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Sheet-molding compound recycling

The technique is also applicable to cross-linked polyesters made from unsaturated polyesters and styrene, as in the sheet-molding compounds used in cars and boats.165 The ester linkages were broken by treatment with ethanolic potassium hydroxide or by ethanolamine. The latter was preferred, because no waste salts were formed by neutralization, as they were with the potassium hydroxide. The filler and glass fibers could be removed at this stage, if desired. The alcohol-soluble product was suitable for use in new bulk-molding compounds. A method that allows the cross-linked polyester to recycled back into the same use... [Pg.415]

See other pages where Sheet-molding compound recycling is mentioned: [Pg.232]    [Pg.693]    [Pg.232]    [Pg.328]    [Pg.232]    [Pg.534]    [Pg.416]    [Pg.128]    [Pg.265]    [Pg.463]    [Pg.463]    [Pg.465]    [Pg.468]    [Pg.471]    [Pg.500]    [Pg.610]    [Pg.144]    [Pg.408]    [Pg.144]    [Pg.330]    [Pg.144]    [Pg.88]    [Pg.1049]    [Pg.292]    [Pg.480]    [Pg.79]    [Pg.582]    [Pg.1061]    [Pg.10]   
See also in sourсe #XX -- [ Pg.500 ]



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