CN104072365A - Preparation method of dioctyl terephthalate (DOTP
The preparation method comprises the following steps: adding the raw materials including terephthalic acid and superfluous octanol to a reaction kettle, adding concentrated sulfuric acid as a...
CN107033003A - A kind of preparation method of DOTP - Google Patents
The present invention relates to a kind of preparation method of DOTP, specially following steps：(1) terephthaldehyde's low-kappa number；(2) octanol is pre-processed；(3) catalytic reaction；(4) finished product is purified to obtain.By experiment, a kind of preparation method for DOTP that the present invention is provided, substantially reduce the time that TPA esterification process
Method for preparing dioctyl terephthalate (DOTP) from waste and old
Dioctyl terephthalate (DOTP) is the primary plasticizer of a kind of excellent property of using of SE (PVC) plastics.It is compared with dimixo-octyl phthalate (DOP) commonly used at present,...
Preparation method of dioctyl terephthalate (DOTP)
The invention discloses a preparation method of dioctyl terephthalate (DOTP). The preparation method comprises the following steps: adding the raw materials including terephthalic acid and superfluous octanol to a reaction kettle, adding concentrated sulfuric acid as a catalyst, controlling the temperature in the reaction kettle to be 0-200 DEG C, reacting for 4.5-5 hours and neutralizing the
WO2014185872A1 - Dotp (di-octly terephthalate)production method
DOTP produced by this method need to be washed with the 2.5% NaOH, and only washing with water is sufficient. After washing with water, Although the product is sent directly to the filter...
- Can DOTP be used in building materials?
- Şimşek et al. added DOTP to concrete, reporting that the electrical resistance of the concrete increased with increased amounts of DOTP. They also found that DOTP could be used in building materials due to its high corrosion resistance .
- Is DOTP a suitable material for film production?
- DOTP can be a suitable material for film production due to its above-mentioned properties. Polyvinyl alcohol (PVA) is one of the preferred film-forming materials because it is non-toxic and non-carcinogenic, and has high thermal stability, high optical permeability, high flexibility and chemical resistance [, , , ].
- What is DOTP used for?
- DOTP is used to produce polymer matrices in copolymers, dyes, unsaturated polyesters, polyisocyanurate foams, textile softeners, polyurethane coatings, cementitious materials [8, 11, , , , , ] and also medical devices .
- What are the advantages of DOTP composite films?
- DOTP provides composite films high hydrophilicity and thermal stability. DOTP composites films should be preferred such as bandages for medical sectors. DOTP blended composite films has very high hardness and elastic modulus value. Novel PVA/DOTP-composite films incorporated with GO and AgNPs were produced.
- Do nanomaterials overshadow the positive effects of DOTP on hardness and elasticity?
- It is evident that nanomaterials used in large amounts overshadow the positive effects of DOTP on hardness and elasticity. The mechanical test results showed that a long mixing time provided more successful homogenization of the composite films.
- Does DOTP reduce the elastic modulus of DP composite film?
- However, when DOTP was used with GO in a PVA matrix, it decreased the elastic modulus of the composite film due to the agglomeration problem of the nanomaterial. The DP composite film modified with AgNPs with the highest elastic modulus was DPA7, with a 7.6 μm thickness (Fig. 5 E).
