Process for making comb-shaped copolymers of a macromolecular mo

Details Process for making comb-shaped copolymers of a macromolecular mo Process for making comb-shaped copolymers of a macromolecular mo

1991-01-07

1991-10-29

Foelak, Morton

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

Synthetic resins

Polymers from only ethylenic monomers or processes of...

526266, C08F21802, C08G 6308, C08G 6310

Patent

active

050617729

ABSTRACT:
A comb-shaped polymer ("comb" for brevity) of a polymerizable olefinically unsaturated monomer, preferably a vinyl, styryl, or acryloyl monomer, and a macromolecular monomer of a polylactone having an acryloyl or metharcryloyl "head" is effected at low temperature in an emulsion or suspension polymerization process. The processes are capable of producing a comb with a hydrocarbon backbone and pendant polyactone chains, which comb has a number average molecular weight of at least 10,000 without the use of a co-solvent. A comb with such high mol wt is not produced with a conventional solution polymerization process. A compatible blend is produced of a comb having a backbone incompatible with a synthetic resin, on the condition the polyactone chains are long enough to be compatible in the resin. A compatible blend of first and second resins, irrespective of whether they are compatible with each other, is also produced using a comb in which the backbone is compatible with one of the resins. Such blends also result with a synthetic resin and a comb in which the pendant chains consist of a first block which has a polylactone structure, and a second block which has a polyether structure, or vice versa.

REFERENCES:
patent: 4791199 (1988-12-01), Yu
patent: 4983689 (1991-01-01), Yu

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