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  <xs:element id="ppg_GlobalArchitecturalCoatingsMember" abstract="true" name="GlobalArchitecturalCoatingsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="ppg_PerformanceCoatingsMember" abstract="true" name="PerformanceCoatingsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="ppg_IndustrialCoatingsMember" abstract="true" name="IndustrialCoatingsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="ppg_UnitedStatesAndCanadaMember" abstract="true" name="UnitedStatesAndCanadaMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="ppg_InvoicesConfirmedMember" abstract="true" name="InvoicesConfirmedMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="ppg_ConfirmedInvoicesPaidMember" abstract="true" name="ConfirmedInvoicesPaidMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="ppg_CurrencyImpactMember" abstract="true" name="CurrencyImpactMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="ppg_ArchitecturalCoatingsBusinessU.S.AndCanadaMember" abstract="true" name="ArchitecturalCoatingsBusinessU.S.AndCanadaMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="ppg_DisposalGroupIncludingDiscontinuedOperationOwnershipPercentageInDisposedAsset" abstract="false" name="DisposalGroupIncludingDiscontinuedOperationOwnershipPercentageInDisposedAsset" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="xbrli:pureItemType"/>
  <xs:element id="ppg_KevinD.BraunMember" abstract="true" name="KevinD.BraunMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
</xs:schema>
