Rubber-Like Resin

Conventional resin materials have struggled to achieve both flexibility and durability. To address this challenge, we developed Rubber-Like Resin (RLR), a new material that combines rubber-like flexibility with excellent durability.

Related Information Is Available Here

What is Rubber-Like Resin?

It features superior elasticity and scratch resistance, while also providing vibration absorption and chemical resistance. Since it cures at room temperature, no heating furnace is required, contributing to energy savings. RLR can be applied across a wide range of applications, from electronic component coatings to building materials and automotive parts.

Toughness that won't tear even when pierced with a screwdriver

Achieves 1,000% elongation

Exceptional scratch recovery

Impact absorption comparison

You can witness its outstanding properties in actual footage, including toughness that prevents tearing even when pierced with a screwdriver, 1,000% elongation capability, natural recovery from surface scratches, and effective absorption of strong impacts.
As a groundbreaking material that achieves an unprecedented combination of toughness and flexibility—something conventional resin materials couldn't accomplish—it shows promise for applications across various industrial sectors.

Characteristics of Rubber-Like Resin

Toughness that won't tear even when pierced with a screwdriver

1,000% elongation rate and tensile strength exceeding 10MPa

Properties	Details
High elongation & high strength	Achieves a high-level balance between the seemingly contradictory properties of "flexibility and strength" Demonstrates 1,000% elongation rate and tensile strength exceeding 10MPa
Scratch resistance	Unlike hard coatings, combines both scratch resistance and flexibility Can also be formulated with self-healing properties
Vibration damping characteristics	Excellent vibration damping characteristics with potential for seismic resistance and sound insulation applications
Moisture & chemical resistance	Superior moisture and chemical resistance; In contrast to urethane, its molecular structure makes it resistant to hydrolysis.
Strong adhesion	Can be engineered with adhesive strength comparable to epoxy resins
Weather resistance	Outstanding weather resistance, maintaining high-quality appearance over extended periods

We customize our products to meet your requirements and needs. Please feel free to contact us for a consultation.

Download Materials Contact Us

Potential Applications

Coatings

Impact-absorbing covers

Scratch-resistant cover

Gaskets

Seismic protection materials

Fall protection mats

Footwear soles

Cushioning materials

Outdoor equipment

Materials It Can Replace	Details
Urethane	Urethane offers excellent flexibility and abrasion resistance, but tends to deteriorate over time due to its low heat resistance and poor chemical resistance. Rubber-Like Resin maintains urethane's flexibility and abrasion resistance while significantly improving heat resistance and chemical resistance to achieve long-term durability.
Silicone rubber	Silicone rubber provides excellent heat resistance and electrical insulation properties, but suffers from low strength. The rubber-like resin achieves both strength and elongation compared to silicone rubber.
Epoxy	Epoxy delivers excellent adhesion and mechanical strength, but is too rigid, lacks flexibility, and performs poorly against impact. Rubber-Like Resin offers the adhesion and strength comparable to epoxy while providing high flexibility and impact absorption.

Physical Properties of Rubber-Like Resin

Property Values

Item	Standard grade ET-081/R-003 ET-081/H-002	High-strength grade ET-081/R-005 ET-081/H-005	High-strength & high-elongation grade ET-081/R-004 ET-081/H-002	High-elongation grade ET-081/R-005 ET-081/H-003
Two-component mixing ratio R: Resin H: hardener	R:H=100:127	R:H=100:103	R:H=100:140	R:H=100:140
Recommended curing conditions	25℃×24hr
Tensile strength (MPa)	6	30	14	12
Elongation at break (%)	580	300	808	980
Shore hardness	D37 A87	D56	D29 A65	A42
Pot life	20～25min	5～10min	15～20min	5～10min
Tg(℃) DSC	-25	15	-24	-5
Peel adhesion strength Iron (N/25mm) 260μm	127	99	94	95
Peel adhesion strength AL/AL (N/25mm) 260μm	315	161	418	128

Impact Absorption (Rebound Resilience)

Lower values indicate less rebound force = better shock absorption
⇒Demonstrates superior shock absorption performance compared to other vibration-damping materials

Item	RLR High-elongation grade	Soft urethane	Natural rubber	Butyl rubber	Silicone rubber	Silicone gel
Rebound resilience (%)	4.5	15	55	30	40	15
Elongation (%)	1,000	600	500	600	400	170
Tensile strength (MPa)	12	0.5	12	6	5	0.2
Loss factor(tanδ) 20℃ 10Hz	0.9	1.3	0.1	0.8	0.4	1.4

[Reference] For urethane mattresses Classification by rebound resilience:

Less than 15%: Low resilience
15-49%: Regular
50% or higher: High resilience (high elasticity)

Vibration Damping (Loss factor: tanδ)

Higher values indicate better damping properties
⇒Achieves equivalent loss factor compared to other damping materials while maintaining high strength and high elongation. Also exhibits high loss factor across a wide frequency range

	RLR High-elongation grade	Soft urethane	Natural rubber	Butyl rubber	Silicone rubber	Silicone gel
Elongation(%)	1,000	600	500	600	400	170
Tensile strength(MPa)	12	0.5	12	6	5	0.2
Loss factor(tanδ) 20℃ 10Hz	0.9	1.3	0.1	0.8	0.4	1.4

Weather resistance

Maintains good appearance even after 1,500 hours in Xenon Weather-Ometer (equivalent to 5 years outdoor exposure)

Sample name	Gloss retention rate (%)	Yellowing index (ΔYI)	Color difference (ΔE)	Haze value change	Total light transmission change
Untreated polycarbonate	99	1.00	1.21	Initial:0.27 After 1,500hr:0.80 Change:0.53	Initial:88.06 After 1,500hr:88.20 Change:0.14
RLR	100	2.74	1.08	Initial:0.41 After 1,500hr:0.67 Change:0.26	Initial:88.95 After 1,500hr:88.96 Change:0.01

*The RLR data is measured being applied to untreated polycarbonate.

How to use Rubber-Like Resin

Two-component type (Resin + hardener)

Emulsion (single-component) type

Cured material shape is customizable by the customer

Rubber-Like Resin is available in both single-component and two-component formulations depending on your application needs. It can be stored at room temperature and cures at ambient temperature without requiring special equipment such as heating ovens, making it easy to handle.

Being a liquid resin, it can be molded into complex shapes. You can either pour it into molds for casting or apply it thinly as a coating. These characteristics make it suitable for various applications including component protection, reinforcement, waterproofing, and more.

Download
Materials

Rubber-Like Resin

What is Rubber-Like Resin?

Characteristics of Rubber-Like Resin

Potential Applications

Coatings

Impact-absorbing covers

Scratch-resistant cover

Gaskets

Seismic protection materials

Fall protection mats

Footwear soles

Cushioning materials

Outdoor equipment

Physical Properties of Rubber-Like Resin

Property Values

Impact Absorption (Rebound Resilience)

Vibration Damping (Loss factor: tanδ)

Weather resistance

How to use Rubber-Like Resin

Two-component type (Resin + hardener)

Emulsion (single-component) type

Cured material shape is customizable by the customer

Related information

High-Performance Resins & Rubbers Rankings

Tensile Strength Ranking of Elastic Resins & Rubbers

Elongation Ranking of Resins & Rubbers

Resin & Rubber + Shock Absorption (Loss Tangent (tan δ)) Ranking

Ranking of Rebound Resilience of Resins & Rubbers

Resin & Rubber Adhesion (T-peel Strength) Ranking

Resin & Rubber Weatherability (Aging Degradation) Ranking

Characteristics of silicone rubber

Characteristics of Polyurethane

Characteristics of urethane rubber