Shin-Etsu Silicone Selection Guide

KR-4000A

Water-repellent and water-sliding additives for silicone coatings

Required Performance Water RepellencyWater Sliding Property
Features and Applications Wiping-up Application is PossibleCoating Additive
  • This product can be added to silicone coatings.
  • This product imparts water repellency and water sliding properties.
  • This product maintains anti-fouling property even after wiping-up application.

Product Information

KR-4000A can be added to silicone coating agents to impart water repellency and water-sliding properties.
The following is the data when 1% of KR-4000A is added to the silicone oligomeric coating agent KR-400.
Both water contact angle and water fall angle are greatly improved.
*This product is an additive for use with silicone coatings. Please note that this product alone does not form a cured film.

Additives for KR-400 (Silicone Based Coating Agents)

【Amount added】
KR-400 (Silicone based coating agents): KR-4000A = 100 parts : 1 part
【Test method】
Film is formed on PET with a thickness of 5 µm, dried for 24 hours, and then measured by dropping water on it.
Water droplet volume: Contact angle=2µl, Water fall angle=10µl
Item Before After
Water repellency (water contact angle)° 83 105
Water sliding properties (water fall angle)° No fall 5

(Not specified values)

Applicable solvent type Organic solvent type
Applicable resin Silicone
Solvent type Solvent-free
Usage Additive
Hardness of the coating -
Appearance Pale yellow transparent
Active ingredient (%) 100
Viscosity at 25℃ 60mm2/s
Specific gravity at 25℃ 0.97
Refractive index at 25°C 1.405
Solvent -
Standard curing conditions -
UN Number N/A
Packaging 1㎏,17㎏

(Not specified values)

Product Inquiry

KR-4000A

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Related Product List

Product Name    Type  Cure Method Solvent System Usage Film Hardness Common Name Brief Description
KC-89S Type A Room Temperature Cure Solvent-free (100% Silicone Content) Main Agent, Resin Modifier High Low degree of polymerization methyl oligomer ・Low molecular weight
・It consists of only T unit.
・It forms high hard film.
・It has been used as binders of coatings.
KR-515 Type A Room Temperature Cure Solvent-free (100% Silicone Content) Main Agent, Resin Modifier Medium Medium degree of polymerization methyl oligomer ・Higher molecular weight than KC-89S.
・It consists of only T unit.
・It has been used as binders of coatings and organic resin modifiers.
KR-500 Type A Room Temperature Cure Solvent-free (100% Silicone Content) Main Agent, Resin Modifier Medium Medium degree of polymerization methyl oligomer ・Higher molecular weight than KC-89S.
・It consists of only T unit.
・It is a standard product of methyl type.
・It has been used as binders of coatings and organic resin modifiers.
X-40-9225 Type A Room Temperature Cure Solvent-free (100% Silicone Content) Main Agent, Resin Modifier Low High degree of polymerization methyl oligomer ・Higher molecular weight than KR-500.
・It consists of only T unit.
・It has been used as binders of coatings and organic resin modifiers.
X-40-9246 Type A Room Temperature Cure Solvent-free (100% Silicone Content) Main Agent, Resin Modifier Low High degree of polymerization methyl oligomer ・D unit is introduced to impart flexibility.
・It has been used as binders of coatings and organic resin modifiers.
X-40-9250 Type A Room Temperature Cure Solvent-free (100% Silicone Content) Main Agent, Resin Modifier Low High degree of polymerization methyl oligomer ・D unit is introduced to impart flexibility.
・It has been used as binders of coatings and organic resin modifiers.
X-88-1004 Type A Room Temperature Cure Solvent-free (100% Silicone Content) Main Agent, Resin Modifier High High adhesion, high hardness oligomer ・Excellent adhesion to hard-to-bond substrates such as SUS and acrylic
・High hardness and excellent scratch resistance.
X-88-1007 Type A Room Temperature Cure Solvent-free (100% Silicone Content) Main Agent, Resin Modifier Low High adhesion, crack resistant oligomer ・Excellent adhesion to hard-to-bond substrates such as SUS and acrylic
・Excellent crack resistance and water repellency
KR-400N Type A Room Temperature Cure Solvent-free (100% Silicone Content) Main Agent, Resin Modifier High High hardness methyl oligomer ・It forms high hard coatings.
・This products is a KR-400 without the curing catalyst.
X-48-1500 Type A Room Temperature Cure Solvent-free (100% Silicone Content) Main Agent, Resin Modifier Flex resistant oligomer ・It combines high hardness and flex resistance.
・Rapid cure
X-48-1501 Type A Room Temperature Cure Solvent-free (100% Silicone Content) Main Agent, Resin Modifier High High hardness, flex resistance, heat crack resistance, impact resistance oligomer ・It forms a film with high hardness, flex resistance heat resistant crack resistance and impact resistance.
X-48-1600 Type A Room Temperature Cure Solvent-free (100% Silicone Content) Main Agent, Resin Modifier Ethoxy type, flex resistant oligomer ・It combines high hardness and flex resistance.
・It cures by deethanol reaction of ethoxy groups.
・Environmentally friendly type (because it is not a demethanol reaction)
KR-401N Type A Room Temperature Cure Solvent-free (100% Silicone Content) Main Agent, Resin Modifier Medium Flex resistance, Methyl / Phenyl type oligomer ・It forms a flexible film.
・High gloss
・This products is a KR-401N without the curing catalyst.
KR-510 Type A Room Temperature Cure Solvent-free (100% Silicone Content) Main Agent, Resin Modifier Methyl / Phenyl type oligomer for resin modificatioon ・It is a standard product of methyl / phenyl type.
・It has been mainly used as modification of heat resistance and weatherability of organic resin.
・It imparts flexibility and crack resistance to oligomer type coating agents.
KR-213 Type A Room Temperature Cure Solvent-free (100% Silicone Content) Main Agent, Resin Modifier Methyl / Phenyl type oligomer for resin modificatioon ・For resin modification
・It imparts flexibility and crack resistance.
X-40-9312 Type A Room Temperature Cure Solvent-free (100% Silicone Content) Main Agent, Resin Modifier High High hardness, flex resistant oligomer ・It has high hardness and crack resistance.
・Excellent yellowing resistance and crack resistance after light irradiation
KR-400 Type A Room Temperature Cure Solvent-free (100% Silicone Content) Main Agent High One-component cure high hard oligomer ・It is a standard product of one-component (containing catalyst) type
・It forms high hard film.
X-40-2327 Type A Room Temperature Cure Solvent-free (100% Silicone Content) Main Agent Medium One-component rapid cure oligomer ・Rapid cure
KR-401 Type A Room Temperature Cure Solvent-free (100% Silicone Content) Main Agent Medium One-component cure flex resistant oligomer ・Excellent flex resistance
・High gloss
KR-4000G Type A Room Temperature Cure Organic Solvent Main Agent Low One-component cure high gloss oligomer ・Excellent gloss
・Excellent water repellency and water sliding property.
・It exhibits antifouling properties even after wiping up applications.
X-40-2450 Type A Incurable (For Resin Modification) Solvent-free (100% Silicone Content) Resin Modifier Ionic liquid modified oligomer ・Easy to migrate to the surface when added to resin
・It provides antistatic properties with a small amount of addition.
・It has releasability.
X-40-9300 Type A Room Temperature Cure Solvent-free (100% Silicone Content) Main agent, Resin Modifier   Alkary resistant rapid cure oligomer ・Rapid curing due to extremely high reactivity of alkoxy groups
・Alkali resistance
・Water resistance
X-40-9301 Type A Room Temperature Cure Solvent-free (100% Silicone Content) Main agent, Resin Modifier   Alkary resistant oligomer ・Alkali resistance
・Water resistance
KR-517 Type AR Incurable Solvent-free (100% Silicone Content) Resin Modifier Epoxy group containing oligomer ・Alkoxy groups are methoxy groups and ethoxy groups.
・Epoxy equivalent 830g/mol
X-24-9590 Type AR Incurable Solvent-free (100% Silicone Content) Resin Modifier Epoxy group containing oligomer ・Alkoxy groups are methoxy groups.
・Epoxy equivalent 590g/mol
KR-516 Type AR Incurable Solvent-free (100% Silicone Content) Resin Modifier Epoxy group containing oligomer ・Alkoxy groups are methoxy groups.
・Organic functional groups have methyl groups in addition to epoxy groups.
・Epoxy equivalent 280g/mol
KR-518 Type AR Incurable Solvent-free (100% Silicone Content) Resin Modifier Mercapto group containing oligomer ・Alkoxy groups are methoxy groups and ethoxy groups.
・Mercapto equivalent 800g/mol
KR-519 Type AR Incurable Solvent-free (100% Silicone Content) Resin Modifier Mercapto group containing oligomer ・Alkoxy groups are methoxy groups.
・Organic functional groups have methyl groups in addition to mercapto groups.
・Mercapto equivalent 450g/mol
KR-513 Type AR Incurable Solvent-free (100% Silicone Content) Resin Modifier Acrylic group containing oligomer ・Alkoxy groups are methoxy groups.
・Acrylic equivalent 210g/mol
X-40-9296 Type AR Incurable Solvent-free (100% Silicone Content) Resin Modifier Methacrylic group containing oligomer ・Alkoxy groups are methoxy groups.
・Methacrylic equivalent 230g/mol
KR-511 Type AR Incurable Solvent-free (100% Silicone Content) Resin Modifier Vinyl group containing oligomer ・Alkoxy groups are methoxy groups.
・Vinyl equivalent 530g/mol
KR-470 Type R Heat Cure, UV cure Solvent-free (100% Silicone Content) Main Agent, Resin Modifier High Cyclic siloxane tetrafunctional oligomer containing alicyclic epoxy group ・Relatively low molecular weight and excellent compatibility with epoxy resins
・It has a cyclic siloxane back bone and shrinkage is small during curing.
X-40-2678 Type R Heat Cure, UV cure Solvent-free (100% Silicone Content) Main Agent, Resin Modifier Medium Cyclic siloxane bifunctional oligomer containing alicyclic epoxy group ・Relatively low molecular weight and excellent compatibility with epoxy resins
・It has a cyclic siloxane back bone and shrinkage is small during curing.
・Excellent crack resistance due to bifunctionality
X-40-2669 Type R Heat Cure, UV cure Solvent-free (100% Silicone Content) Main Agent, Resin Modifier Linear siloxane bifunctional oligomer containing alicyclic epoxy group ・Relatively low molecular weight and excellent compatibility with epoxy resins
・With straight-chain siloxane back bone, good leveling property and wettability
・Low viscosity and effective as a reactive diluent
X-40-2728 Type R Heat Cure, UV cure Solvent-free (100% Silicone Content) Main Agent, Resin Modifier Medium Glycidyl group containing cyclic siloxane bifunctional oligomer ・Relatively low molecular weight and excellent compatibility with epoxy resins
・ It has a cyclic siloxane back bone and shrinkage is small during curing.
・Excellent crack resistance due to bifunctionality
X-40-2761 Type R UV Cure Solvent-free (100% Silicone Content) Main Agent, Resin Modifier Acrylic group containing flex resistant oligomer ・It imparts crack resistance.
・Excellent compatibility with acrylates and various photo initiators
KR-2710 Type R Incurable Solvent-free Resin Modifier Polycarbonate flame retardant ・Polycarbonate flame retardant
・Excellent transparency
X-48-1800 Incurable Solvent-free Resin Modifier Silicone for cold blend resin modification ・Cold blend resin modifier for silane modified acrylic resin
・Improving weatherability, heat resistance, magic marker stain resistance and acid and alkali resistance
・Recommended addition amount = 10 to 50 parts per 100 resin solid content
X-48-1801 Incurable Solvent-free Resin Modifier Silicone for cold blend resin modification ・Cold blend resin modifier for isocyanate curing resin
・Improving weatherability, magic marker stain resistance
・Recommended additive amount = 3% to 20% (converted to NCO equivalent) to curing agent
X-48-5030 Type R UV Cure Solvent-free (100% Silicone Content) Main Agent High Solvent-free UV cure hard coating agent ・Excellent low viscosity, scratch resistance, and low warpage
X-48-5031 Type R UV Cure Solvent-free (100% Silicone Content) Main Agent High Solvent-free UV cure hard coating agent ・Excellent weatherability, low viscosity, scratch resistance and low warpage.
X-88-2003A Type A Room Temperature Cure Solvent-free (100% Silicone Content) Main Agent High High hard, crack resistant, anti-fouling coating agent ・It has high hardness and crack shrinkage property (Water repellency, water sliding property, magic marker stain resistance)
・One-component rapid cure type