Glass lamination utilizing cyclic phosphonates

Details Glass lamination utilizing cyclic phosphonates Glass lamination utilizing cyclic phosphonates

1977-06-21

1978-04-04

Powell, William A.

Stock material or miscellaneous articles

Composite

Of quartz or glass

156 99, 156327, 156326, 260 2P, 427385A, 428920, 428921, B32B 1706

Patent

active

040828972

ABSTRACT:
Alcohols preferably having a pka below that of propanol-1 are heated with certain heterocyclic phosphites to give phosphonates and certain heterocyclic phosphonites, to give phosphinates. If small amounts of alcohols are employed, the products are generally polymeric in nature whereas if larger amounts of the alcohol are employed, there is generally ring opening to the simpler monomer, or isomerization to the phosphonate or phosphinate. The products are useful as fire retardants and as adhesives for glass. Pentaerythritol phosphite can be self-polymerized by such heating to form the adhesive polymer.

REFERENCES:
patent: 2586884 (1952-02-01), Jockfontoy
patent: 3053878 (1962-09-01), Friedman et al.
patent: 3090799 (1963-05-01), Wahl et al.
patent: 3141032 (1964-07-01), Friedman
patent: 3161607 (1964-12-01), Garner
patent: 3819771 (1974-06-01), Batorewicz
patent: 3927146 (1975-12-01), Batorewicz

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