Description

Fatty acids, (C=18)-unsatd., dimers polymer with formaldehyde,1,2,3-propanetriol, 2,2-bis(hydroxymethyl)-1,3-propanediol, rosin and 4-(1,1,3,3-tetramethylbutyl)phenol CAS NO 161075-20-3 is a specialized polymeric resin synthesized from dimerized unsaturated C18 fatty acids, polyols, rosin, and a phenolic stabilizer. This complex formulation is engineered to deliver exceptional adhesion, tackifying properties, and thermal stability, making it a critical performance additive. It is primarily sought after by manufacturers in the adhesives, sealants, coatings, and ink industries for formulating high-performance products.

Application

• Hot-Melt Adhesives (HMA): Acts as a key tackifier and modifier, enhancing adhesion to diverse substrates including plastics, metals, and paper.
• Pressure-Sensitive Adhesives (PSA): Used in tapes and labels to improve peel strength, tack, and cohesive balance.
• Industrial and Construction Sealants: Imparts flexibility, adhesion, and durability in formulations for joints and gaps.
• Protective and Industrial Coatings: Functions as a resin modifier to improve film formation, gloss, and chemical resistance.
• Printing Inks: Enhances pigment wetting, printability, and substrate adhesion, particularly in specialty ink applications.
• Rubber Compounding: Serves as a processing aid and tackifier in various rubber products.
• Polymer Modification: Used to tailor the properties of other polymers, improving compatibility and performance.

Basic Information

Item	Detail
Product Name	Fatty acids, (C=18)-unsatd., dimers polymer with formaldehyde,1,2,3-propanetriol, 2,2-bis(hydroxymethyl)-1,3-propanediol, rosin and 4-(1,1,3,3-tetramethylbutyl)phenol
CAS No.	161075-20-3
Molecular Formula	Complex Polymer Mixture
Molecular Weight	Contact for details
Synonyms	Rosin-modified fatty acid dimer polyol polymer; Dimer acid-rosin-polyol polymer; Tackifying resin based on dimerized fatty acids and rosin; Phenolic-modified rosin ester with dimer acid polyol; Adhesive tackifier resin CAS 161075-20-3; Polymer of dimerized fatty acids, formaldehyde, pentaerythritol, glycerol, rosin, and octylphenol
EINECS	Contact for details

Quality Control

Our production of this polymeric resin adheres to strict quality management protocols to ensure batch-to-batch consistency and performance reliability. Key parameters such as acid value, softening point, color, and viscosity are rigorously monitored. Certificates of Analysis (COA) documenting these specifications are available for every shipment upon request.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated area at room temperature (15-25°C). Keep away from heat sources and open flame. Under these conditions, the product is typically stable for 24 months from the date of manufacture.

Specification

Item	Specification
Appearance	Amber to brown solid/paste
Softening Point (Ring & Ball)	85 - 105 °C
Acid Value	< 20 mg KOH/g
Color (Gardner)	< 12
Viscosity (at 160°C)	Contact for details
Identification (IR)	Conforms

Note: Specifications can be tailored. Please contact us for the detailed technical data sheet of a specific grade.