DESMODUR CQ I

DESMODUR CQ I is a commercial grade of isophorone diisocyanate (IPDI, CAS 4098-71-9), a monomeric cycloaliphatic diisocyanate with molecular formula C12H18N2O2 used in polyurethane and polyisocyanate manufacture. Its cycloaliphatic structure makes this grade useful when developing light-stable polyurethane materials. The two isocyanate groups react with hydroxyl-functional compounds to form urethane linkages and with amines to form urea linkages.

CAS No: 4098-71-9
EC No: 223-861-6
Molecular formula: C12H18N2O2
Molecular weight: approx. 222.28 g/mol

WHAT IS DESMODUR CQ I?

DESMODUR CQ I is a commercial IPDI grade used to manufacture polyurethanes, polyisocyanates and polyurethane dispersion intermediates. Its chemical identity is isophorone diisocyanate, CAS 4098-71-9, and its reactive NCO groups provide functionality for polymer synthesis.

As a reactive building block, DESMODUR CQ I allows formulators to construct polyurethane chains rather than simply modify an existing resin through physical blending. Selection of the polyol, chain extender and reaction stoichiometry determines the resulting polymer architecture.

For polyurethane dispersions, DESMODUR CQ I provides a route to prepolymers that are subsequently chain-extended and dispersed using an appropriately designed process. Coatings, adhesives and elastomers are relevant downstream application families. Their final properties require testing of the complete formulation.

Within polyurethane chemistry, DESMODUR CQ I belongs to the cycloaliphatic monomer family. Its two NCO groups occupy different chemical environments, allowing reaction selectivity to vary with catalyst and processing conditions.

Industrial isophorone chemistry connects acetone-based feedstocks with specialty amines and diisocyanates. For details of the offered DESMODUR CQ I grade's manufacturing route and alternative-feedstock attribution, please contact Ataman Kimya.

Commercial evaluation must distinguish neat DESMODUR CQ I from oligomeric, blocked or prepolymer forms. Although each may be described as IPDI-based, their functionality, free-monomer content and processing behavior differ. Purity, NCO content, color and chloride specifications also help distinguish monomer grades.

COMMON PRODUCT & CHEMICAL NAMES OF DESMODUR CQ I:

Isophorone diisocyanate
IPDI
3-Isocyanatomethyl-3,5,5-trimethylcyclohexyl isocyanate
5-Isocyanato-1-(isocyanatomethyl)-1,3,3-trimethylcyclohexane
DESMODUR CQ I

The first and third names identify the chemical substance, while IPDI is its conventional abbreviation. The fourth entry is a systematic chemical name. DESMODUR CQ I identifies a specific commercial grade of IPDI rather than a separate chemical substance.

For that commercial grade, the manufacturer describes ISCC PLUS-certified mass-balance attribution of alternative feedstocks. Such attribution must not be presented as a directly measured renewable content in every delivered molecule. Isophorone diamine, isophorone solvent and IPDI-derived polyisocyanates are different materials and are not interchangeable with the monomer.

CAS NO, EC / EINECS NO AND CHEMICAL IDENTIFICATION OF DESMODUR CQ I

Product name: DESMODUR CQ I
Chemical abbreviation: IPDI
Chemical name: 3-Isocyanatomethyl-3,5,5-trimethylcyclohexyl isocyanate
CAS No: 4098-71-9
EC / EINECS No: 223-861-6
Molecular formula: C12H18N2O2
Molecular weight: approx. 222.28 g/mol
Chemical class: Monomeric cycloaliphatic diisocyanate
Main functions: Reactive intermediate for polyurethane and polyisocyanate manufacture

These identifiers describe DESMODUR CQ I chemical identity, not batch performance or sustainability certification. REACH registration information exists for the substance, but supply-chain coverage and the intended use require separate confirmation.

CHEMICAL STRUCTURE AND MOLECULAR PROPERTIES OF DESMODUR CQ I

The IPDI molecule contains a substituted cyclohexane ring and two isocyanate groups. One NCO group is associated with an isocyanatomethyl substituent, while the other is attached directly to the ring.

HOW DOES DESMODUR CQ I WORK AT THE MOLECULAR LEVEL?

During polyurethane formation, hydroxyl groups consume DESMODUR CQ I's NCO groups to generate urethane bonds. Reaction with amines produces urea bonds, while reaction with moisture can generate carbon dioxide and unwanted side products. Moisture contamination therefore affects both quality and pressure control.

Main functions:

Building polyurethane chains
Providing NCO functionality for prepolymer synthesis
Contributing cycloaliphatic segments to polymer structures
Serving as a precursor to polyisocyanate derivatives

Catalyst selection and reaction conditions alter the relative reactivity of the two NCO groups. Consequently, a single fixed reactivity ratio should not be assumed for all DESMODUR CQ I systems.

PHYSICAL AND CHEMICAL PROPERTIES OF DESMODUR CQ I

General technical specifications:

Physical appearance: Colorless to slightly yellow liquid
Chemical character: Reactive cycloaliphatic diisocyanate
Molecular weight: approx. 222.28 g/mol
NCO equivalent weight: approx. 111 g/equivalent
Assay by GC: Published grade specification, minimum 99.5%
NCO content calculated from GC: Published grade specification, minimum 37.5% by weight
Viscosity at 25 degrees C: typically approx. 10 mPa.s
Density at 20 degrees C: typically approx. 1.06 g/mL
Hydrolyzable chlorides: Published grade specification, maximum 160 mg/kg
Total chlorides: Published grade specification, maximum 200 mg/kg
Color value: Published grade specification, maximum 30 Hazen
Water behavior: Reactive. Not suitable for simple dissolution in water
Freezing point: approx. -60 degrees C, substance reference value
Flash point: approx. 155 degrees C, substance reference value

The assay, NCO, chloride, color, viscosity and density figures above refer to the commercial grade identified in Common Names. Published limits have been retained as limits rather than relabeled as typical measurements.

For dosing, the NCO equivalent weight expresses the mass supplying one equivalent of isocyanate functionality. Batch NCO content should be used when precise stoichiometric adjustment is required.

Viscosity influences DESMODUR CQ I transfer and metering, whereas color is relevant to appearance-sensitive resins. Chloride limits and purity provide additional purchasing controls. Reference physical constants and supplier grade specifications serve different purposes. These figures are not an independent contractual specification.

SECTORS AND INDUSTRIAL APPLICATIONS OF DESMODUR CQ I

The reactive NCO groups and cycloaliphatic structure of DESMODUR CQ I make it relevant to polyurethane production across several industrial application families.

Main areas of use:

Polyurethane resin manufacture
Waterborne polyurethane dispersions
Coating binder intermediates
Adhesive and sealant intermediates
Polyurethane elastomer development
Polyisocyanate manufacture

POLYURETHANE DISPERSIONS

Purpose: Develop polyurethane polymers suitable for a designed aqueous dispersion process.
Function of DESMODUR CQ I: Form an NCO-functional intermediate with selected polyols.
Performance effect: Enable control of polymer composition through subsequent chain extension and incorporation of hydrophilic groups.
Limitations: The monomer cannot simply be mixed into water. The complete synthesis and dispersion sequence must be designed.

COATINGS AND ADHESIVE BINDERS

Purpose: Produce reactive intermediates and polyurethane binders.
Function of DESMODUR CQ I: Introduce cycloaliphatic diisocyanate-derived segments.
Performance effect: Support development of light-stable polyurethane systems.
Limitations: Final hardness, adhesion and durability depend on the entire resin and formulation.

For IPDI-based coatings, appearance and light stability may be central evaluation criteria. Adhesive development places greater emphasis on bond performance, while dispersion manufacture also requires control of particle formation and colloidal stability.

WHICH PROBLEMS CAN DESMODUR CQ I HELP SOLVE?

Selecting a light-stable polyurethane building block
DESMODUR CQ I is relevant when light stability is a design requirement, although full weathering performance must be demonstrated experimentally.

Designing a controlled prepolymer
Different NCO environments offer a useful synthesis variable, provided catalyst and conversion are controlled.

Evaluating alternative-feedstock sourcing
The identified grade offers mass-balance attribution. Procurement claims require the appropriate certification and delivery documentation.

THINGS TO CONSIDER WHEN USING DESMODUR CQ I

A common formulation error is treating DESMODUR CQ I as a finished polyisocyanate hardener. The monomer and its derivatives require different calculations and controls.

Determine NCO/OH equivalents from measured raw-material data.
Control moisture in polyols, additives and equipment.
Assess exotherm, mixing and heat removal before scale-up.
Measure residual monomer and remaining NCO where relevant.
Validate final polymer properties instead of inferring them from the DESMODUR CQ I name.

Professional handling requires exposure controls appropriate to diisocyanates. Low odor or low visible vapor does not establish safe conditions.

INITIAL FORMULATION APPROACHES FOR DESMODUR CQ I

The following calculated compositions illustrate laboratory starting points, not validated commercial formulations or operating instructions. All percentages are by weight. Each example assumes an ideal dry difunctional polyol with hydroxyl number 56.1 mg KOH/g and a DESMODUR CQ I NCO equivalent weight of approximately 111.1 g/equivalent. Actual dosing must be recalculated from measured values.

EXAMPLE 1: POLYETHER-BASED NCO-TERMINATED PREPOLYMER SCREEN

Components:

Dry polyether diol, assumed OH number 56.1: 81.82%
DESMODUR CQ I: 18.18%
Total: 100.00%

Calculated NCO/OH ratio: approx. 2.0

Evaluation criteria:

Measured NCO content versus calculated residual NCO
Viscosity and storage stability
Residual DESMODUR CQ I monomer
Compatibility with the intended downstream reaction

Safety note: Use only in a suitably controlled professional laboratory. Excess NCO does not establish low free-monomer content.

EXAMPLE 2: POLYESTER-BASED NCO-TERMINATED PREPOLYMER SCREEN

Components:

Dry polyester diol, assumed OH number 56.1: 83.33%
DESMODUR CQ I: 16.67%
Total: 100.00%

Calculated NCO/OH ratio: approx. 1.8

Evaluation criteria:

Conversion and remaining NCO
Viscosity development
Residual monomer
Properties after a separately designed chain-extension or curing stage

Safety note: These compositions omit a processing schedule. Reaction conditions require professional development and heat-management assessment.

DESMODUR CQ I SIMILAR PRODUCTS AND ALTERNATIVES

Selection of another diisocyanate or a DESMODUR CQ I derivative changes more than the material name. Compare functionality, NCO equivalents, monomer exposure, process requirements and final polymer performance.

DESMODUR CQ I AND HEXAMETHYLENE DIISOCYANATE

HDI is an aliphatic monomer with a different backbone. Replacing DESMODUR CQ I requires reformulation and validation rather than equal-weight substitution.

DESMODUR CQ I AND HYDROGENATED MDI

H12MDI is another cycloaliphatic polyurethane building block. Its structure and equivalent weight differ from those of DESMODUR CQ I.

DESMODUR CQ I AND IPDI-DERIVED POLYISOCYANATES

Oligomeric derivatives can serve different coating-hardener requirements. A derived polyisocyanate is not the same substance as neat DESMODUR CQ I, and its free-monomer content must be established separately.

Laboratory and application trials should confirm every proposed substitution.

QUALITY CONTROL AND PURCHASING CRITERIA FOR DESMODUR CQ I

Define the intended DESMODUR CQ I application before comparing quotations.

Information to clarify and review before purchasing:

Monomer versus derivative requirement
Assay and NCO content
Viscosity, color and chloride limits
Batch identification and production or shipment date
Packaging integrity and storage history
Applicable safety documentation and transport classification
Mass-balance certification and claim scope, where requested
Required quantity, destination and delivery schedule

A COA reports batch results, a TDS describes technical characteristics, and an SDS communicates hazards and handling requirements. These documents answer different purchasing questions.

For current pricing, packaging, availability and supply documentation for DESMODUR CQ I, please contact Ataman Kimya.

An DESMODUR CQ I quotation should be evaluated against the specified grade, order quantity, packaging, certification scope and delivery terms. A price comparison is meaningful only when these supply conditions are comparable.

STORAGE AND HANDLING OF DESMODUR CQ I

Keep DESMODUR CQ I in its original sealed container, protected from moisture, heat and contamination. The identified grade carries a recommended storage temperature of 0-30 degrees C and a specification assurance period of nine months from shipment under the stated storage conditions. Material held longer requires retesting.

Moisture ingress can generate carbon dioxide and create pressure in contaminated containers. Segregate DESMODUR CQ I from water and uncontrolled contact with reactive hydroxyl- or amine-containing materials.

The reviewed monomer transport reference identifies UN 2290, class 6.1, packing group III. Confirm the actual consignment classification against the supplied product and applicable transport rules.

SAFETY INFORMATION OF DESMODUR CQ I

DESMODUR CQ I presents serious inhalation and sensitization hazards. The reviewed US monomer SDS describes fatal inhalation toxicity, severe skin burns and eye damage, allergic skin reactions, respiratory sensitization and respiratory irritation. These reference findings do not replace the exact grade's current local classification. For its jurisdiction-specific H statements, please contact Ataman Kimya.

Provide effective exposure control and select chemical-resistant gloves, protective clothing, eye protection and respiratory protection through a workplace assessment. Heated or aerosol-generating operations need particular attention. Obtain immediate medical attention after significant exposure. Move an affected person to fresh air after inhalation and irrigate exposed eyes promptly.

Prevent releases to drains and arrange controlled disposal of DESMODUR CQ I residues and contaminated packaging. Thermal decomposition may produce highly toxic gases. Emergency response belongs with trained personnel.

Under EU REACH Annex XVII Entry 74, industrial and professional use of diisocyanates at a combined concentration of 0.1% by weight or more is subject to safe-use training requirements. Successful training must be documented and renewed at least every five years. A mass-balance sourcing claim does not remove these obligations.

SUPPLY OF DESMODUR CQ I FROM ATAMAN KIMYA

For a DESMODUR CQ I sourcing inquiry, please contact Ataman Kimya to confirm the offered grade, documentation and delivery conditions. Stock availability, certification and suitability for a particular process require confirmation at quotation stage.

Sharing the following information in a quotation request helps evaluate the correct DESMODUR CQ I product:

Intended synthesis or application
Required technical specifications
Quantity and packaging preference
Destination and requested delivery date
Any mass-balance certification requirement

FREQUENTLY ASKED QUESTIONS ABOUT DESMODUR CQ I

What is DESMODUR CQ I?
DESMODUR CQ I is a commercial grade of isophorone diisocyanate used in polyurethane chemistry.

What is the CAS number?
The CAS number of DESMODUR CQ I is 4098-71-9.

What is the EC number?
DESMODUR CQ I has EC number 223-861-6.

What is its molecular formula?
The molecular formula is C12H18N2O2.

What does equivalent weight mean?
For DESMODUR CQ I, approximately 111 g supplies one equivalent of NCO functionality.

Is it a finished polyurethane resin?
No. DESMODUR CQ I is a reactive monomer used to manufacture polymers and derivatives.

Ca DESMODUR CQ I be dissolved in water?
Water reacts with DESMODUR CQ I. Direct aqueous dilution is unsuitable.

How much should be used?
Calculate the DESMODUR CQ I charge from active-hydrogen equivalents and the desired reaction stoichiometry.

Do both NCO groups react identically?
Their environments differ, and relative reactivity depends on reaction conditions.

Does alternative-feedstock attribution change chemical identity?
Mass-balance attribution does not create a different DESMODUR CQ I CAS identity.

Is DESMODUR CQ I hazardous?
Yes. Inhalation toxicity and respiratory and skin sensitization require professional controls.

What is the transport reference?
The reviewed monomer SDS lists UN 2290, class 6.1, packing group III.

Ca DESMODUR CQ I replace an oligomeric hardener directly?
No. Functionality, NCO content, free monomer and performance must be reassessed.

Which documents should be requested?
Obtain the offered grade's TDS, current local SDS, batch COA and any required attribution certificate.

How is current price obtained?
Please contact Ataman Kimya with the DESMODUR CQ I specification, quantity and destination.

DESMODUR CQ I - TECHNICAL SUMMARY

DESMODUR CQ I is a commercial grade of isophorone diisocyanate (IPDI), a difunctional cycloaliphatic monomer for polyurethane and polyisocyanate synthesis. Its two NCO groups participate in urethane and urea chemistry.

Grade selection should consider purity, NCO content, viscosity, color and chloride specifications. Alternative-feedstock attribution is a separate procurement characteristic requiring suitable documentation.

The substance is identified by CAS 4098-71-9 and EC 223-861-6. Isophorone diamine, isophorone solvent and IPDI-derived oligomers must be distinguished from this monomer.

Relevant applications include polyurethane dispersions, coating binders, adhesives and elastomer intermediates. End-use performance depends on the complete polymer and formulation.

Professional exposure control, moisture exclusion and applicable diisocyanate training are essential. Ataman Kimya can be contacted to clarify the offered DESMODUR CQ I grade and supply conditions.

DESMODUR CQ I can be sourced from ATAMAN KİMYA. For further information and supply inquiries about DESMODUR CQ I, please contact ATAMAN KİMYA.