CN103524727A - Preparation method of dibenzoate polyethylene glycol
2. the preparation method of dibenzoic acid macrogol ester fluidizer according to claim 1, is characterized in that, carrying out step (1) before, first industrial polyoxyethylene glycol is...
Preparation method of dibenzoate polyethylene glycol plasticizer
The invention discloses a preparation method of a dibenzoate polyethylene glycol plasticizer and aims to solve the technical problem of preparation of the non-poisonous and environment-friendly dibenzoate polyethylene glycol plasticizer. The method comprises the steps as follows: polyethylene glycol and benzoic acid are added into an esterification kettle according to the mass ratio of 1: (1.1
Designing Green Plasticizers: Linear Alkyl Diol Dibenzoate Plasticizers
While several commercial dibenzoate plasticizers, such as diethylene glycol dibenzoate (DEGDB) and dipropylene glycol dibenzoate (DPGDB; see Figure 2), are sold commercially [18,19], these compounds generally contain ether linkages in their central linker connecting the two benzoate moieties.
Di(ethylene glycol) dibenzoate 90 120-55-8 - Sigma-Aldrich
DEGDB can be used as a plasticizer in the fabrication of carbon black composite based sensors, which are used for the detection of electronic noise systems. [ 3] [ 4] It may be homogenized with poly (vinyl fluoride) and polysulfone based composite to prepare an electrolyte for lithium ion batteries. [ 5] Packaging 1, 4 L Safety Information
Preparation method of plasticizer diethylene glycol dibenzoate
The invention relates to a preparation method of a plasticizer, particularly a preparation method of a plasticizer diethylene glycol dibenzoate, which comprises the following steps:...
- Does diethylene glycol dibenzoate biodegrade?
- No articles found. The kinetics of the biodegradation of two commercial plasticizers, diethylene glycol dibenzoate (D (EG)DB) and dipropylene glycol dibenzoate (D (PG)DB), as well as two alternative plasticizers, 1,3-propanediol dibenzoate and 2,2-methyl-propyl-1,3-propanediol dibenzoate, were investigated in an aerated bioreactor.
- Are dibenzoate plasticizers toxic?
- For example, low toxicity and high rates of biodegradation were reported for a blend of dibenzoate plasticizers, Benzoflex ® 2888, consisting of diethylene glycol dibenzoate (D (EG)DB), triethylene glycol dibenzoate, and dipropylene glycol dibenzoate (D (PG)DB) , .
- What is the pathway for degradation of monobenzoate?
- In this case, the only possible pathway for degradation of this monobenzoate is a slow hydrolysis to yield benzoic acid and dipropylene glycol. 1,3-propanediol dibenzoate, an alternative plasticizer, does not have the ether bond that is present in the commercial plasticizers.
- Does 1 3-propanediol dibenzoate degrade to benzoic acid?
- The lower figure includes a magnified representation of 1,3-propanediol monobenzoate and benzoic acid data to show trends in the first 400 min. 2,2-Methyl-propyl-1,3-propanediol dibenzoate was degraded to monobenzoate and benzoic acid but degradation of benzoic acid seemed to be rapid and, thus, only trace amounts were detected (Fig. 5).
- What was the first step in the biodegradation of plasticizers?
- The first step in the biodegradation was always the hydrolysis of an ester bond, releasing the corresponding monobenzoate and benzoic acid. Biodegradation of plasticizers and their associated metabolites were modeled using a Monod-type kinetic model.
- Do ether bonds affect the biodegradation rate of dibenzoate plasticizers?
- Conclusions A study of the kinetics of the biodegradation of dibenzoate plasticizers demonstrated the importance of ether bonds and alkyl branches on the rate of biodegradation of plasticizers and their metabolites. Removing the ether bond significantly enhanced the biodegradation rate of the monobenzoates.
