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  <xs:element id="ce_January2023CSITOneYearWorkingCapitalTermLoanMember" abstract="true" name="January2023CSITOneYearWorkingCapitalTermLoanMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
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  <xs:element id="ce_JapanFactoringAgreementsMember" abstract="true" name="JapanFactoringAgreementsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
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  <xs:element id="ce_ChinaFactoringAgreementsMember" abstract="true" name="ChinaFactoringAgreementsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="ce_ChinaEuropeJapanAndSingaporeFactoringAgreementsMember" abstract="true" name="ChinaEuropeJapanAndSingaporeFactoringAgreementsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="ce_MasterDiscountingAgreementMember" abstract="true" name="MasterDiscountingAgreementMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="ce_AmendedRestatedReceivablePurchasingFacilityMember" abstract="true" name="AmendedRestatedReceivablePurchasingFacilityMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
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  <xs:element id="ce_March2025CNCThreeYearWorkingCapitalLoanMember" abstract="true" name="March2025CNCThreeYearWorkingCapitalLoanMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
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  <xs:element id="ce_VariousSeniorNotesMember" abstract="true" name="VariousSeniorNotesMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="ce_December2024CNCThreeYearWorkingCapitalLoanMember" abstract="true" name="December2024CNCThreeYearWorkingCapitalLoanMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="ce_December2023CNCThreeYearWorkingCapitalLoanMember" abstract="true" name="December2023CNCThreeYearWorkingCapitalLoanMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
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  <xs:element id="ce_VariableInterbankInterestRateMember" abstract="true" name="VariableInterbankInterestRateMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="ce_TermSOFRMember" abstract="true" name="TermSOFRMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
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  <xs:element id="ce_ProceedsCollectedOnAccountsReceivableSoldUnderFactoringFacilities" abstract="false" name="ProceedsCollectedOnAccountsReceivableSoldUnderFactoringFacilities" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
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  <xs:element id="ce_TransferOfFinancialAssetsTreatedAsSalesNonRecourseOrLimitedRecourseBasisAccountsReceivablePercentage" abstract="false" name="TransferOfFinancialAssetsTreatedAsSalesNonRecourseOrLimitedRecourseBasisAccountsReceivablePercentage" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="dtr-types:percentItemType"/>
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  <xs:element id="ce_DebtInstrumentDiscountPricePercentage" abstract="false" name="DebtInstrumentDiscountPricePercentage" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="dtr-types:percentItemType"/>
  <xs:element id="ce_DebtInstrumentTenderPurchasePricePer1000PrincipalAmount" abstract="false" name="DebtInstrumentTenderPurchasePricePer1000PrincipalAmount" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
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  <xs:element id="ce_ActiveSites" abstract="false" name="ActiveSites" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="ce_UsSuperfundSites" abstract="false" name="UsSuperfundSites" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="ce_OtherEnvironmentalRemediationReserves" abstract="false" name="OtherEnvironmentalRemediationReserves" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="ce_PassaicRiverNewJerseyMember" abstract="true" name="PassaicRiverNewJerseyMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="ce_NumberOfPartiesIncludedInUsepaOrder" abstract="false" name="NumberOfPartiesIncludedInUsepaOrder" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:integerItemType"/>
  <xs:element id="ce_Environmental" abstract="false" name="Environmental" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="ce_EnvironmentalLiabilityPercentage" abstract="false" name="EnvironmentalLiabilityPercentage" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="dtr-types:percentItemType"/>
  <xs:element id="ce_CommonStockDividendsDecreasePercentage" abstract="false" name="CommonStockDividendsDecreasePercentage" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:percentItemType"/>
  <xs:element id="ce_ForeignCurrencyDenominatedDebtMember" abstract="true" name="ForeignCurrencyDenominatedDebtMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="ce_JPYDenominatedBorrowingsMember" abstract="true" name="JPYDenominatedBorrowingsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="ce_GainLossOnNonDerivativeUsedInNetInvestmentHedge" abstract="false" name="GainLossOnNonDerivativeUsedInNetInvestmentHedge" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="ce_GainLossOnNonDerivativesandDerivativesUsedInNetInvestmentHedge" abstract="false" name="GainLossOnNonDerivativesandDerivativesUsedInNetInvestmentHedge" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="ce_IndemnificationAgreementsHoechstMember" abstract="true" name="IndemnificationAgreementsHoechstMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="ce_DivestitureAgreementsMember" abstract="true" name="DivestitureAgreementsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="ce_NumberOfDivestitureAgreements" abstract="false" name="NumberOfDivestitureAgreements" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="xbrli:integerItemType"/>
  <xs:element id="ce_IndemnificationFloorAmount" abstract="false" name="IndemnificationFloorAmount" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
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  <xs:element id="ce_IndemnificationPercentageExceedingCeilingAmount" abstract="false" name="IndemnificationPercentageExceedingCeilingAmount" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="dtr-types:percentItemType"/>
  <xs:element id="ce_IndemnificationPercentageOther" abstract="false" name="IndemnificationPercentageOther" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="dtr-types:percentItemType"/>
  <xs:element id="ce_IncreaseDecreaseOfAccruedCapitalExpenditures" abstract="false" name="IncreaseDecreaseOfAccruedCapitalExpenditures" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="ce_OneTimeTerminationBenefits" abstract="false" name="OneTimeTerminationBenefits" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
</xs:schema>
