Crosslinkable thermoplastic polyurethane resins containing ethyl

Details Crosslinkable thermoplastic polyurethane resins containing ethyl Crosslinkable thermoplastic polyurethane resins containing ethyl

1981-04-30

1982-12-28

Welsh, Maurice J.

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

Synthetic resins

From reactant having at least one -n=c=x group as well as...

1563309, 4284231, 4284255, C08G 1832

Patent

active

043663010

ABSTRACT:
The invention relates to the field of crosslinkable thermoplastic polyurethane resins containing ethylenic side groups.
This resin preferably results from the reaction of (a) an organic diisocyanate, (b) a saturated linear diol, (c) a diol having a molecular weight of less than 300, and (d) an unsaturated diol consisting of the acrylic or methacrylic acid ester of a trihydric alcohol, of the formula: ##STR1## in which R.sub.3 =Me or H and n is an integer between 1 and 4. 2,3-Dihydroxypropyl acrylate will preferably be used.
The polyurethane resin according to the invention can be processed in accordance with the well-known traditional processes for thermoplastics, while at the same time being capable of undergoing crosslinking, by virtue of their unsaturated side groups, to form a three-dimensional lattice.
Application to profiles and prepregs.

REFERENCES:
patent: 3509234 (1970-04-01), Burlant et al.
Aleev et al., Chem. Abstr. 72, 101171y, 1970, p. 5.

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