C08L COMPOSITIONS OF MACROMOLECULAR COMPOUNDS (compositions based on polymerisable monomers C08F, C08G; artificial filaments or fibres D01F; textile treating compositions D06)
Description
C08L covers polymeric compositions and blends based on macromolecular compounds, including plastics, rubbers, and resins combined with additives, fillers, or other polymers. This subclass encompasses formulated materials ready for processing or use, such as polymer alloys, filled plastics, plasticized polymers, and composite matrices. It excludes the synthesis of individual macromolecules (covered in C08C, C08F, etc.) and focuses instead on compositions combining multiple components to achieve desired physical or chemical properties. Applications span thermoplastics, elastomers, thermosets, adhesives, coatings, and technical polymeric materials tailored for industrial or consumer applications.
Filing statistics
CPC subclass C08L recorded 510,876 patent applications worldwide between 2013 and 2023. Annual filings grew from 31,968 in 2013 to 33,282 in 2023 (+4%), peaking at 65,944 applications in 2016. The most active applicants in class C08 are LG CHEM (15,432 applications), DOW GLOBAL TECHNOLOGIES (14,214 applications) and BASF (BADISCHE ANILIN & SODA FABRIK) (11,155 applications).
Source: EPO PATSTAT, worldwide filings
61 direct subcodes
Child Classifications
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- C08L 1/00 Compositions of cellulose, modified cellulose or cellulose derivatives
- C08L 101/00 Compositions of unspecified macromolecular compounds
- C08L 11/00 Compositions of homopolymers or copolymers of chloroprene
- C08L 13/00 Compositions of rubbers containing carboxyl groups
- C08L 15/00 Compositions of rubber derivatives (C08L11/00, C08L13/00 take precedence)
- C08L 17/00 Compositions of reclaimed rubber
- C08L 19/00 Compositions of rubbers not provided for in groups C08L7/00 - C08L17/00
- C08L 21/00 Compositions of unspecified rubbers
- C08L 2201/00 Properties
- C08L 2203/00 Applications
- C08L 2205/00 Polymer mixtures characterised by other features
- C08L 2207/00 Properties characterising the ingredient of the composition
- C08L 23/00 Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers
- C08L 2308/00 Chemical blending or stepwise polymerisation process with the same catalyst
- C08L 2310/00 Masterbatches
- C08L 2312/00 Crosslinking
- C08L 2314/00 Polymer mixtures characterised by way of preparation
- C08L 25/00 Compositions of, homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by an aromatic carbocyclic ring; Compositions of derivatives of such polymers
- C08L 2555/00 Characteristics of bituminous mixtures
- C08L 2666/00 Composition of polymers characterized by a further compound in the blend, being organic macromolecular compounds, natural resins, waxes or and bituminous materials, non-macromolecular organic substances, inorganic substances or characterized by their function in the composition
Top Applicants
Top 10 applicants by patent filingsfor class C08, 2013–2023, worldwide · Source: EPO PATSTAT
- LG CHEM KR 15,432
- DOW GLOBAL TECHNOLOGIES US 14,214
- BASF (BADISCHE ANILIN & SODA FABRIK) DE 11,155
- 3M INNOVATIVE PROPERTIES COMPANY (MINNESOTA MINING AND MANUFACTURING INNOVATIVE PROPERTIES COMPANY) US 6,455
- FUJIFILM JP 6,178
- CHINESE ACADEMY OF SCIENCES 5,569
- SHIN-ETSU CHEMICAL COMPANY JP 5,506
- SINOPEC (CHINA PETROCHEMICAL CORPORATION) 5,443
- TORAY INDUSTRIES JP 4,635
- NITTO DENKO CORPORATION JP 4,620