Extra Light Color Hydrogenated Rosinates

The fully light colour rosinates for specialty applications

FOREVEREST^® Extra Light Color Hydrogenated Rosinates (CHRDs) are modified rosin derivative. This group has a fully light color appearance in Hazen unit, which are mainly used in adhesive industry, especially used in screen protection film, medicinal patch, diaper adhesives, PSA and HMA. Based on refined hydrogenated rosin, Extra light color rosinates through the process on pretreatment, steam distillation, vacuum steam distillation and vacuum distillation to separate the crude oil, resin acid, fatty acid and oxide resins. Then after esterification, this group appears light color, low odor, excellent heating resistance, weathering resistance, high softening point and other characteristics.

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SUPER EXCELLENT PERFORMANCE

The hydrogenation degree can be determined by the content of Tetrahydro-resin acid/ester and Dihydro-resin acid/ester. CHRDs show a high level of hydrogenation (see Table 1), which represents the latest hydrogenation technology in China, with an ultra-light color and excellent color stability (see Table 2).

Table 1.High level hydrogenation performance of CHRDs

Label	Composition	Tetrahydro-resin acid/ ester, %	Dihydro-resin and Tetrahydro-resin acid/ester, %	Dehydro-resin acid/ester, %
400	Colorless fully hydrogenated rosin	40 to 60	92 min	10 max
GEHR100D, GEHR100H	Colorless glyceryl hydrogenated rosinate	35 to 40	92 min	10 max
PEHR100D, PEHR100E	Colorless pentaerythritol hydrogenated rosinate	35 to 40	92 min	10 max

Table 2.Extra light color stability of CHRDs

Label	Color, @Hazen Unite	Color Stability, @180 to 200°C, 8h, Hazen Unit
400	50 to 100	100 max
GEHR100D, GEHR100H	150 max or 200 max	150 max or 200 max
PEHR100D, PEHR100E	150 max or 200 max	150 max or 200 max

ADVANTAGES OVER OTHER RESINS

Compared to other tackifiers, CHRDs provide an optimum combination of adhesion, clarity, and stability, all important attributes for formulating high-end adhesives. (See Table 3).

Table 3.CHRDs compared with other resins

Advantages over non-hydrogenated rosin resins and partially-hydrogenated rosin resins	Advantages over Hydrogenated hydrocarbon resins
Lighter color Little or no skin sensitizing Improved stability and color retention Better aging resistance Less UV absorption, suitable for UV curable polymer based adhesives	Low or no VOCs Adhere well to low-energy surfaces Bio-based, Environmentally Friendly More polar and narrower in molecular weight, wider compatibility with almost all polymers, especially suitable for acrylic polymers

END-USE & ALTERNATIVES

Foreverest^® Colorless Hydrogenated Rosin Derivatives (CHRDs) are mainly used as tackifiers in adhesives and sealants, especially for acrylic adhesives, while 400 could also be used in soldering fluxes. They are excellent alternatives to Arakawa^® products and Eastman^® products (see Table 4).

Table 4.Alternatives of CHRDs

Label	End-use	Alternatives
400	Adhesives & Sealants Coatings Solder Fluxes	Eastman^® Product Arakawa^® Product
GEHR100D, GEHR100H	Adhesives & Sealants	Arakawa^® Product Arakawa^® Product
PEHR100D, PEHR100E	Adhesives & Sealants	Arakawa^® Product