摘要:
An adhesive composition for use in coupling together two substrates to form a structure, such as for use in coupling together two wooden substrates to form a wooden structure, includes a mixture of a modified guayule resin and soy protein. The modified guayule resin can be a base-solvent modified guayule resin or can be an HiCh-modified guayule resin each respectively formed from an unmodified guayule base resin. The unmodified guayule base resin is obtained in a rubber extraction process of guayule at solvent removal temperatures ranging from 104 to 166 degrees Celsius. The method for forming the adhesive composition includes forming a modified guayule resin and mixing the formed modified guayule resin with soy protein. The adhesive composition, when used in forming structures, provides enhanced wet shear strength as compared with adhesive compositions including soy protein alone.
摘要:
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.
摘要:
The polymerized rosin compound of the invention includes a rosin dimer component (A) including a bifunctional rosin dimer component (a1) represented by formula (1): ROOC—X—COOR, wherein X represents a rosin dimer residue, and R represents hydrogen, an alkyl group of 1 to 5 carbon atoms, or a benzyl group, wherein the rosin dimer component (A) contains a content of the bifunctional rosin dimer component (a1) of 80% by weight or more and the polymerized rosin compound contains a content of the rosin dimer component (A) of 80% by weight or more. The polymerized rosin compound contains a large amount of the bifunctional rosin dimer component and makes it possible to obtain linear polymer with a high molecular weight.
摘要:
An object of the present invention is to provide an adhesive composition that is substantially odorless and has an extremely good color and excellent adhesive properties or tack at low temperatures of about 5° C. and in which deterioration over time caused by heat or light is suppressed. The present invention relates to an adhesive composition comprising a liquid rosin ester compound, the liquid rosin ester compound being obtained by reacting a rosin compound with a C1-10 monohydric alcohol compound and having a Gardner color of 1 or less, a glass transition temperature of −20° C. or less, a degree of esterification of 93 wt % or more, and a ratio (Y′/Y) of the total area of peaks in 16- to 22-min retention time region (Y′) to the total area of all the peaks (Y) measured by gas chromatography under the following conditions of 200 ppm or less.
摘要:
Aliphatically modified rosin resins are prepared by reacting rosin esters with aliphatic monomers. These aliphatically modified rosin resins are compatible with metallocene catalyzed polyolefins and other aliphatic base polymers and are used as tackifiers in combination with metallocene catalyzed polyolefins and other aliphatic base polymers to form adhesive compositions for hot melt and pressure sensitive applications.
摘要:
Glyceride-containing feed for a base catalyzed transesterification with lower alkanol to make biodiesel is pretreated with glycerin separated during the transesterification to partially convert glycerides with lower alkanol contained in the separated glycerin using base catalyst in the separated glycerin while reducing the free fatty acid and phosphorus compound concentrations in the glyceride-containing feed. Unique producer compositions are provided by the pretreatment processes.
摘要:
A process for producing rosin resins comprising reacting together rosin and phenolic compound and/or terpene-phenol resin, in the presence of a Brønsted acid. These resins may be used as tackifiers in adhesive formulations, including chloroprene contact cements.
摘要:
An improved soybean oil ester based epoxy resin and method of making the same is disclosed. A transesterification step is employed to liberate glycerol and to form new fatty acid esters with additional double bonds. The resulting fatty acid esters containing one or more double bonds are epoxidized by reacting with epoxidation reagent. The epoxidized esters serve as monomers in an epoxy resin system, which may be used to manufacture composite materials with improved mechanical properties as compared to materials obtained from epoxidized triglycerides. The soybean based epoxy resin may be used as low-cost and biocompatible coating materials for food and beverage cans.
摘要:
A process for producing rosin resins comprising reacting together rosin and phenolic compound and/or terpene-phenol resin, in the presence of a Brønsted acid. These resins may be used as tackifiers in adhesive formulations, including chloroprene contact cements.