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. 

The eugenol portion of the formula may consist of eugenol alone or may be compounded into a viscous fluid by the addition of various additives. The addition of rosin polymerized rosin hydrogenated rosin plasticizing oils, eg, oHve oil accelerators or retarders medicinal additives and other modifiers serve to extend the useflilness of the basic system. 

Butyl phenolic resin is a typical tackifier for solvent-borne polychloroprene adhesives. For these adhesives, rosin esters and coumarone-indene resins can also be used. For nitrile rubber adhesives, hydrogenated rosins and coumarone-indene resins can be used. For particular applications of both polychloroprene and nitrile rubber adhesives, chlorinated rubber can be added. Styrene-butadiene rubber adhesives use rosins, coumarone-indene, pinene-based resins and other aromatic resins. 

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]). 

Tackifiers. Phenolic resins are added to increase strength, oils resistance and resiliency of NBR adhesives. On the other hand, tack and adhesive properties can be improved by adding chlorinated alkyl carbonates. To impart tack, hydrogenated rosin resins and coumarone-indene resins can be added. 

One of the oldest additives is rosin (abietic acid) which improves working, hardening rate and strength (Wallace Hansen, 1939 Molnar Skinner, 1942). El-Tahawi Craig (1971) report that hydrogenated rosin inhibits the formation of crystallites. 

Several attempts have been made to improve the strength of ZOE cements either by adding fillers to the powder or by dissolving resin in the liquid (Wilson, 1975b Smith, 1982a). Examples of fillers used include rosin, hydrogenated rosins, poly(methyl methacrylate), polystyrene, polycarbonate, fused silica and dicalcium hydrogen phosphate. 

The weakness of this cement was its tendency to dissolve in water. This was prevented by including rosin (mainly abietic acid) or hydrogenated rosin in the formulation (Brauer, Simon Sangermano, 1962). Rosin and fused quartz or calcium hydrogen phosphate monohydrate were added to... 

Humphrey A catalytic process for hydrogenating rosin acids. 

Two other patients with cheilitis due to contact allergy to a lipstick reacted positively to glyceryl hydrogenated rosinate, an ester gum, and the main component of the rosinate, glyceryl abietate (both patchtested at 20% in petrolatum) (9). 

Staybelite [Aqualon]. TM for hydrogenated rosin, a pale, thermoplastic resin. Acid number 165, USDA color X, softening point 75C, saponification number 167. 

EINECS 264-848-5 Hydrogenated rosin, pentaerythritol ester Resin acids and Rosin Kids, hydrogenated, esters with... 

Methyl hydrogenated rosinate 2473 233-401-6 Chromic potassium sulfate 851... 

Hydrogenated rosin, pentaerythritol esterl968 271-385-2 C.l. Pigment Green 51 596... 

Hydrogenated rosin, pentaerythritol ester 1968 Hydroxyde de triphenyl-etain 1733... 

In the second example (Table 2), two acrylic adhesive formulations are compared. The first contains a hydrogenated rosin ester tackifier, which shows relatively good UV stability. This tackifier can be replaced by one of lower stability (and lower cost), such as the nonhydrogenated rosin ester, by the incorporation of the appropriate light stabilizers. As these data show, some improvement in stability is seen when a BTZ is used at 0.5% (or a combination of BTZ/HALS at 0.25%/0.25%), but the best stability is achieved when the adhesive is stabilized with a HALS at the same level (0.5%). It should be pointed out that BTZs are commonly used in films and coatings (e.g., automotive clear coats) when the objective is to protect the material below the film. Similar applications can be imagined where UVA-containing adhesive films are used to screen and protect other substrates. 

Formulation contains 70% SEBS and 30% hydrogenated rosin tackifier. Compounded as hot melt. ... 

Chem. Descrip. Glyceryl hydrogenated rosinate CAS 65997-13-9 EINECS/ELINCS 266-042-9 Uses Tackifier resin in NR, NBR, CR, chlorinated rubbers, block copolymers, EVA, adhesives, cements, tapes, and in protective and barrier-type coatings that require exceptional degree of color retention and oxidation resistance... 

Methyl abietate, hydrogenated. See Methyl hydrogenated rosinate... 

CAS 64365-17-9 EINECS/ELINCS 264-848-5 Synonyms Pentaerythritol hydrogenated rosinate Definition Ester of pentaerythritol and hydrogenated acids from rosin Uses Tackifierfor adhesives in protective and barrier-type coatings film-former in cosmetics defoamer in food-contact paper/paperboard in food-contact animal glue in wood preservatives for food contact Features Thermoplastic resin... 

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