Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof (mechanical aspects of shaping of plastics or substances in a plastic state for the production of porous or cellular articles B29C)

Child Classifications

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• C08J 9/0004
• C08J 9/0014
• C08J 9/0061
• C08J 9/0066
• C08J 9/0085
• C08J 9/009
• C08J 9/0095
• C08J 9/02 using blowing gases generated by the reacting monomers or modifying agents during the preparation or modification of macromolecules
• C08J 9/04 using blowing gases generated by a previously added blowing agent
• C08J 9/16 Making expandable particles
• C08J 9/22 After-treatment of expandable particles; Forming foamed products
• C08J 9/24 by surface fusion and bonding of particles to form voids, e.g. sintering (of expandable particles C08J9/232)
• C08J 9/26 by elimination of a solid phase from a macromolecular composition or article, e.g. leaching out
• C08J 9/28 by elimination of a liquid phase from a macromolecular composition or article, e.g. drying of coagulum
• C08J 9/30 by mixing gases into liquid compositions or plastisols, e.g. frothing with air
• C08J 9/32 from compositions containing microballoons, e.g. syntactic foams
• C08J 9/33 Agglomerating foam fragments, e.g. waste foam
• C08J 9/34 Chemical features in the manufacture of articles consisting of a foamed macromolecular core and a macromolecular surface layer having a higher density than the core
• C08J 9/35 Composite foams, i.e. continuous macromolecular foams containing discontinuous cellular particles or fragments
• C08J 9/36 After-treatment (C08J9/22 takes precedence)