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chemistry (374) 374
metallurgy (374) 374
compositions based thereon (314) 314
organic macromolecular compounds (314) 314
their preparation or chemical working-up (314) 314
macromolecular compounds obtained otherwise than by reactionsonly involving unsaturated carbon-to-carbon bonds (200) 200
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general tagging of cross-sectional technologies spanning over several sections of the ipc (110) 110
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after-treatment not covered by subclasses c08b, c08c, c08f,c08g (79) 79
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paper (31) 31
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layered products (29) 29
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working of substances in a plastic state, in general (28) 28
apparatus therefor (26) 26
general methods of organic chemistry (26) 26
indexing scheme associated with subclasses b29b, b29c or b29d, relating to moulding materials (24) 24
braiding (23) 23
cotton-wool (23) 23
fabrics made by such processes or apparatus, e.g. felts,non-woven fabrics (23) 23
knitting (23) 23
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making textile fabrics, e.g. from fibres or filamentarymaterial (23) 23
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adhesives (22) 22
apparatus specially adapted for the manufacture of carbonfilaments (22) 22
chemical features in the manufacture of artificial filaments,threads, fibres, bristles or ribbons (22) 22
dyes (22) 22
macromolecular compounds obtained by reactions only involvingcarbon-to-carbon unsaturated bonds (22) 22
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natural or artificial threads or fibres (22) 22
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indexing scheme associated with subclass b29c, relating to particulararticles (18) 18
chemical paint or ink removers (17) 17
coating compositions, e.g. paints, varnishes orlacquers (17) 17
correcting fluids (17) 17
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use of materials therefor (17) 17
woodstains (17) 17
after-treatment of the shaped products, e.g. repairing (14) 14
shaping of material in a plastic state, not otherwise providedfor (14) 14
shaping or joining of plastics (14) 14
mechanical methods or apparatus in the manufacture ofartificial filaments, threads, fibres, bristles orribbons (13) 13
technologies or applications for mitigation or adaptation againstclimate change (13) 13
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human necessities (11) 11
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physical or chemical processes or apparatus in general (10) 10
capacitors (9) 9
capacitors, rectifiers, detectors, switching devices orlight-sensitive devices, of the electrolytic type (9) 9
chemical or physical processes, e.g. catalysis or colloidchemistry (9) 9
coffee mills (9) 9
domestic articles or appliances (9) 9
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household or table equipment (9) 9
spice mills (9) 9
suction cleaners in general (9) 9
their relevant apparatus (9) 9
climate change mitigation technologies related to wastewatertreatment or waste management (8) 8
indexing scheme associated with sublasses of section d, relating to textiles (8) 8
indexing scheme associated with sublasses of sectiond, relating totextiles (8) 8
inorganic chemistry (8) 8
making granules or preforms (8) 8
preparation or pretreatment of the material to beshaped (8) 8
recovery of plastics or other constituents of waste materialcontaining plastics (8) 8
blasting (6) 6
engineering elements and units (6) 6
general measures for producing and maintaining effectivefunctioning of machines or installations (6) 6
heating (6) 6
joints or fittings for pipes (6) 6
lighting (6) 6
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Chinese (52) 52
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07/2018
A method for purifying a crude solvent comprising an aldehyde impurity includes adding an amine, and optionally an acid catalyst, to the crude solvent to form... 
TRANSPORTING | SEPARATION | PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL | PERFORMING OPERATIONS
Patent
Patent
12/2019
A method of manufacture of a polyetherimide composition includes contacting a substituted phthalic anhydride and an organic diamine in the presence of diphenyl... 
METALLURGY | MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONSONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS | ORGANIC MACROMOLECULAR COMPOUNDS | CHEMISTRY | THEIR PREPARATION OR CHEMICAL WORKING-UP | COMPOSITIONS BASED THEREON
Patent
01/2019
A method of manufacture of a polyetherimide composition includes contacting a substituted phthalic anhydride and an organic diamine in the presence of diphenyl... 
METALLURGY | MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONSONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS | ORGANIC MACROMOLECULAR COMPOUNDS | CHEMISTRY | THEIR PREPARATION OR CHEMICAL WORKING-UP | COMPOSITIONS BASED THEREON
Patent
11/2018
A method for producing an aromatic bisimide includes reacting a dialkali metal salt of a dihydroxy aromatic compound with an N-alkyl nitrophthalimide to form a... 
METALLURGY | ORGANIC CHEMISTRY | CHEMISTRY | HETEROCYCLIC COMPOUNDS
Patent
09/2018
A method of manufacture of a polyetherimide composition includes contacting a substituted phthalic anhydride and an organic diamine in the presence of diphenyl... 
METALLURGY | MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONSONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS | ORGANIC MACROMOLECULAR COMPOUNDS | CHEMISTRY | THEIR PREPARATION OR CHEMICAL WORKING-UP | COMPOSITIONS BASED THEREON
Patent
08/2018
A method for producing an aromatic bisimide includes reacting a dialkali metal salt of a dihydroxy aromatic compound with an N-alkyl nitrophthalimide to form a... 
METALLURGY | ORGANIC CHEMISTRY | CHEMISTRY | HETEROCYCLIC COMPOUNDS
Patent
08/2016
Methods to grow, provide and plant a young tree using a novel removable tubular container are disclosed. The container promotes the growth of a well formed... 
HUNTING | HORTICULTURE | CULTIVATION OF VEGETABLES, FLOWERS, RICE, FRUIT, VINES, HOPSOR SEAWEED | FISHING | AGRICULTURE | TRAPPING | ANIMAL HUSBANDRY | FORESTRY | HUMAN NECESSITIES | WATERING
Patent
10/2019
A method of making a polyetherimide including: setting a target range for the anhydride-amine stoichiometry in a reaction mixture; combining a solvent, a... 
METALLURGY | MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONSONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS | ORGANIC MACROMOLECULAR COMPOUNDS | CHEMISTRY | THEIR PREPARATION OR CHEMICAL WORKING-UP | COMPOSITIONS BASED THEREON
Patent
10/2019
A polyimide composition includes 1 to 99 weight percent, preferably 70 to 99 weight percent, more preferably 75 to 95 weight percent of a first polyimide; and... 
METALLURGY | ORGANIC MACROMOLECULAR COMPOUNDS | CHEMISTRY | THEIR PREPARATION OR CHEMICAL WORKING-UP | COMPOSITIONS OF MACROMOLECULAR COMPOUNDS | COMPOSITIONS BASED THEREON
Patent
08/2019
하기 화학식의 폴리이미드 올리고머로서:여기서, G는 t의 원자가를 갖는 기이고, 각각의 Q, M, D 및 V는 본 명세서에서 정의된 바와 같고, 각각의 R은 독립적으로 동일하거나 상이하고, C2가 탄화수소, C알킬렌-X 또는 C아릴렌-X이며, 여기서, -X는 -O-M,... 
GENERAL PROCESSES OF COMPOUNDING | WORKING-UP | METALLURGY | MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONSONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS | ORGANIC MACROMOLECULAR COMPOUNDS | CHEMISTRY | THEIR PREPARATION OR CHEMICAL WORKING-UP | AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F,C08G | COMPOSITIONS OF MACROMOLECULAR COMPOUNDS | COMPOSITIONS BASED THEREON
Patent
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