OH Terminated PDMS (107 silicone rubber base polymer) is linear hydroxyl‑terminated polydimethylsiloxane. It can react with silane cross‑linkers under catalyst via condensation reaction, forming elastic RTV silicone rubber at room temperature. With adjustable viscosity grades, excellent weather resistance, low‑temperature flexibility and dielectric performance, this polymer is widely used as core base material for various RTV silicone compounding in sealants, adhesives, potting and mold‑making i

Product Detail

Product Overview

OH Terminated PDMS Raw Material CAS 70131‑67‑8, also known as 107 silicone rubber base polymer, is linear silanol‑terminated polydimethylsiloxane. Reactive hydroxyl groups locate at both ends of molecular chain. Under catalysis, it performs condensation cross‑linking reaction with multi‑functional silane cross‑linkers to produce room‑temperature vulcanized silicone elastomer. Different viscosity specifications satisfy diversified formula requirements for two‑component RTV silicone products.

Key Features

Reactive hydroxyl end‑groups, stable condensation curing performance at room temperature
Multiple available viscosity grades, flexible for different RTV formulation designs
Excellent compatibility with silica fillers, plasticizers and silicone auxiliaries
Cured rubber delivers outstanding weather resistance, ozone resistance and low‑temperature elasticity
Good electrical insulation property, low volatility for industrial silicone processing

Main Applications

‑ Base polymer for general two‑component RTV silicone formulation ‑ Raw material for silicone sealant, adhesive and potting compound ‑ Mold‑making silicone rubber compounding ‑ Condensation cure silicone elastomer production ‑ Custom RTV silicone compound manufacturing

Usage Recommendation

Carry out feeding, mixing and compounding under low‑humidity environment. Combine with cross‑linking agent, catalyst, reinforcing filler and other additives according to formula. Strictly avoid moisture ingress, which will cause premature curing or defective vulcanization. Adjust viscosity and filler dosage to obtain target mechanical properties of finished silicone products.

Storage & Package

Store in cool, dry and hermetically sealed warehouse. Keep away from moisture, water vapor and humid air to prevent pre‑crosslinking. Standard iron drum packaging. Seal drum tightly immediately after partial material taking. All container opening operations must be completed under dry conditions.

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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.