UV curable non-crystalline acetal terpolymers

Details UV curable non-crystalline acetal terpolymers UV curable non-crystalline acetal terpolymers

1987-09-14

1988-07-19

Phynes, Lucille M.

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

Compositions to be polymerized by wave energy wherein said...

522100, 522103, 522142, 522166, 525398, 525401, 525410, 528230, 528246, 528250, 528270, C08L 5904

Patent

active

047586087

ABSTRACT:
Ultraviolet curable terpolymers of trioxane, from at least 65 weight percent to about 75 weight percent of 1,3-dioxolane and from about 2 weight percent to about 20 weight percent of a monoethylenically unsaturated aliphatic diol formal having at least 4 carbon atoms in its main chain, e.g., 4,7-dehydro- 1,3-dioxepin, which are non-crystalline at room temperature or above are disclosed. These terpolymers, when admixed with a multifunctional crosslinking monomer, e.g., a multifunctional acrylate such as 1,6-hexanediol diacrylate, and a photosensitizer, e.g., a benzoin compound such as benzoin isobutyl ether, can be cured to an insoluble, non-tacky, rubbery state using UV radiation. The thus-cured polymeric materials form useful crosslinked films, and when cryogenically ground to a suitable small particle size can be blended with conventionally prepared crystalline oxymethylene homo-, co- and terpolymers to improve the latters' impact properties.

REFERENCES:
patent: 3215671 (1965-11-01), Melby
patent: 3519696 (1970-07-01), Cherdron et al.
patent: 3533930 (1970-10-01), Lawton et al.
patent: 3795715 (1974-03-01), Cherdron et al.
patent: 4409370 (1983-10-01), Froix et al.

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