Polyester compression moulding masses
    9.
    发明授权
    Polyester compression moulding masses 失效
    聚酯压模成型

    公开(公告)号:US3467619A

    公开(公告)日:1969-09-16

    申请号:US3467619D

    申请日:1964-12-23

    Applicant: BAYER AG

    CPC classification number: C08G63/54 C08K3/105 C08K3/22 C08L67/06

    Abstract: Polyester moulding masses which contain unsaturated polyesters, monomeric unsaturated compounds copolymerizable therewith, magnesium oxide, fillers and catalysts are characterized in that they contain as unsaturated polyesters, at least in part, unsaturated polyesters which have been reacted with magnesium compounds in such quantities that they contain at least 0.05% by weight of magnesium incorporated in salt-like form. The unsaturated polyesters are formed from the normal acid and alcohol components and allyl and vinyl compounds are employed as the comonomers. The magnesium compounds that are reacted with the unsaturated polyesters may be selected from magnesium oxide, magnesium hydroxide, magnesium salts of organic acids such as magnesium formate and acetate, magnesium salts of halogenated acetic acids, magnesium propionate, magnesium acetyl-acetonate, magnesium acetoacetate, magnesium carbonate, basic magnesium carbonate and magnesium alcoholate. The reaction of the magnesium compound with the unsaturated polyester is preferably carried out at 60 DEG to 190 DEG C. in an inert gas atmosphere. Conventional inhibitors, catalysts and fillers are added to the moulding masses. In the examples (1) the unsaturated polyester is formed from maleic and phthalic anhydrides, butane1,3-diol and ethylene glycol and it is then reacted with magnesium oxide, and the product dissolved in styrene and (2) the unsaturated polyester is formed from maleic and phthalic anhydrides and propylene glycol and it is then reacted with magnesium ozide and the product dissolved in styrene.

Patent Agency Ranking