Patent classifications
C
CHEMISTRY; METALLURGY
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C08
ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
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C08G
MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
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63/00
Macromolecular compounds obtained by reactions forming a carboxylic ester link in the main chain of the macromolecule
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C08G63/02
Polyesters derived from hydroxycarboxylic acids or from polycarboxylic acids and polyhydroxy compounds
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C08G63/12
derived from polycarboxylic acids and polyhydroxy compounds
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C08G63/40
Polyesters derived from ester-forming derivatives of polycarboxylic acids or of polyhydroxy compounds, other than from esters thereof
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C08G63/42
Cyclic ethers; Cyclic carbonates; Cyclic sulfites; Cyclic orthoesters
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