Abstract:
Provided herein are rosin-containing materials, including crude tall oil (CTO), tall oil rosin (TOR), distilled tall oil (DTO), crude fatty acid (CFA), as well as methods of making thereof. The rosin-containing materials can exhibit improved color (e.g., a reduced Gardner color), reduced sulfur content, improved color stability, or a combination thereof.
Abstract:
A method of converting vegetable-based organic acids into corresponding lower alcohol esters. According to the present method, the raw material which comprises organic acids is brought into contact with a lower alcohol in the presence of an acidic catalyst in order to esterify the acids. In the present invention, a reaction mixture is formed of the raw material, which comprises organic acids, and of lower alcohol, and this reaction mixture is brought into conditions under which the mixture cavitates in order to esterify the organic acids and to lower the acid number of the raw material to a value which is at maximum 20 % of the original acid number. With the present invention, it is possible by using esterification to produce, for instance from organic acids of tall oil, such as fatty acids, an inexpensive biodiesel fuel.
Abstract:
A process for producing rosin resins comprising reacting together rosin and phenolic compound and/or terpene-phenol resin, in the presence of a Bronsted acid. These resins may be used as tackifiers in adhesive formulations, including chloroprene contact cements.
Abstract:
A process for efficiently producing a polymerized rosin through a simple step without the need of an advanced equipment; and a novel process capable of efficiently and economically producing a polymerized rosin by reusing the catalyst recovered. A rosin is polymerized in the presence of particles of a copolymer of (a) an ethylenic monomer with (b) a crosslinking monomer copolymerizable with the monomer (a), the particles having an average particle diameter of 0.1 to 3 mm, a specific surface area of 1 to 70 m /g, a pore volume of 0.1 to 1 mL/g, an average pore diameter of 100 to 1,500 ANGSTROM , and a functional acid group content of 2.0 to 7.0 meq/g. The copolymer may be recovered and reused in the rosin polymerization.
Abstract:
A rosin emulsion size for papermaking prepared by dispersing a reaction product in water in the presence of a polymeric dispersant, said reaction product being obtained by reacting a rosin (a) with a polyhydric alcohol (b) and an α, β-unsaturated carboxylic acid derivative (c) sequentially or simultaneously at such a feed ratio that the ratio of the hydroxyl equivalent of component (b) to the carboxyl equivalent of component (a) ranges from 0.1 to 1.5; and a process for sizing paper by using the size in a pH range of 4 to 8.
Abstract:
Condensation products based on colophonium maleic imides are obtained by A) reaction of 100 parts by weight of colophonium with 1 to 20 parts by weight of maleic anhydride at a temperature between 150 and 250°C; B) reaction of the adduct (A) formed in step A with an organic diprimary amine at temperatures between 130 and 250°C, in a molar ratio of anhydride groups to amino groups of 0.8 to 1.2:1; C) reaction of the condensation product (B) formed in step B with a polyalcohol of functionality 3 to 6 at temperatures between 230 and 300°C, in a molar ratio of carboxylic groups to hydroxyl groups of 0.7 to 1.5:1.
Abstract:
An oligoester composition which is a reaction product of a reactant mixture comprising one or more rosins; at least 15% by weight of one or more monocarboxylic acids; and one or more polyhydric alcohols. A method for preparing an oligoester composition comprising (a) esterifying a mixture comprising one or more rosins, one or more monocarboxylic acids, and optionally one or more polycarboxylic acids with one or more polyhydric alcohols to form the oligoester composition. An oligoester composition which is an esterification reaction product of one or more rosins, one or more monocarboxylic acids, one or more polyhydric alcohols, and optionally one or more polycarboxylic acids, wherein the composition has a weight average molecular weight of from 500 g/mol to 8,000 g/mol and a Tg of between -80°C and 100°C.
Abstract:
Trata-se a presente patente de invenção, de um processo de obtenção de goma resina hidrogenada e produtos obtidos através do mesmo, pertencente a área química, particularmente um processo de hidrogenação parcial catalítica da goma resina do breu (colofónia), derivado de Pinus Elliotti e Pinus Tropicalis, na obtenção de um breu menos suscetível à oxigenação e de uma terebintina rica em pinano, utilizando-se catalisadores de Paládio e de Níquel. O invento atende ao mercado de resinas e derivados de breu, o qual possui uma demanda atual por produtos de coloração mais clara, os quais são mais atrativos para o consumidor final de seus produtos, sendo mais resistentes às oxidações por degradação térmica e intempéries naturais e, atendendo também ao mercado de fragrâncias, já que a produção de pinano oferece novas alternativas sintéticas diferentes das encontradas com a utilização do alfa e beta pineno. A presente invenção apresenta um processo de obtenção de goma resina hidrogenada- e produtos obtidos através do mesmo, através do qual o breu hidrogenado é obtido através da hidrogenação a 20 - 3,0 bar H 2 de goma resina derivada de pinus Elliotti e pinus Tropicalis.