Carbamate-functionalized addition polymers and addition polymer-rubber copolymers derived therefrom
AssigneeGeneral Electric Company
InventorsWilliam P. England, Gregory J. Stoddard, James J. Scobbo, Jr.
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Abstract
Novel addition polymers and copolymers derived from carbamate-functionalized vinyl monomers, and optionally one or more conventional vinyl monomers such as acrylonitrile and/or styrene, are disclosed. When the addition polymers or copolymers are melt processed with an elastomer containing moieties reactive with amines, novel addition polymer-rubber copolymers are formed which are useful as compatibilizers and impact modifiers in plastic blends, such as AES.
Claims11
A process of preparing an addition polymer-rubber copolymer comprising melt reacting a mixture containing an elastomer having moieties reactive with amines and a carbamate-functionalized addition polymer derived from the free radical polymerization of a carbamate-functionalized vinyl monomer, and optionally, one or more conventional vinyl monomers, the melt reaction being conducted under reaction conditions such that an addition polymer-rubber copolymer is formed.
An addition polymer-rubber copolymer represented by the formula:
- ##STR8## wherein:
- Q is an elastomeric segment derived from an elastomer functionalized with moieties reactive with amines;
- X.sup.1 is a chain terminating group;
- X.sup.3 is hydrogen or a chemical linkage between N and Q;
- Z.sup.2 is a divalent unit derived from one or more free radical polymerizable vinyl comonomers;
- Z.sup.3 is a trivalent unit derived from a carbamate-functionalized divalent unit in an addition polymer by removal of the carbamate group;
- k is the number of carbamate-functionalized units and is an integer having a value of 1 or greater;
- l is the number of comonomer units and is 0 or an integer having a value of 1 or greater;
- and wherein k and l may vary independently from one structural unit to the next;
- m is the number of structural units and is an integer having a value of 1 or greater;
- and
- n is the number of addition polymer side chains bound to the elastomer and is an integer equal to 1 or greater.
Dependencies are inferred from the claim text.