Copolymers of cyclic vinyl ethers and cyclic acetals

Details Copolymers of cyclic vinyl ethers and cyclic acetals Copolymers of cyclic vinyl ethers and cyclic acetals

1975-05-05

1977-02-22

Phynes, Lucille M.

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

260 25N, C08J 900

Patent

active

040091295

ABSTRACT:
Novel copolymerization products are provided by the cationic polymerization of a di-(dihydropyranyl) compound with a substituted 1,3-dioxolane or a substituted 1,3-dioxane. The copolymerization products possess improved abrasion resistance and toughness as compared with the homopolymers of the di-(dihydropyranyl) monomers. Especially useful, particularly in providing foamed polymeric materials of improved friability resistance, are the polymerization reaction products of 3,4-dihydro-2H-pyran-2-methyl(3,4-dihydro-2H-pyran-2-carboxylate) and a bis-dioxolanyl or a bis-dioxanyl carbamate.

REFERENCES:
patent: 3306877 (1967-02-01), Schott et al.
patent: 3547837 (1970-12-01), Ashikaga et al.
patent: 3663470 (1972-05-01), Nishimura et al.
patent: 3673125 (1972-06-01), Takahashi et al.
patent: 3737398 (1973-06-01), Yamaguchi

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