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K-FLEX 500

K-FLEX 500

CAS-Number:              Chemical Name:                      Weight%:
120-55-8           Diethylene glycol dibenzoate              35-<45
27138-31-4         Dipropylene glycol dibenzoate             35-<45

EC Number: 248-258-5
Linear Formula: (C6H5CO2C3H6)2O


K-Flex 500 is Dibenzoate plasticizer. 
K-Flex 500 is a blend of dipropylene glycol dibenzoate and diethylene glycol dibenzoate in a ratio of about one to one by weight. 
K-Flex 500 was created to take advantage of the excellent performance of diethylene glycol dibenzoate but with the added advantage of the better handling characteristics imparted by dipropylene glycol dibenzoate. 


K-Flex 500 is polar, high solvating plasticizer like K-Flex DP. 
K-Flex 500 possesses compatibility with polar polymers such as polyvinyl acetate. 
K-Flex 500 is a non-phthalate, general-purpose, polar plasticizer. 


K-Flex 500 is a blend of di-propylene glycol dibenzoate and diethylene glycol dibenzoate in a ratio of about one to one by weight. 
K-Flex 500 can optimize the excellent performance of K-FLEX DP with improved handling, due to K-Flex 500's low freeze point. 
K-FLEX 500 is a blend of dipropylene glycol dibenzoate and diethylene glycol dibenzoate in a ratio of about one to one by weight. 


K-Flex 500 was created to take advantage of the excellent performance of diethylene glycol dibenzoate but with the added advantage of the better handling characteristics imparted by dipropylene glycol dibenzoate. 
Like K-FLEX DP, K-Flex 500 is a polar plasticizer that is a high solvator for PVC applications. 


K-Flex 500 is also compatible with polar polymers such as polyvinyl acetate.
K-Flex 500  is  a polar plasticizer that is a high solvator for PVC applications. 
Also compatible with polar polymers such as polyvinyl acetate.
K-Flex 500 is DEG-DPG-benzoate
K-Flex 500 – DPGDB and DEGDB blend in a ratio of about one to one by weight. 


Benzoate plasticizers include dibenzoates and monobenzoates, such as diethylene glycol dibenzoate (DEGDB) and dipropylene glycol dibenzoate (DPGDB) esters that have been used in a wide variety of polymer applications, including in the vinyl industry. 
DEGDB is an excellent plasticizer, but due to its high freeze point, blends with DPGDB were also developed to capitalize on the utility and
lower cost of DEGDB. 
Several years ago a blend of DEGDB, DPGDB and triethylene glycol dibenzoate (TEGDB) was introduced as a high solvating dibenzoate blend. 


More recently, a new dibenzoate triblend was introduced as a low VOC plasticizer/coalescent for use in plastisols, adhesives, architectural paint and coatings, and polishes, among other applications. 
This triblend, comprising DEGDB, DPGDB and 1,2-propylene glycol dibenzoate (PGDB) in various ratios and sold as K-FLEX 975P, has been found to be very versatile for a variety of applications, based on its broad range of compatibilities with polymers utilized in the coatings industry (for example, in vinyl acrylic, acrylic and styrene acrylic types) and possesses good solvating properties and low volatility. 


Its performance properties compare favorably to traditional high solvating phthalate plasticizers as well as traditional benzoate ester plasticizers. 
Results set forth herein show the triblend to be a high solvating plasticizer that enhances the performance properties of 1,2-cyclohexane dicarboxylate esters, such as 1,2-cyclohexane dicarboxylic acid diisononyl ester, commercially available through a number of manufacturers.


Monobenzoate esters known to be useful as plasticizers include: isodecyl benzoate, isononyl benzoate, and 2-ethylhexyl benzoate. 
The use of 2-ethylhexyl benzoate in a blend with DEGDB and diethylene glycol monobenzoate is described. 
The use of isononyl esters of benzoic acid as film-forming agents in compositions such as emulsion paints, mortars, plasters, adhesives, and varnishes.


The K-Flex dibenzoate plasticiser product line contains a variety of high solvating dibenzoate plasticisers for PVC applications. 
K-Flex 850P and K-Flex 975P have found broad utility as fast fusers in numerous applications and have served as tools for formulators to increase fusion speed, compatibility, and performance when switching from traditional phthalates to the less compatible phthalate alternatives.
In addition, the K-Flex plasticisers impart exceptional stain and extraction resistance, especially versus oily solvents. 
As little as 15% DOTP can be offset using K-Flex 850P or K-Flex .


The plasticizer of focus is propylene glycol dibenzoate (K-FLEX PG). 
When blended with two traditional dibenzoates, it is part of a product called K-FLEX 975P, diethyl phthalate plasticizer.
Diethyl phthalate (C12H14O4), or DEP is a diethyl ester of phthalic acid. 
DEP is used as a plasticizer in consumer goods, including plastic packaging films, cosmetics, solvent for fragrances, a surface lubricant in food and pharmaceutical packaging, and in tubing used for medical purposes.


K-FLEX plasticizers optimize manufacturing processes and the properties of end-products. 
They are highly compatible with polar polymers in water-based adhesive systems and they improve the film formation of paints and coatings. 
In PVC production, the fast-gelling dibenzoates can speed up processes, helping formulators achieve greater efficiency.
K-FLEX plasticizers have become standard plasticizers for adhesive products. 
They improve the processability of many polar polymers used in water-based latex and hot-melt adhesives. 


They further lower the glass transition temperature of the binder and thus enhance its adhesiveness.
K-FLEX plasticizers are mainly used in protective coatings such as underbody protection and seam sealers. 
They are more effective at gelling PVC than common standard plasticizers. 
As a result, they allow shorter cycle times or lower processing temperatures, making production more efficient.
In paints and coatings, K-FLEX dibenzoates are excellent at increasing film-formation, even at lower temperatures. 


This means that polymers become solid at a certain temperature and no longer flow together, which impairs film-formation. 
Plasticizers ensure that this temperature, the so-called minimum film formation temperature, can be reduced. 
Thus, these products can even be processed at room temperature. 


K-FLEX dibenzoates are the go-to alternative to volatile solvents.
The K-FLEX line of low-volatile coalescing agents is highly compatible with the typical polymeric binders used in these applications, such as acrylates, vinyl and styrene acrylates, polyvinyl acetate and ethylene vinyl acetate. 
K-FLEX coalescing agents help produce paints and coatings with a superior surface appearance and high durability. 
In order to create a paper surface that could be used in packaging, for example, additives are needed. 


They enhance the coating process and improve the resulting products. 
K-FLEX products for coating paper and cardboard are safe for use in packaging with food contact.
K-FLEX products provide optimum performance in sealants and joint compounds. 
This includes articles based on polyacrylates, polyvinyl acetate, their copolymers and silane-terminated sealants. 


For reactive polyurethane applications, low hydroxyl dibenzoates have been developed to ensure consistency in the production of shelf-stable sealants. 
In polysulfide sealants, the dibenzoates serve as an alternative to phthalates, which have been used up to now.
K-FLEX dibenzoates are known for their excellent gelling properties in a wide range of polymers, including PVC. 
As additional plasticizers, they can supplement moderately-gelling standard plasticizers. 


In both cases, this results in lower processing temperatures and/or shorter processing times. 
The flexible PVC products produced show better stain resistance and create high wear-proof surfaces. 
Typical applications are floor and wall coverings, artificial leather and gloves.
Nail care and depilatory waxes are just some of the personal care products that our additives are used for. 
Personal care is one field where our products with a low ecological footprint are truly appreciated.


K-FLEX plasticizers are an excellent phthalate-free solution for formulators looking to satisfy both legislative requirements and consumer demand. 
K-FLEX plasticizers offer equal or superior performance over other recognized plasticizers and coalescents in a wide range of applications including adhesives, caulks, sealants, coatings, and vinyl/plastisol applications


USES and APPLICATIONS of K-FLEX 500:
-Adhesives: Hot-melt Adhesives
-Adhesives: Water-based Latex Adhesives
-Paints & Coatings: Exterior Latex Paint


-Paints & Coatings: Industrial Coatings
-Paints & Coatings: Interior Latex Paint
-Paints & Coatings: Lacquers – Nitrocellulosic & Acrylic


-Vinyl: Plastisol Flooring
-K-Flex 500 is used for PVC applications. 
-K-Flex 500 can also be used for plastisols, as an excellent solvator for use in such applications as resilient flooring.


-K-Flex 500 shows excellent compatibility in waterborne adhesives, and reactive sealants, including acrylic, VAE, PVAc, STPE, and STPU type chemistries. 
-K-Flex 500 is suitable for food contact- and pressure-sensitive adhesives. 
-K-Flex 500 provides good flexibility, viscosity response and adhesion (even to challenging substrates), extended open times and reduced set times. 


-K-Flex 500 is designed for use in plastisols, as an excellent solvator for use in such applications as resilient flooring. 
-K-Flex 500 is recommended for latex adhesives, caulks and sealants. 
-K-Flex 500 offers improved wet tack and enhanced weatherability. 
-K-Flex 500 is an excellent choice for use in hot melt adhesives. 
K-Flex 500 is listed in FDA 21 CFR 175.105- adhesives.


-K-Flex 500 is a dibenzoate plasticizer that optimizes the excellent performance of K-FLEX DP with improved handling, due to its low temperature flexibility. 
-K-Flex 500 is a very cost-efficient plasticizer that brings value to applications such as waterborne adhesives, hot melt adhesives, and latex caulks.


-As a high solvating plasticizer, K-Flex 500 offers excellent compatibility with polymers such as PVC or polyvinyl acetate, resulting in an impressive balance of performance and economy.
-K-Flex 500 is a low-VOC, dibenzoate coalescent designed expressly for the coatings industry, with ultra-low VOC content to help coatings formulators meet the most stringent VOC regulations. 


-K-Flex 500 optimizes the excellent performance of K-FLEX DP with improved handling, due to K-Flex 500's low temperature flexibility. 
-K-Flex 500 is highly recommended for nitrocellulosic and acrylic lacquers, and K-Flex 500 is also effective in latex paints and industrial coatings. 
-K-Flex 500 is a dibenzoate plasticizer that optimizes the excellent performance of K-FLEX DP with improved handling, due to K-Flex 500's low temperature flexibility. 


-K-Flex 500 is a very cost-efficient plasticizer that brings value to applications such as waterborne adhesives, hot melt adhesives, and latex caulks.
 -As a high solvating plasticizer, K-Flex 500 offers excellent compatibility with polymers such as PVC or polyvinyl acetate, resulting in an impressive balance of performance and economy.


-K-Flex 500 is used Spreadable adhesive for vapor barrier insulation. 
-Adhesive material developed for any brand of elastomer insulation boards and closed-cell insulation of pipes. 
-K-Flex 500 is a perfect solution for gluing polyfoam and polyethylene materials. 
-K-Flex 500's field of application is primarily cooling and heating systems, K-Flex 500 is also excellent for gluing synthetic rubber and polyethylene materials to each other and to other surfaces. 


-K-Flex 500 is used Solvent-based adhesive. 
-Typically, there is no need to dilute the adhesive, the thinner is recommended for degreasing and cleaning the surface to be glued.
-K-Flex 500 is a classic blend of traditional dibenzoate plasticizers. 
-K-Flex 500 is excellent choice for use in waterborne adhesives, hot melt adhesives, and latex caulks.


-K-Flex 500 is used A polar plasticizer that is a high solvator for PVC applications. 
-K-Flex 500 is used also compatible with polar polymers such as polyvinyl acetate.
-Highly solvated one-component polyurethane system, K-FLEX 500.


-K-FLEX produces flexible elastomeric foam, polyethylene and mineral wool insulating pipes and sheets.
Self-adhesive versions are also available.
A variety of product types, from tubing to flat sheeting, is available with specific technical characteristics for individual applications. 
Whenever applied outdoors K-FLEX products must be covered or clad for UV and wheater protection (e.g. Aluminum, steel, K-FLEX AL CLAD, K-FLEX IC CLAD or K-FLEX IN CLAD)
Where the tubing has to be cut for applications purposes, its thermal insulating characteristics are maintained using the proper K-FLEX glue.
With large diameter pipes or conduits, insulation is carried out using elastomeric sheets cut to size.


-K-FLEX recommends that fitting has to be carried out to the highest possible standards to optimise the insulation effectiveness
-K-FLEX ADHESIVES:
K-FLEX provides different types of adhesive: 
K-414 for the most common civil application K-420 recomended for high performance insulation in both civil and oil&gas project K-425 recomended for high temperature insulation with SOLAR HT insulation product.


-K-FLEX THINNER:
It is recommended that surfaces to be insulated should first be cleaned with K-FLEX thinner, which is suitable for use with K-FLEX glue. 
The glue will adhere perfectly to surfaces cleaned with the proprietory thinner. 
K-FLEX thinner can also be used to clean tools (brush, spatula, etc.).


-K-FLEX FINISH:
K-FLEX finish is an acrylic paint that can be diluted in water to protect insulation both indoors and outdoors. 
The paint is environmentally safe and odorless, making it particularly suitable for use in confined spaces. 
It gives a professional, durable finish. 
It dries rapidly, and provides excellent coverage. 
When used as a primer, subsequent layers of white paint retain their color even in dark surroundings. 
Colors are fade resistant. 


-K90 ELBOWS and “TEES”:
A useful accessories pre-cut in the thickness and diameter required.
-K-FLEX INSULATED PIPE SUPPORTS:
Specifically designed to ensure that thickness of the insulating material is absolutely correct, especially in the fixing points.


-K-FLEX ADHESIVE INSULATING TAPE:
Special, 3mm thick, selfadhesive, 5 cm wide insulating tape for covering gaps or sealing insulated sections.
-K-FLEX GLUE DISPENSER: 
It facilitates the glueing of the surface avoiding the continuous dipping of the brush in the can. 
The controlled flow of the adhesive allows proper and regular quantity on the surface to glue.


PHYSICAL and CHEMICAL PROPERTIES of K-FLEX 500:
Boiling Point (5 mm Hg,°C): 191
Color (APHA): 50
Density, ASTM D1475, 25°C g/ml: 1.15
Density, ASTM D1475 ,25°C lbs/gal: 9.6
Flash Point, ASTM D92, °C: 210
Freeze Point, °C: 6
Glass Point, by DSC, °C: -54
Moisture Content, %: 0.02
Refractive Index, 25°C: 1.5306


Solubility, in water, %: 0.07
Solubility Parameter, Small’s Hildebrands: 9.7
Specific Gravity, 25/25°C: 1.14
Surface Tension, ASTM D1331, 25°C, dynes/cm: 44.4
Vapor Pressure, 25°C (extrapolated), mmHg: 2.58×10-5
Viscosity, Brookfield RVT, 20 RPMs at 25°C, cps and mPa.S: 80
Viscosity, Kinematic, 25°C, cSt: 70
VOC, ASTM D2369, %: 2.9


Molecular Weight: 342.4    
XLogP3-AA: 4    
Hydrogen Bond Donor Count: 0    
Hydrogen Bond Acceptor Count: 5
Rotatable Bond Count: 10    
Exact Mass: 342.14672380    
Monoisotopic Mass: 342.14672380    
Topological Polar Surface Area: 61.8 Ų    
Heavy Atom Count: 25


Formal Charge: 0    
Complexity: 372    
Isotope Atom Count: 0    
Defined Atom Stereocenter Count: 0    
Undefined Atom Stereocenter Count: 2    
Defined Bond Stereocenter Count: 0    
Undefined Bond Stereocenter Count: 0    
Covalently-Bonded Unit Count: 1    
Compound Is Canonicalized: Yes


Form: Liquid pH: Not Available
Appearance: Colorless to light yellow 
Relative density: 1.14
Odor: Slight aromatic 
Partition coefficient (noctanol/water): >3 - <4
Odor threshold: Not Available 
% Volatile by weight: 2.9%
Solubility in water: Negligible 
VOC: 2.9% ASTM D2369
Evaporation rate: <1 


Boiling point °C: 191°C @ 5 mm Hg
Vapor pressure: <0.1 mm Hg @ 25°C 
Boiling point °F: 376°F @ 5 mm Hg
Vapor density: 11.3 (Air=1) 
Flash point: 210 °C (410 °F) ASTM D-92
Viscosity: 70 cSt @ 25°C; 25 cSt @ 40°C 
Auto-ignition temperature: Not Available
Melting point/Freezing point: 6°C (43°F) 


Flammability (solid, gas): Not Applicable (liquid)
Oxidizing properties: Not oxidizing 
Flammability or explosive limits: LFL/LEL: Not Available
Explosive properties: Not explosive 
UFL/UEL Not Available
Decomposition temperature: Not Available 
Surface tension: 44.4 dynes/cm @ 25°C (ASTM D1331)
Other information: Amounts specified are typical and do not represent a specification


Physical state: viscous liquid
Color: colorless
Odor: No data available
Melting point/freezing point: No data available
Initial boiling point and boiling range: 232 °C at 7 hPa - lit.
Flammability (solid, gas): No data available
Upper/lower flammability or explosive limits: No data available 
Flash point: 192 °C - closed cup - ASTM D 93


Autoignition temperature: > 400 °C at 1013 hPa
Decomposition temperature: > 270 °C
pH: No data available
Viscosity 
Viscosity, kinematic: No data available
Viscosity, dynamic: No data available
Water solubility: ca.0,00869 g/l at 20 °C - OECD Test Guideline 105- slightly soluble
Partition coefficient: n-octanol/water: log Pow: 3,9 at 20 °C


Vapor pressure: No data available
Density: 1,12 g/cm3 at 25 °C - lit.
Relative density: No data available
Relative vapor density: No data available
Particle characteristics: No data available
Explosive properties: Not explosive
Oxidizing properties: No data available
Other safety information: Surface tension 59 mN/m at 20 °C


FIRST AID MEASURES of K-FLEX 500:
-Description of first aid measures: 
*Eye contact: 
Any material that contacts the eye should be washed out immediately with water. 
Get medical attention if symptoms occur. 

*Skin contact: 
Wash the affected area thoroughly with plenty of soap and water. 
Get medical attention if symptoms occur. 

*Inhalation: 
If affected, remove to fresh air. 
Get medical attention if symptoms occur. 

*Ingestion: 
Do not induce vomiting. 
Rinse out the mouth with water. 
Get medical attention immediately. 

*Protection of first aid responders: 
Wear proper personal protective clothing and equipment. 

-Indication of any immediate medical attention and special treatment needed: 
Treat symptomatically. 


ACCIDENTAL RELEASE MEASURES of K-FLEX 500:
-Environmental precautions: 
Do not flush liquid into public sewer, water systems or surface waters. 

-Methods and material for containment and cleaning up: 
Wear proper personal protective clothing and  equipment. 
Absorb spill with an inert material. 
Change contaminated clothing and launder before reuse.

FIRE FIGHTING MEASURES of K-FLEX 500:
-Extinguishing media: 
*Suitable: 
Use water spray, ABC dry chemical, foam or carbon dioxide. 
Water or foam may cause frothing. 
Use water to keep  fire-exposed containers cool. 
Water spray may be used to flush spills away from exposures. 

*Unsuitable: 
None known. 


EXPOSURE CONTROLS/PERSONAL PROTECTION of K-FLEX 500:
-Exposure controls: 
--Individual protection measures, such as personal protective equipment: 
*Eye/face protection: 
Wear eye protection. 

*Skin and body protection: 
Use good laboratory/workplace procedures including personal protective clothing: 
labcoat, safety glasses and protective gloves. 

*Respiratory protection: 
Respiratory protection is not needed with proper ventilation. 

*Further information: 
Eyewash fountains and safety showers are recommended in the work area.


HANDLING and STORAGE of K-FLEX 500:
-Precautions for safe handling: 
As with any chemical product, use good laboratory/workplace procedures. 
Wash thoroughly after handling this product. 
Always wash up before eating, smoking or using the facilities. 
Wash contaminated clothing before reuse.


-Conditions for safe storage, including any incompatibilities: 
Store cool and dry, under well-ventilated conditions. 
Do not store in open, unlabeled or mislabeled containers. 
Keep container closed when not in use. 
Do not reuse empty container without commercial cleaning or reconditioning. 


STABILITY and REACTIVITY of K-FLEX 500:
-Reactivity: 
None known.

-Chemical stability: 
This product is stable. 

-Possibility of hazardous reactions: 
Hazardous polymerization will not occur.

SYNONYMS:
Oxydipropyl dibenzoate
UNII-9QQI0RSO3H
1,1'-Oxybis-2-propanol dibenzoate
9QQI0RSO3H
Oxybis(propane-1,2-diyl) dibenzoate
DSSTox_CID_7921
DSSTox_RID_78611
DSSTox_GSID_27921
1-(2-benzoyloxypropoxy)propan-2-yl benzoate
SCHEMBL1255193
CHEMBL1877406
DTXSID6027921
1,1'-Oxybis(2-propanol)dibenzoate
Tox21_202280
Tox21_300147
NCGC00164208-01
NCGC00247908-01
NCGC00254168-01
NCGC00259829-01
1,1'-oxybis(propane-2,1-diyl) dibenzoate
FT-0698140
2-Propanol,1,1'-oxybis-, dibenzoate (9CI)
Q27272899
UNII-6OA5ZDY41O component IZYUWBATGXUSIK-UHFFFAOYSA-N

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