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  <xsd:element id="pol_DefinedBenefitPlanAssumptionsUsedCalculatingBenefitObligationHealthCareCostTrendRateAssumedNextFiscalYear" name="DefinedBenefitPlanAssumptionsUsedCalculatingBenefitObligationHealthCareCostTrendRateAssumedNextFiscalYear" nillable="true" substitutionGroup="xbrli:item" type="num:percentItemType" xbrli:periodType="instant" />
  <xsd:element id="pol_DefinedBenefitPlanAssumptionsUsedCalculatingNetPeriodicBenefitCostHealthCareCostTrendRateAssumedNextFiscalYear" name="DefinedBenefitPlanAssumptionsUsedCalculatingNetPeriodicBenefitCostHealthCareCostTrendRateAssumedNextFiscalYear" nillable="true" substitutionGroup="xbrli:item" type="num:percentItemType" xbrli:periodType="instant" />
  <xsd:element id="pol_DefinedBenefitPlanAssumptionsUsedCalculatingNetPeriodicBenefitCostUltimateHealthCareCostTrendRate" name="DefinedBenefitPlanAssumptionsUsedCalculatingNetPeriodicBenefitCostUltimateHealthCareCostTrendRate" nillable="true" substitutionGroup="xbrli:item" type="num:percentItemType" xbrli:periodType="instant" />
  <xsd:element id="pol_DefinedBenefitPlanAssumptionsUsedCalculatingNetPeriodicBenefitCostYearHealthCareCostTrendRateReachesUltimateTrendRate" name="DefinedBenefitPlanAssumptionsUsedCalculatingNetPeriodicBenefitCostYearHealthCareCostTrendRateReachesUltimateTrendRate" nillable="true" substitutionGroup="xbrli:item" type="xbrli:gYearItemType" xbrli:periodType="duration" />
  <xsd:element id="pol_DefinedBenefitPlanAssumptionsUsedInCalculationOfBenefitObligationUltimateHealthCareCostTrendRate" name="DefinedBenefitPlanAssumptionsUsedInCalculationOfBenefitObligationUltimateHealthCareCostTrendRate" nillable="true" substitutionGroup="xbrli:item" type="num:percentItemType" xbrli:periodType="instant" />
  <xsd:element id="pol_DefinedBenefitPlanAssumptionsUsedInCalculationOfBenefitObligationYearHealthCareCostTrendRateReachesUltimateTrendRate" name="DefinedBenefitPlanAssumptionsUsedInCalculationOfBenefitObligationYearHealthCareCostTrendRateReachesUltimateTrendRate" nillable="true" substitutionGroup="xbrli:item" type="xbrli:gYearItemType" xbrli:periodType="duration" />
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  <xsd:element abstract="true" id="pol_DefinedBenefitPlanCommonCollectiveTrustGlobalEquityMember" name="DefinedBenefitPlanCommonCollectiveTrustGlobalEquityMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="pol_DefinedBenefitPlanCommonCollectiveTrustInternationalEquityMember" name="DefinedBenefitPlanCommonCollectiveTrustInternationalEquityMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
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  <xsd:element abstract="true" id="pol_DistributionMember" name="DistributionMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element id="pol_DividendsPayableNoncurrent" name="DividendsPayableNoncurrent" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="instant" />
  <xsd:element abstract="true" id="pol_DocumentAndEntityInformationAbstract" name="DocumentAndEntityInformationAbstract" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="pol_DomesticandForeignTaxAuthorityMember" name="DomesticandForeignTaxAuthorityMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element id="pol_EffectiveIncomeTaxRateReconciliationGlobalIntangibleLowTaxedIncomePercent" name="EffectiveIncomeTaxRateReconciliationGlobalIntangibleLowTaxedIncomePercent" nillable="true" substitutionGroup="xbrli:item" type="num:percentItemType" xbrli:periodType="duration" />
  <xsd:element id="pol_EffectiveIncomeTaxRateReconciliationInvestmentsinForeignAffiliatesAmount" name="EffectiveIncomeTaxRateReconciliationInvestmentsinForeignAffiliatesAmount" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="duration" />
  <xsd:element id="pol_EffectiveIncomeTaxRateReconciliationInvestmentsinForeignAffiliatesPercent" name="EffectiveIncomeTaxRateReconciliationInvestmentsinForeignAffiliatesPercent" nillable="true" substitutionGroup="xbrli:item" type="num:percentItemType" xbrli:periodType="duration" />
  <xsd:element id="pol_EffectiveIncomeTaxRateReconciliationTaxCutsAndJobsActOf2017TransitionTaxOnAccumulatedForeignEarningsPercent" name="EffectiveIncomeTaxRateReconciliationTaxCutsAndJobsActOf2017TransitionTaxOnAccumulatedForeignEarningsPercent" nillable="true" substitutionGroup="xbrli:item" type="num:percentItemType" xbrli:periodType="duration" />
  <xsd:element id="pol_EffectiveIncomeTaxRateReconciliationUncertainTaxPositionsPercent" name="EffectiveIncomeTaxRateReconciliationUncertainTaxPositionsPercent" nillable="true" substitutionGroup="xbrli:item" type="num:percentItemType" xbrli:periodType="duration" />
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  <xsd:element id="pol_FiniteLivedIntangibleAssetsCurrencyTranslation" name="FiniteLivedIntangibleAssetsCurrencyTranslation" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="instant" />
  <xsd:element abstract="true" id="pol_FivePointTwentyFivePercentSeniorNotesDueTwoThousandAndTwentyThreeMember" name="FivePointTwentyFivePercentSeniorNotesDueTwoThousandAndTwentyThreeMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element id="pol_IncomeBeforeTaxes" name="IncomeBeforeTaxes" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="duration" />
  <xsd:element id="pol_IncreaseDecreaseInAccruedLiabilitiesAndOtherAssets" name="IncreaseDecreaseInAccruedLiabilitiesAndOtherAssets" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="duration" />
  <xsd:element id="pol_InterestPayableNoncurrent" name="InterestPayableNoncurrent" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="instant" />
  <xsd:element id="pol_LengthOfPortionOfRiver" name="LengthOfPortionOfRiver" nillable="true" substitutionGroup="xbrli:item" type="num:lengthItemType" xbrli:periodType="duration" />
  <xsd:element id="pol_LongTermDebtCurrentMaturitiesPrincipalAmount" name="LongTermDebtCurrentMaturitiesPrincipalAmount" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="instant" />
  <xsd:element id="pol_LongTermDebtExcludingCurrentMaturitiesPrincipalAmount" name="LongTermDebtExcludingCurrentMaturitiesPrincipalAmount" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="instant" />
  <xsd:element id="pol_LossContingencyNumberOfEntitiesNamedInSuit" name="LossContingencyNumberOfEntitiesNamedInSuit" nillable="true" substitutionGroup="xbrli:item" type="xbrli:integerItemType" xbrli:periodType="instant" />
  <xsd:element id="pol_LossContingencyNumberofThirdPartyCompaniesAssumingResponsibilityforDevelopmentofRIFS" name="LossContingencyNumberofThirdPartyCompaniesAssumingResponsibilityforDevelopmentofRIFS" nillable="true" substitutionGroup="xbrli:item" type="xbrli:integerItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="pol_LowerPassaicRiverMember" name="LowerPassaicRiverMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element id="pol_NumberOfCustomers" name="NumberOfCustomers" nillable="true" substitutionGroup="xbrli:item" type="xbrli:integerItemType" xbrli:periodType="duration" />
  <xsd:element id="pol_NumberOfGradesofResinsSoldbyCompanyDistribution" name="NumberOfGradesofResinsSoldbyCompanyDistribution" nillable="true" substitutionGroup="xbrli:item" type="xbrli:integerItemType" xbrli:periodType="duration" />
  <xsd:element id="pol_NumberOfPolymerSolutionsOffered" name="NumberOfPolymerSolutionsOffered" nillable="true" substitutionGroup="xbrli:item" type="xbrli:integerItemType" xbrli:periodType="duration" />
  <xsd:element id="pol_NumberOfSuppliersRepresentedbyCompanyDistribution" name="NumberOfSuppliersRepresentedbyCompanyDistribution" nillable="true" substitutionGroup="xbrli:item" type="xbrli:integerItemType" xbrli:periodType="duration" />
  <xsd:element id="pol_OtherComprehensiveIncomeLossNetInvestmentHedgeAndCashFlowHedgeGainLoss" name="OtherComprehensiveIncomeLossNetInvestmentHedgeAndCashFlowHedgeGainLoss" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="pol_PatentsTechnologyAndOtherMember" name="PatentsTechnologyAndOtherMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element id="pol_PensionandOtherPostretirementDefinedBenefitPlansNonCurrentAsset" name="PensionandOtherPostretirementDefinedBenefitPlansNonCurrentAsset" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="pol_PerformanceProductsAndSolutionsMember" name="PerformanceProductsAndSolutionsMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element id="pol_RemeasurementGainLossNetOnPensionPlans" name="RemeasurementGainLossNetOnPensionPlans" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="duration" />
  <xsd:element id="pol_RevenueContractLifePeriod" name="RevenueContractLifePeriod" nillable="true" substitutionGroup="xbrli:item" type="xbrli:durationItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="pol_RevolvingCreditFacilityDue2022Member" name="RevolvingCreditFacilityDue2022Member" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="pol_SaudiHollandiBankMember" name="SaudiHollandiBankMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element id="pol_ScheduleOfContributionToRetirementSavingsPlanTableTextBlock" name="ScheduleOfContributionToRetirementSavingsPlanTableTextBlock" nillable="true" substitutionGroup="xbrli:item" type="nonnum:textBlockItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="pol_ScheduleOfSignificantAccountingPoliciesTable" name="ScheduleOfSignificantAccountingPoliciesTable" nillable="true" substitutionGroup="xbrldt:hypercubeItem" type="xbrli:stringItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="pol_SeniorTermLoanDue2026Member" name="SeniorTermLoanDue2026Member" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element id="pol_ShareBasedCompensationArrangementByShareBasedAwardAwardVestingRightsPercentage" name="ShareBasedCompensationArrangementByShareBasedAwardAwardVestingRightsPercentage" nillable="true" substitutionGroup="xbrli:item" type="num:percentItemType" xbrli:periodType="duration" />
  <xsd:element id="pol_ShareBasedCompensationArrangementByShareBasedPaymentAwardContractualTerm" name="ShareBasedCompensationArrangementByShareBasedPaymentAwardContractualTerm" nillable="true" substitutionGroup="xbrli:item" type="xbrli:durationItemType" xbrli:periodType="duration" />
  <xsd:element id="pol_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsExercisedInPeriodTotalIntrinsicValue" name="ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsExercisedInPeriodTotalIntrinsicValue" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="duration" />
  <xsd:element id="pol_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsExercisedInPeriodWeightedAverageExercisePrice" name="ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsExercisedInPeriodWeightedAverageExercisePrice" nillable="true" substitutionGroup="xbrli:item" type="num:perShareItemType" xbrli:periodType="duration" />
  <xsd:element id="pol_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeituresEstimatedPercentage" name="ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeituresEstimatedPercentage" nillable="true" substitutionGroup="xbrli:item" type="num:percentItemType" xbrli:periodType="duration" />
  <xsd:element id="pol_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsOutstandingIncludingVestedAndNonvestedAggregateIntrinsicValue" name="ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsOutstandingIncludingVestedAndNonvestedAggregateIntrinsicValue" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="instant" />
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  <xsd:element id="pol_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedAndExercisableNumber" name="ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedAndExercisableNumber" nillable="true" substitutionGroup="xbrli:item" type="xbrli:sharesItemType" xbrli:periodType="instant" />
  <xsd:element id="pol_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedAndExercisableWeightedAverageExercisePrice" name="ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedAndExercisableWeightedAverageExercisePrice" nillable="true" substitutionGroup="xbrli:item" type="num:perShareItemType" xbrli:periodType="instant" />
  <xsd:element id="pol_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedAndExercisableWeightedAverageRemainingContractualTerm" name="ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedAndExercisableWeightedAverageRemainingContractualTerm" nillable="true" substitutionGroup="xbrli:item" type="xbrli:durationItemType" xbrli:periodType="duration" />
  <xsd:element id="pol_ShareBasedCompensationArrangementBySharebasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriodAppreciationCap" name="ShareBasedCompensationArrangementBySharebasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriodAppreciationCap" nillable="true" substitutionGroup="xbrli:item" type="num:percentItemType" xbrli:periodType="duration" />
  <xsd:element id="pol_SharebasedCompensationArrangementbySharebasedPaymentAwardWeightedAverageAwardVestingPeriod" name="SharebasedCompensationArrangementbySharebasedPaymentAwardWeightedAverageAwardVestingPeriod" nillable="true" substitutionGroup="xbrli:item" type="xbrli:durationItemType" xbrli:periodType="duration" />
  <xsd:element id="pol_SiteContingencyEnvironmentalRemediationTotalEstimatedCostOfRemedy" name="SiteContingencyEnvironmentalRemediationTotalEstimatedCostOfRemedy" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="instant" />
  <xsd:element id="pol_SiteContingencyNumberOfCompaniesReceivingNoticeOfPotentialLiability" name="SiteContingencyNumberOfCompaniesReceivingNoticeOfPotentialLiability" nillable="true" substitutionGroup="xbrli:item" type="xbrli:integerItemType" xbrli:periodType="duration" />
  <xsd:element id="pol_SiteContingencyNumberOfCompaniesReceivingNoticeOfProcessToAllocateRemedialCosts" name="SiteContingencyNumberOfCompaniesReceivingNoticeOfProcessToAllocateRemedialCosts" nillable="true" substitutionGroup="xbrli:item" type="xbrli:integerItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="pol_SpecialtyEngineeredMaterialsMember" name="SpecialtyEngineeredMaterialsMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element id="pol_TaxCutsAndJobsActOf2017IncompleteAccountingProvisionalIncomeTaxExpenseBenefit" name="TaxCutsAndJobsActOf2017IncompleteAccountingProvisionalIncomeTaxExpenseBenefit" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="duration" />
  <xsd:element id="pol_TaxCutsAndJobsActof2017IncompleteAccountingChangeInTaxRateProvisionalIncomeTaxExpenseBenefit" name="TaxCutsAndJobsActof2017IncompleteAccountingChangeInTaxRateProvisionalIncomeTaxExpenseBenefit" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="duration" />
  <xsd:element id="pol_TaxCutsAndJobsActof2017IncompleteAccountingTransitionTaxForAccumulatedForeignEarningsProvisionalIncomeTaxExpenseBenefit" name="TaxCutsAndJobsActof2017IncompleteAccountingTransitionTaxForAccumulatedForeignEarningsProvisionalIncomeTaxExpenseBenefit" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="duration" />
  <xsd:element id="pol_TaxesPayableNoncurrent" name="TaxesPayableNoncurrent" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="instant" />
  <xsd:element id="pol_UnrecognizedTaxBenefitsIncomeTaxExpenseImpactIfRecognized" name="UnrecognizedTaxBenefitsIncomeTaxExpenseImpactIfRecognized" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="duration" />
  <xsd:element id="pol_UnrecognizedTaxBenefitsOther" name="UnrecognizedTaxBenefitsOther" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="duration" />
  <xsd:element id="pol_UnrecognizedTaxBenefitsReasonablyPossibleReductionResultingFromLapseOfApplicableStatuteofLimitationsAndOutcomeOfTaxExaminations" name="UnrecognizedTaxBenefitsReasonablyPossibleReductionResultingFromLapseOfApplicableStatuteofLimitationsAndOutcomeOfTaxExaminations" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="pol_VestsRateablyOverThreeYearsMember" name="VestsRateablyOverThreeYearsMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
</xsd:schema>
