107 Silicone Base Polymer 20000 cst is hydroxyl‑terminated polydimethylsiloxane with CAS 70131‑67‑8. This high‑viscosity 107 gum is optimized for acetoxy cure sealant formulas. It provides excellent mechanical property build‑up after crosslinking, good thixotropy matching and stable batch performance, widely used as core raw material for one‑component acetic type silicone sealant.

Product Detail

Product Overview

107 Silicone Base Polymer 20000 cst is OH‑terminated polydimethylsiloxane, CAS 70131‑67‑8. It is a dedicated base polymer for acetoxy cure silicone sealant. The product owns well‑controlled viscosity and hydroxyl value, which supports stable curing speed and outstanding elastic performance for acetic‑type one‑component RTV sealant. Strict quality control ensures consistent performance among different production batches.

Key Features

20000 cst controlled viscosity for acetoxy sealant formulation
Reactive hydroxyl end groups for acetoxy cross‑linking system
Good compatibility with calcium carbonate, silica and other fillers
Stable curing rate for acetic cure sealant
High elasticity and good tear property after curing
Low volatile content, uniform batch consistency

Main Applications

Acetoxy cure one‑component silicone sealant
Construction acetic silicone sealant
General purpose indoor silicone sealing products
Condensation cure RTV silicone rubber
Silicone compound for sealing application

Processing Suggestions

All feeding, mixing and grinding processes shall be operated under moisture‑isolated condition. Cooperate with acetoxy silane cross‑linker and organotin catalyst. Adjust filler loading and auxiliary additives according to finished sealant modulus, hardness and extrusion rate requirements. Prevent moisture contamination during whole production procedure.

Storage & Packing

Store in cool, dry and ventilated location, tightly sealed. Keep far away from humidity, heat source and sunlight. Standard iron drum packaging. Once drum is partially opened, reseal immediately to avoid moisture entering. Follow proper storage to maintain full shelf‑life.

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107 Silicone Base Polymer 20000 cst CAS 70131-67-8 Raw Material for Acetoxy Sealant

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Jishengya Technology

Shenzhen Jishengya Technology Co., Ltd. is located in Shenzhen, a special economic zone, and is a comprehensive technology enterprise integrating independent R&D, production and sales.