Thermoplastic hydrogels

Details Thermoplastic hydrogels Thermoplastic hydrogels

1976-07-13

1977-12-20

Anderson, Harold D.

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

260 292N, 260 292E, 260 47CZ, 260 47C, 260 775AQ, 260 78TF, 260 783R, 2603436, 560179, 260561B, C08G 6308

Patent

active

040640868

ABSTRACT:
Thermoplastic hydrogels are prepared by making condensation polymers of spirolactones of the formula: ##STR1## with a difunctional compound capable of opening the lactone rings. The thermoplastic hydrogels can be cross-linked. In the formula the total of n and m and also of n' and m' is 2 to 5 and the R groups are H or hydrocarbyl with not over 3 R groups being hydrocarbyl. Most preferably all R groups are H and n, m, n' and m' are all 1.

REFERENCES:
patent: 3169945 (1965-02-01), Hostettler et al.
patent: 3420798 (1969-01-01), Smith et al.
patent: 3462398 (1969-08-01), Wagner et al.
patent: 3474062 (1969-10-01), Smith et al.
patent: 3515706 (1970-06-01), Minato et al.
patent: 3607841 (1971-09-01), Nakahara et al.

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