C08L COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
Introduced: July 1974
Classification Context
- Section:
- CHEMISTRY; METALLURGY
- Class:
- ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- Subclass:
- COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
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
IPC subclass C08L recorded 517,484 patent applications worldwide between 2013 and 2023. Annual filings grew from 39,132 in 2013 to 41,491 in 2023 (+6%), peaking at 54,694 applications in 2017. The most active applicants in class C08 are LG CHEM (14,262 applications), DOW GLOBAL TECHNOLOGIES (12,486 applications) and BASF (BADISCHE ANILIN & SODA FABRIK) (9,858 applications).
Source: EPO PATSTAT, worldwide filings
In class comparison
C08L ranks 1st of 8 subclasses with filings in C08, with 517,484 applications between 2013 and 2023, 29.9% of the class. Annual filings grew 6% from 2013 to 2023, below the class as a whole (+10%).
| Rank | Subclass | Title | Applications | Share |
|---|---|---|---|---|
| 1 | C08L | Compositions of Macromolecular Compounds | 517,484 | 29.9% |
| 2 | C08K, Use of Inorganic or Non-Macromolecular Organic Substances as Compounding Ingredients | Use of Inorganic or Non-Macromolecular Organic Substances as Compounding Ingredients | 379,183 | 21.9% |
| 3 | C08G, Macromolecular Compounds Obtained Otherwise Than by Reactions Only Involving Carbon-To-Carbon Unsaturated Bonds | Macromolecular Compounds Obtained Otherwise Than by Reactions Only Involving Carbon-To-Carbon Unsaturated Bonds | 283,424 | 16.4% |
| 4 | C08J, Working-Up; General Processes of Compounding; After-Treatment Not Covered by Subclasses , , , or | Working-Up; General Processes of Compounding; After-Treatment Not Covered by Subclasses , , , or | 263,834 | 15.3% |
| 5 | C08F, Macromolecular Compounds Obtained by Reactions Only Involving Carbon-To-Carbon Unsaturated Bonds | Macromolecular Compounds Obtained by Reactions Only Involving Carbon-To-Carbon Unsaturated Bonds | 222,013 | 12.8% |
| 6 | C08B, Polysaccharides; Derivatives Thereof | Polysaccharides; Derivatives Thereof | 45,717 | 2.6% |
| 7 | C08H, Derivatives of Natural Macromolecular Compounds | Derivatives of Natural Macromolecular Compounds | 8,757 | 0.5% |
| 8 | C08C, Treatment or Chemical Modification of Rubbers | Treatment or Chemical Modification of Rubbers | 7,557 | 0.4% |
Source: EPO PATSTAT, worldwide filings
Additional Content
Glossary
addition polymers addition polymer polymers in which unsaturated monomer molecules join together to form a polymer in which the molecular formula of the repeat unit is identical (except for the double bond) with that of the monomer. aliphatic radical aliphatic radicals means an acyclic or non-aromatic carbocyclic carbon skeleton which is considered to be terminated by every bond to: an element other than carbon; a carbon atom having a double bond to one atom other than carbon; an aromatic carbocyclic ring or a heterocyclic ring. Examples: Polymers of CH 2 =CH-O-CH 2 -CH 2 -NH-COO- CH 2 - CH 2 -OH are classified in group ; CH 2 =CH-CO-CH=CH 2 are classified in group ; CH 2 =CH-C 6 H 4 -Cl are classified in group . block polymers block polymer polymers formed by polymerisation of monomers on to a macromolecule having groups capable of inducing the formation of new polymer chains bound at one or both ends of the starting macromolecule, or by polymerisation using successively different catalyst types or successively different monomer systems without deactivating the intermediate polymer. condensation polymers condensation polymer polymers in which water or some other simple molecule is eliminated from 2 or more monomer molecules as they combine to form the polymer or crosslinks between polymer chains. copolymer copolymers usually denotes a polymer of 2 chemically distinct monomers, and sometimes denotes a terpolymer containing more than 2 types of monomer unit. graft polymers graft polymer macromolecular compounds obtained by polymerising monomers on to preformed polymers or on to inorganic materials. Such preformed polymers could be rubbers, polysaccharides, condensation polymers, homopolymers or copolymers of the addition polymer type. homopolymers homopolymer polymers resulting from the polymerisation of a single monomer or polymer with a single type of repeating unit. repeat(ing) unit repeat unit repeating unit the unit in an addition polymer which is repeated throughout the molecule; for example in polyethylene the repeat unit is: –CH 2 -CH 2 - rubber rubbers a. natural or conjugated diene rubbers; b. rubber in general.
Limiting references
Artificial filaments or fibres Treatment of textiles
Application references
Application of macromolecular compositions as pesticides or herbicides Application of macromolecular compositions as pharmaceutical compositions or cosmetics Application of macromolecular compositions as explosive compositions Application of macromolecular compositions in coating compositions Application of macromolecular compositions in adhesive compositions Application of macromolecular compositions in lubricants Detergents
Related Keywords
51 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
- C08L 17/00 Compositions of reclaimed rubber
- C08L 19/00 Compositions of rubbers not provided for in groups
- C08L 21/00 Compositions of unspecified rubbers
- 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 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 27/00 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 a halogen; Compositions of derivatives of such polymers
- C08L 29/00 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 alcohol, ether, aldehydo, ketonic, acetal, or ketal radical; Compositions of hydrolysed polymers of esters of unsaturated alcohols with saturated carboxylic acids; Compositions of derivatives of such polymers
- C08L 3/00 Compositions of starch, amylose or amylopectin or of their derivatives or degradation products
- C08L 31/00 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 acyloxy radical of a saturated carboxylic acid, of carbonic acid, or of a haloformic acid; Compositions of derivatives of such polymers
- C08L 33/00 Compositions of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and only one being terminated by only one carboxyl radical, or of salts, anhydrides, esters, amides, imides, or nitriles thereof; Compositions of derivatives of such polymers
- C08L 35/00 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 a carboxyl radical, and containing at least one other carboxyl radical in the molecule, or of salts, anhydrides, esters, amides, imides or nitriles thereof; Compositions of derivatives of such polymers
- C08L 37/00 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 a heterocyclic ring containing oxygen; Compositions of derivatives of such polymers
- C08L 39/00 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 a single or double bond to nitrogen or by a heterocyclic ring containing nitrogen; Compositions of derivatives of such polymers
- C08L 41/00 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 a bond to sulfur or by a heterocyclic ring containing sulfur; Compositions of derivatives of such polymers
- C08L 43/00 Compositions of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and containing boron, silicon, phosphorus, selenium, tellurium, or a metal; Compositions of derivatives of such polymers
Top Applicants
Top 10 applicants by patent filingsfor class C08, 2013–2023, worldwide · Source: EPO PATSTAT
- LG CHEM KR 14,262
- DOW GLOBAL TECHNOLOGIES US 12,486
- BASF (BADISCHE ANILIN & SODA FABRIK) DE 9,858
- SINOPEC (CHINA PETROCHEMICAL CORPORATION) 7,877
- CHINESE ACADEMY OF SCIENCES 6,993
- FUJIFILM JP 5,049
- 3M INNOVATIVE PROPERTIES COMPANY (MINNESOTA MINING AND MANUFACTURING INNOVATIVE PROPERTIES COMPANY) US 4,923
- SHIN-ETSU CHEMICAL COMPANY JP 4,517
- BOREALIS AT 4,213
- ARKEMA FR 4,098