Preparation of polymerized soybean oil and soy‐based polyols

Abstract

In the absence of polymerization, soy-based polyols tend to have inadequate hydroxyl equivalent molecular weights for many critical urethane applications. In this article, the polymerization (bodying) of soybean oil is presented as an effective method to increase the molecular weight of soy-based polyols. When bodying is combined with reaction steps for alcohol addition and acid reduction, soy-based polyols suitable for urethane applications can be synthesized. Two different heat-polymerization approaches, catalyzed-and noncatalyzed-bodied soybean oil (BSBO) were evaluated in continuous and batch processing. The catalyzed-BSBO has lower iodine numbers and high viscosities than the noncatalyzed-BSBO. This approach represents one of the least-costly means to increase the hydroxyl equivalent weights of soy-based polyols.

Direct Polymerization of Vernonia Oil through Cationic Means

“…Thus, many publications have appeared on the conversion of triglycerides to polymers [4,5]. These include direct reaction through heat [6][7][8][9], cationic polymerization [10][11][12][13][14], and a condensation reaction after modifications with amine derivatives [15,16]. The triglyceride can also be derivatized with acrylate, which can then be polymerized [17,18].…”

Biobased interpenetrating polymers networks derived from oligomerized soybean oil and polydimethylsiloxane

“…Another approach was to use air plasma to polymerize soybean oil . Alternatively, anthraquinone has been used as a thermal catalyst for the oligomerization of soybean oil in the development of printing inks . In fact the bodying of triglycerides under thermal conditions is an established technique that has been studied extensively.…”

“…27 Alternatively, anthraquinone has been used as a thermal catalyst for the oligomerization of soybean oil in the development of printing inks. 28,29 In fact the bodying of triglycerides under thermal conditions is an established technique that has been studied extensively. One typical example describing the use of heat and catalysts to increase the rate of the dimerization reaction of alkene is described by Lozada et al 29 A semicontinuous process for the bodying of drying oil has also been reported which clearly established that the triglycerides react to yield highly branched structures during this heat bodying process.…”

“…28,29 In fact the bodying of triglycerides under thermal conditions is an established technique that has been studied extensively. One typical example describing the use of heat and catalysts to increase the rate of the dimerization reaction of alkene is described by Lozada et al 29 A semicontinuous process for the bodying of drying oil has also been reported which clearly established that the triglycerides react to yield highly branched structures during this heat bodying process. 30 This thermal polymerization of oils and fats is characterized by increased viscosity products and the formation of high molecular weight polymers with interesting physicochemical properties.…”

Physical Properties of Soy-Phosphate Polyol-Based Rigid Polyurethane Foams

“…Therefore, soybean oil (SBO) is one of the most promising biobased resources as a feedstock of polyols for PU manufacture. Several synthetic approaches have been reported to introduce hydroxyl groups to the triglycerides: (1) hydroformylation followed by hydrogenation [7], (2) epoxidation followed by oxirane opening [8][9][10], (3) ozonolysis followed by hydrogenation [11,12], and (4) microbial conversion [13]. It has been reported that flexible and rigid PU foams could be made with a mixture of petroleum polyol and soybean oil-based polyols [14][15][16].…”