RU-6720 Aliphatic Waterborne Polyurethane Resin (Top Coat)

Aliphatic polyurethane dispersion for leather and synthetic-leather coating systems, with soft hand feel and documented abrasion, hydrolysis, scratch and yellowing resistance.

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CURRENT TDS DATA

Documented product parameters

Appearance

Transparent liquid

Solid Content

±30%

7–9

Ionicity

Not specified in current TDS

Character

Soft

Documented performance directions

Soft hand feelAging resistanceScratch resistanceYellowing resistanceAbrasion resistanceHydrolysis resistance

Applications listed in the current TDS

Synthetic leather PU/PVC coatingsLuggageFootwear upperSofa leather

This information supports material selection and technical discussion. Final suitability should be confirmed under the customer’s actual formulation, substrate, process and end-use test conditions.

PRODUCT POSITIONING

Where does it fit in an application discussion?

RU-6720 is explicitly labeled “Top Coat” in the current TDS. Its documented profile makes it a logical starting candidate for leather and PU/PVC synthetic-leather finishing systems where soft hand feel must be considered together with abrasion, scratch, hydrolysis, aging and yellowing resistance.

Storage and handling from the current TDS

The current FAST TDS states storage in sealed original packaging at 5°C–40°C for at least one year. Reseal the package after use, use opened material as soon as practical, protect the product from freezing, and mix thoroughly before use.

BEFORE SAMPLING

Information that speeds up material matching

Model selection is rarely driven by one property. Sharing the substrate, coat position, surface target and test requirements reduces unnecessary trial cycles.

SubstrateSpecify leather, PU/PVC synthetic leather, microfiber, textile or other substrate.

Coat positionClarify base, intermediate, top coat / finish, or another layer in the coating structure.

Surface targetDescribe gloss / matte target, transparency, hand feel and any visual requirements.

Performance testsProvide the required abrasion, scratch, hydrolysis, flex, cold, aging or other test standards.

Process conditionsShare coating method, drying / curing conditions and any crosslinker or additive system already in use.

Project contextInclude end use, target market / region and any customer-specific compliance requirements.

TECHNICAL FAQ

About RU-6720

Is RU-6720 intended for top-coat use?

Yes. The current TDS identifies RU-6720 as “Top Coat.”

What surface-performance directions are documented?

The TDS lists soft hand feel, aging resistance, scratch resistance, yellowing resistance, abrasion resistance and hydrolysis resistance.

Is the ionicity of RU-6720 published?

Not in the current public TDS. FAST should confirm any additional formulation data during technical discussion.

Which substrates or applications are listed?

The TDS lists various leathers, PU/PVC synthetic-leather coatings, luggage, footwear upper and sofa leather.

NEXT STEP

Validate RU-6720 against your actual project

Send the substrate, application, target performance and test standards so FAST can continue the technical discussion.

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