Description

(1,1,3,3-Tetramethyldisiloxane-1,3-Diyl)Dipropane-1,3-Diyl Diacrylate is a specialized organosilicon acrylate monomer featuring a central disiloxane bridge. This compound is engineered to impart unique properties such as enhanced flexibility, thermal stability, and hydrophobicity when incorporated into polymer matrices. It is a critical raw material for advanced material scientists and formulators in the photocurable resin, pressure-sensitive adhesive (PSA), and high-performance coating industries.

Application

• UV-Curable Coatings & Inks: Acts as a reactive diluent and crosslinker to enhance flexibility, adhesion, and weatherability in formulations for optical fibers, electronics, and graphic arts.
• Pressure-Sensitive Adhesives (PSAs): Used to modify acrylic polymer backbones, improving low-temperature performance, tack, and silicone-like release properties.
• Release Coatings: A key component in silicone-modified release liners for labels and tapes, providing controlled adhesion.
• Optical Encapsulants & Sealants: Imparts low stress, high transparency, and thermal shock resistance in LED packaging and electronic component protection.
• Dental & Biomedical Materials: Serves as a co-monomer in photocurable composites for restorative dentistry and biocompatible device coatings.
• Modifier for Specialty Polymers: Incorporated into polyurethanes, epoxies, and acrylics to enhance hydrophobicity, dielectric properties, and thermal-oxidative stability.

Basic Information

Product Name	(1,1,3,3-Tetramethyldisiloxane-1,3-Diyl)Dipropane-1,3-Diyl Diacrylate
CAS No.	17898-71-4
Molecular Formula	C18H32O6Si2
Molecular Weight	400.62 g/mol
Synonyms	1,3-Bis(3-acryloxypropyl)-1,1,3,3-tetramethyldisiloxane; Tetramethyldisiloxane Diacrylate; Acrylated Siloxane; Bis(3-acryloxypropyl)tetramethyldisiloxane; Siloxane Diacrylate; TMDS Diacrylate; Sila-Acrylate Monomer; Photocurable Siloxane
EINECS	Contact for details

Quality Control

Our production of (1,1,3,3-Tetramethyldisiloxane-1,3-Diyl)Dipropane-1,3-Diyl Diacrylate adheres to stringent quality management protocols. Each batch undergoes rigorous analytical testing, including chromatographic purity analysis (HPLC/GC) and functional group verification (IR, NMR), to ensure consistency and performance. A comprehensive Certificate of Analysis (COA) detailing assay, identity, and impurity profiles is provided with every shipment.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated place at temperatures between 15-25°C (59-77°F). This material is light-sensitive (store away from light) and easily oxidized (store under inert atmosphere). For long-term storage, it is recommended to blanket the container headspace with an inert gas such as nitrogen or argon.

Specification

Item	Specification
Appearance	Clear, colorless to pale yellow liquid
Identification (IR)	Conforms to reference spectrum
Purity (GC/HPLC)	≥ 97.0%
Acid Value	≤ 1.0 mg KOH/g
Water Content (KF)	≤ 0.1%
Refractive Index (n20D)	1.440 - 1.450
Density (20°C)	0.98 - 1.02 g/cm³

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