ALKYD RESIN PRODUCTION PROCESS FILETYPE PDF

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Ezugwu, et al. It is derived from polyols and a dicarboxylic acid or carboxylic acid anhydride. The term alkyd is a modification of the Abstract original name "alcid", reflecting the fact that they are derived from alcohol and organic acids. Alkyd resin is defined as the reaction Alkyd resin was synthesized from the flamboyant Delonix regia seed oil FBO and the physico-chemical properties of both the oil product of an oil or fatty acid, polyol and polyacid used in many and the consequent alkyd resin were studied.

Fourier Transform solvent-based paint systems [1]. The original alkyds were compounds Infra-red FTIR spectroscopy was used to investigate the functional of glycerol and phthalic acid sold under the name Glyptal. Alkyd resins groups present in the alkyd resin.

MATLAB was used to generate have acquired a good reputation because of their economy, availability model equations for the extent of reaction for the synthesis of the of raw materials and ease of application. They are to a greater extent alkyd resin. Other physico-chemical properties of the oil constitutes environmental pollution and degradation [2].

It is noted for its fern-like leaves cm3, 0. The synthesized it is grown as an ornamental plant and in English it is given the name alkyd resin from flamboyant seed oil FBOAR was dark-brown in Royal Poinciana or Flamboyant. It is one of several plants known as colour while that of the commercially prepared alkyd resin CPAR Flame plant and is endemic to the western forests of Madagascar but was colourless. Physico-chemical properties of FBOAR such has been introduced into tropical and sub-tropical regions worldwide.

Unless harvested, the seedpods often These values were not significantly difference when compared to those of CPAR that were determined to be They lie in shallow groves inside the seedpod. Once degree of polymerization Dp of in-process alkyd sample with time the pods turn brown and harden, the seeds can be harvested. Tropical were studied.

Viscosity, Dp and Re increased with time while AV flamboyant seeds can take a long time to germinate anywhere from decreased with time. The IR spectra of the test alkyd resin and the 12 to days, but there are some pretreatment methods that can commercially prepared alkyd resin showed that the broad band be used to speed up germination. Tropical flamboyant plant seeds can shoulder around The peak value within the range of Tropical flamboyant seeds generally have a 90 to resins corresponds to SCN and the peak height observed around percent germination rate when treated before planting [3,4].

It has From the performance tests, it was observed that the saponins, alkaloids, carotene, hydrocarbons phytotoxins, Lectins and drying trend in terms of fast-to-dry was faster in CPAR than FBOAR flavonoids.

Delonix regia also contains tannins, phenolic compounds, and both were observed to be highly resistant to water. CPAR glycosides, sterols, and triterpenoids. The decoction of the leaves is showed higher resistant to acidic medium than FBOAR and both traditionally used in treating gastric problems, body pain, and rheumatic were poorly resistant to alkaline medium. Results so far obtained pains of joints.

There are also reported biological activities of Delonix from this study suggest that the FBO and FBOAR exhibited good regia plant, where it showed evidence of anthelmintic, antimicrobial, performance characteristics even when FBOAR was compared with the commercially produced alkyd resin and there are similar functional anticancer, antirheumatic, antimalarial, antioxidant, hepatoprotective, groups in the compounds observed in the absorbance of IR spectra.

However, there is markedly lack of data and information in current literatures about synthesis of alkyd resin from Delonix regia seed oil. J Polym Sci Appl A Picometer was rinsed with distilled water, followed by acetone and allowed to dry.

The empty Picometer was weighed and recorded Instruments as W1. A known volume of water with the picometer was also weighed Instruments such as industrial blender, electronic weighing and recorded as W2. An equal volume of the oil sample with the balance, desiccators, quick fit neck pyrex , soxhlet extractor timble, picometer was weighed and recorded as W3.

The SG was calculated reflux condenser, hot plate model no. The machine was turned. The cell was rinsed with Methods water, followed by acetone and allowed to dry by draining it. The oil sample was added into the cell and the reading taken respectively. Extraction of seed oil Determination of viscosity The seeds of flamboyant plant were sun-dried to a constant weight for about three 3 weeks and then subjected to temperatures Viscosity of the oil was determined at 30oC using a U-tube of about 40oCoC for two 2 hours in an oven.

The seeds 2. The Viscometer was rinsed with organic solvent acetone were grinded using industrial grinding machine and then stored in and allowed to dry.

A small quantity of the oil sample was added from desiccators for further study. The oil from the seeds was extracted one end of the viscometer with micro pipette to fill the mark. At the using soxhlet extraction methods. The extraction process was done release of each sample, a stop watch was put on and the time taken using N-hexane of boiling range 64oC oC as described by [6].

The reading of the calibrated mark reached at an interval of oil sample for analysis and the extracted oil was quantified time was taken and multiplied by a constant factor 0. Determination of physical characterization of seed oil Determination of iodine value The colour of the oil sample was determined by observation Iodine value is used to determine the amount of unsaturation using colour sensation of the human eyes.

Specific gravity SG was present in an oil sample. Iodine is only slowly absorbed by oil but determined at 30oC using Picometer. The unsaturated bonds present takes up the iodine to Determination of oil yield saturate the double bonds and the remaining unabsorbed iodine is The percentage yield of the seed oil extracted was determined by then titrated by means of sodium thiosulphate.

The method of [7] as weighing the dried grinded seed powder and the concentrated oil and used in determining the iodine value. The density of the oil sample was determined by the method Determination of peroxide value described below. For peroxide value PV , 1g of the oil sample was weighed into Procedure: a ml conical flask, then 25ml of glacial acetic acid:chloroform solvent was added. This was followed by addition of 1ml of saturated The mass of the empty measuring cylinder was determined using KI and the mixture left in the dark for 1 minute.

Next, 30ml of distilled an electronic balance. A blank determination was measuring cylinder and weighed using the electronic balance. Acid value of the in-process sample taken at intervals was determined by titrating with a 0. The empty Picometer was weighed and recorded After setting up the above apparatus Figure 2 , 50g of the oil as W1. A known volume of water with the picometer was also weighed sample and 2g of CaCO3 catalyst were charged into the reactor.

The and recorded as W2. Another equal volume of the alkyd sample with mixture was heated up to about oC. At oC, 20g of glycerol was the picometer was weighed and recorded as W3. The SG was calculated added and heated up to oC, maintained for 30 minutes with using the equation below vigorous agitation to cause trans esterification of triglyceride into a mixture of mono- and diglyceride oils [10].

The cell was rinsed was increased to oC continuous stirring to build the molecular with water, followed by acetone and allowed to dry by draining it. Excess phthalic anhydride 5g was added to The sample was added into the cell and the reading taken respectively.

Water was thus removed with the unreacted acid by heating the bulk to temperature above oC with continuous stirring. Viscosity of the alkyd was determined at 30oC using a Viscometer.

The Viscometer was rinsed with organic solvent acetone and allowed The process of reaction was monitored by periodically checking to dry. A small quantity of the oil sample was added from one end of of acid number and viscosity. The resulting solution was stopped the viscometer with Micro pipette to fill the mark. At the release of Figure 1: Flamboyant plant Delonix regia and flamboyant seeds [5]. Figure 2: Scheme of alkyd resin reactor [10].

This model equation would be very useful as it will taken and multiplied by a constant factor 0. The compliance of the generated model with the experimental results ascertains the efficacy of the equation.

Determination of acid value Structural Analysis by Fourier Transfer Infrared Spectros- It was calculated using the same formula and procedure as that used in the characterization of seed oil [13]. The unsaturated bonds present takes up the iodine to Performance characteristics of the alkyd resin saturate the double bonds and the remaining unabsorbed iodine is The performance characteristics of the flamboyant seed oil alkyd then titrated by means of sodium thiosulphate. The drying process was monitored in as a result of oxidation owing to the availability of oxygen during terms of the time of set-to- touch, surface-dry and dry-through.

In all storage. Peroxide value can be a useful early indicator of oxidative of the comparative examples, the tests were carried out under similar deterioration and a decrease in the effectiveness of the oils own conditions and the results are comparable. Below is the formula to antioxidants. During oxidative deterioration the peroxide value first ascertain the amount of dryer required: rises and then falls after reaching a maximum value. The peroxide metal required 9 value of FBO The chemical resistance was determined at room temperature Saponification value gives an indication of the size of the using the method [16].

This parameter is significant in soap manufacturing industries and also in biodiesel production. The Physico-chemical properties of the seed oil lower the saponinfication value, the higher the molecular weight The physicochemical properties of the oil sample extracted from, of the hydrocarbon and vice versa. The saponification value of the Delonix regia flamboyant seeds are as shown in the Table 1.

The saponification value Colours in the oils are most likely due to seed and linseed oils which had The refractive index of the oil was 1. Generally, oils are classified into three categories based on their iodine values; oils with iodine values of are non- The oil content for flamboyant seed was found to be The value in some cases was comparable to those reported values greater than [19].

COMPUTABILITY TURING GODEL CHURCH AND BEYOND PDF

Alkyd Resin Production Process Filetype Pdf

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COMPENDIO DE TEOLOGIA ASCETICA Y MISTICA TANQUEREY PDF

This invention is related to a process for the manufacture of alkyd resins and in particular to an improvement in this process. Conventional processes for the preparation of alkyd resins use an esterification reaction to react a polybasic acid and a polyhydric alcohol, and usually, an esterification catalyst is used. The reaction either uses a solvent or can be accomplished without the presence of a solvent. A problem arises at the completion of the process, since the reaction must be stopped rapidly. One technique that is used is to rapidly dissolve the resin in a solvent for the resin which is at a relatively low temperature, and this stops the reaction. If the reaction is not stopped, the resin will gel, crosslink, and harden in the reaction vessel, and very costly maintenance is required to remove the resin.

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What is 'Clash Royale Deck Builder'? After playing Clash of Clans for years and creating I wanted to move on to a new game that interested me but also had depth. In the United States Vinyl Toluene has been used to modify alkyd resins for many. Production line pre. The base alkyd with VT. This process is known as post. Manage your page to keep your users updated View some of our premium pages: google.

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