Glycerol ester of hydrogenated rosin

Rosin ester resins are used as modifiers in the formulation of chewing gum. The rosin derivative modifies the physical properties of the polymer used, providing the desired masticatory properties. The glycerol ester of hydrogenated rosin is the predominant choice, because stabilized materials have improved aging resistance, which extends the shelf life of the gum. 

Rosins and rosin derivatives. The resins more commonly used in rubber base adhesives are rosin esters, particularly glycerol and pentaerythritol esters, as well as rosins modified by disproportionation and hydrogenation. The glycerol ester of hydrogenated rosin has been reported to be an excellent tackifier for polychloroprene adhesives (see pp. 344-357 in [17]). 

Giyceryi hydrogenated rosinate CAS 65997-13-9 EINECS/ELINCS 266-042-9 Synonyms Glycerol ester of hydrogenated rosin Resin acids and rosin acids. 

Staybelite Ester 10 Glycerol ester of hydrogenated rosin 83... 

Figs. 11 and 12 show two other tackifier resins for carboxylated SBR s. The polymer tackified was Latex A of the previous figures. The two resin emulsions used in these figures are the glycerol ester Of hydrogenated rosin and a hydrocarbon resin (both... 

Polyken Tack and Shear Adhesion of a Carboxylated SBR Latex Tackified with an Emulsion of the Glycerol Ester of Hydrogenated Rosin or a Modified Cg Aromatic Resin Emulsion... 

Glycerol ester of hydrogenated rosin Single dynamic mechanical loss peak I had 25 % styrene II had A/ = 500 Class and Chu (1985c)... 

Glycerol ester of rosin Pentaerythritol ester of rosin Dimerized rosin Esters of hydrogenated rosin... 

Since Maly first esterified rosin in 1865, practically every conceivable ester of rosin has been prepared, including the glycerol ester, called ester gum, introduced in 1900 for lacquers and printing inks. The methyl ester of hydrogenated rosin is used as a plasticizer in lacquers. Pentaerythritol esters, unmodified and modified with maleic anhydride and phenol-formaldehyde, are used in varnishes. In 1937, the coatings industry used 20 million pounds of phenolic resins modified with ester gum in 1987,66 million pounds were used. Phenolic resins modified with up to 80% ester gum were called 4-hour enamels. Because these enamels possess excellent resistance to hot water and alkali, ester gum replaced damar, copal, and kauri gums in paints, lacquers, and enamels in combination with tung oil. 

During the last several decades, naturally derived masticatory substances have been displaced to a considerable degree by synthetic materials — for reasons of availability, economics, and. frequently, better control over purity. These developments essentially paralleled the development of Ihe synthetic rubbers for industrial uses. Some of the synthetic substances now used and listed in the "Food Chemicals Codex, published by the National Academy of Sciences (Washington. DC) include- butadiene-styrene 75/25 rubber butadiene-styrene 50/50 rubber glycerol ester of partially dimerized rosin glycerol ester of partially hydrogenated wood... 

Glycerol Ester of Partially Hydrogenated Gum Rosin occurs as a medium-hard, pale amber-colored resin (color N or paler as determined by ASTM Designation D 509). It is produced by the esterification of partially hydrogenated gum rosin with food-grade glycerin and purified by steam stripping. It is soluble in acetone and in toluene, but is insoluble in water and in alcohol. 

Glycerol Ester of Partially Hydrogenated Wood Rosin... 

Infrared Spectra / Glycerol Ester of Partially Hydrogenated Wood Rosin / 723... 

Foral 85 Glycerol ester of highly hydrogenated rosin 82... 

The next series (Figs. 8-10) show the types of properties obtained with two different carboxylated SBR latexes tackified with the same ion-tolerant emulsion of the glycerol ester of highly hydrogenated rosin. Fig. 8 shows the property of probe tack. Both of the carboxylated latexes exhibit some inherent tack properties, but the probe tack is improved even further with increasing levels of the resin. The extent to which the tack is improved is dramatically different depending on which latex is used. Pig. 9 demonstrates the differences even further. Resin modification of Latex B which is the lower molecular weight polymer. 

Table 9. Tackification of Acrylic Latexes with Emulsions of the Glycerol Ester of Highly Hydrogenated Rosin or the Phthalate Ester of Hydroabietyl Alcohol...

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