OH Polymer Raw Material for Insulating Glass Sealant is hydroxyl‑terminated polydimethylsiloxane with CAS 70131‑67‑8. As core base polymer for secondary insulating glass sealant, it shows good miscibility with reinforcing fillers and neutral alkoxy cross‑linkers. After curing, the silicone sealant features low water vapor transmission rate, high elastic recovery and superior ageing resistance, which protects insulating glass cavity and extends service life of hollow glass assemblies

Product Detail

Product Overview

OH Polymer Raw Material is hydroxyl‑terminated polydimethylsiloxane, also known as 107 silicone base polymer, CAS 70131‑67‑8. It is specially developed as base resin for two‑component secondary insulating glass sealant. Precisely controlled hydroxyl value and stable viscosity ensure steady cross‑linking reaction with alkoxy silane cross‑linkers. Strict impurity control helps finished sealant achieve low water vapor permeability. Reliable batch consistency supports continuous mass production for hollow glass deep‑processing industry.

Key Features

Custom‑designed for secondary insulating glass silicone sealant
Controlled hydroxyl end‑groups for stable neutral condensation curing
Outstanding compatibility with reinforcing mineral fillers
Contributes to low water‑vapor‑permeability performance after curing
High elastic recovery to absorb thermal expansion and contraction stress
Excellent UV and outdoor weathering resistance for long‑term service
Low volatile content, no adverse effect on insulating glass internal space
Good batch‑to‑batch repeatability for large‑scale formulation

Main Applications

Two‑component secondary insulating glass silicone sealant
Hollow glass unit edge sealing compound
Neutral condensation‑cure silicone for glass deep processing
Weather‑resistant sealing for building glass assembly
Custom silicone compound requiring low moisture permeability
High‑elasticity construction sealing silicone formulations

Processing Suggestions

Complete feeding, kneading and dispersion processes under strictly moisture‑isolated workshop environment. Formulate together with reinforcing fillers, alkoxy cross‑linking agent and organometallic catalyst. Optimize filler loading to meet requirements on modulus, hardness and water vapor transmission rate. Prevent moisture contamination throughout whole manufacturing process to avoid curing defects.

Storage & Packing

Store in cool, dry and ventilated warehouse. Keep iron drum tightly sealed. Keep away from humidity, heat sources and direct sunlight. Reseal drum immediately after partial material discharge. Proper storage condition maintains polymer reactivity and ensures valid shelf‑life.

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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.