Graft polyvinyl acetals having acetal groups from etherified .om

Details Graft polyvinyl acetals having acetal groups from etherified .om Graft polyvinyl acetals having acetal groups from etherified .om

1991-10-22

1996-12-03

Resan, Stevan A.

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

Synthetic resins

Mixing of two or more solid polymers; mixing of solid...

525 56, 525 58, 525 61, 525 62, 525440, C08F28304

Patent

active

055809383

ABSTRACT:
Graft polyvinyl acetals having acetal groups from etherified .omega.-hydroxy(poly)alkoxyalkanals, processes for their preparation and their use
Polymeric acetals of polyvinyl alcohols grafted onto polyalkylene oxide graft bases or onto polyurethane graft bases, which contain acetal groups from etherified .omega.-hydroxy(poly)alkoxyalkanals of the formula (I), and processes for their preparation by acetalization of corresponding graft polyvinyl alcohols are described.
The polymeric acetals according to the invention are polymers which are plasticized internally and in general obtainable in solid form and which can be processed to films, shaped articles or coatings by thermoplastic methods without external plasticizers. Mixed acetals with other aldehydes can also be prepared and allow wide variants in the properties, inter alia the solubilities in water or in organic solvents. The polymeric acetals according to the invention can be processed or used in bulk, for example from the melt, or as organic or aqueous solutions or as aqueous dispersions.

REFERENCES:
patent: 5019624 (1991-05-01), Gutweiler et al.
patent: 5034475 (1991-07-01), Kroggel et al.

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