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Premium Silane Modified Polymers from China

Risun Polymer China Co., Ltd – Global leader in STP, SMP, SPUR, and Hybrid Polymer manufacturing since 2011. Trusted by 500+ companies worldwide for high-performance, eco-friendly adhesive and sealant solutions.

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Your Professional & Reliable Partner

Risun Polymer International Co., Ltd, founded in 2011, is the pioneer in silane-terminated polyether (STP) polymer manufacturing in China. We deliver innovative, eco-friendly polymer solutions for adhesives, sealants, and surface coatings across global industries.

Risun Polymer Factory

Why Choose Risun Polymer?

  • Industry Pioneer: First company in China to design and manufacture STP polymers
  • Global R&D: Dual R&D centers in Huai’an, China and Philadelphia, USA
  • Massive Capacity: 100,000 tons annual production capacity with fast lead times
  • Quality Assured: ISO9000 certified with strict quality control and global distribution
  • Technical Support: Dedicated team providing formulation and application guidance
2011
Founded
250+
Employees
100K
Tons/Year

Our Core Product Categories

Silane Modified Polymer

High-performance base for adhesives and sealants with excellent adhesion and durability.

Silane Terminated Polyether

Moisture-cured polymers ideal for flexible, low-VOC formulations.

Hybrid Polymer

Combines benefits of polyurethane and silane technologies.

Silyl Modified Polymer

Versatile SMP resins for high-strength, paintable sealants.

Functional Polymers

Tailored solutions for DIY, automotive, and industrial applications.

Featured Products

Precast Joint Sealant

Precast Joint Sealant – Modified Silicone Polymer

  • Reactivity: High Reactive
  • Modulus: Low Modulus
  • Eco-Friendly: Low VOC, Solvent-Free
  • Application: Construction, Precast Concrete
DIY Sealant Functional Polymers

DIY Sealant – Functional Polymers

  • Transparency: Transparent
  • Reactivity: Low Reactive
  • Viscosity: 7000–10000 mPa·s
  • Application: Household Decoration, DIY
Silyl Modified Polymer

Silyl Modified Polymer – High Strength

  • Type: Medium Reactive
  • Strength: High Tensile & Adhesion
  • Finish: Clear, Paintable
  • Standard: ISO9000 Certified
STP Transparent Polymer

STP Transparent Polymer – 30000T

  • Clarity: Transparent to Light Yellow
  • Application: Gap Filling, Waterproofing
  • Eco: Low VOC, Odorless
  • Viscosity: Medium Modulus
Modified Silicone Polymer

Modified Silicone Polymer – Low Viscosity

  • Viscosity: Low, Easy Processing
  • Use: Concrete Expansion Joints
  • Curing: Moisture-Cured
  • Benefits: Flexible, Durable
Hybrid Polymer Adhesive

Hybrid Polymer Adhesive – Economical & Odorless

  • Type: Silyl Modified Polymer
  • Features: Odorless, Economical
  • Form: Liquid, Easy to Process
  • Applications: General Adhesives
Automotive Sealant

Automotive Sealant – Clear SMP 12000DS-A

  • Grade: 12000DS-A / 120K
  • Clarity: Clear, Transparent
  • Performance: High Strength, Weather Resistant
  • Use: Automotive Assembly
Waterproofing Sealant

Waterproofing Sealant – Paintable SMP

  • Type: Silyl Modified Polymer
  • Feature: Paintable, Moisture-Cured
  • Viscosity: 7000–10000
  • Use: Walls, Ceilings, Bathrooms
View All 13 Pages of Products

Key Advantages of Our Polymers

🌍

Eco-Friendly

Low VOC, solvent-free, and non-toxic formulations that meet global environmental standards.

⚡

Fast Curing

Moisture-cured systems with rapid setup and high productivity for industrial applications.

💪

High Strength

Exceptional tensile strength, adhesion, and durability under extreme conditions.

🎨

Paintable

Compatible with most topcoats, allowing seamless integration into finished surfaces.

Latest News & Insights

High-Performance Silane Modified Polymer 12000DS

Sep 19, 2025

Silane Modified Polymer 12000DS sets a new benchmark in eco-friendly sealants. It combines waterproofing, weather resistance, chemical durability, and anti-aging properties, maintaining stability in extreme climates.

Boosting Production Efficiency

Sep 19, 2025

12000DS offers low viscosity and excellent mixing characteristics, making production more controllable and ensuring batch-to-batch consistency. Ideal for high-volume sealant manufacturers.

Ideal for High Humidity & Corrosion

Sep 19, 2025

Risun 12000DS offers exceptional water and chemical resistance, maintaining strong adhesion even in salt spray, acidic, and high-humidity environments like coastal areas and water-treatment plants.

Get in Touch

Need a quote, technical data sheet, or sample? Contact Risun Polymer today for expert support.

Contact Information

  • Company: Risun Polymer China Co., Ltd
  • Phone: 86-25-86577090
  • Email: [email protected]
  • Address: No 19 Qingjiang South Road, Nanjing City, China
  • Founded: 2011 | Employees: 250+
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