDX slurry. Based on the quality of the product and the pellet densities obtained, a procedure of adding an acet soln of PVA + DBP to a hot w slurry of RDX, under agitation, was adopted as standard... 

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