Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – Mixing of two or more solid polymers; mixing of solid...
Reexamination Certificate
2005-11-04
2010-12-28
Zemel, Irina S (Department: 1796)
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
Mixing of two or more solid polymers; mixing of solid...
C525S303000, C525S322000, C525S342000, C525S455000
Reexamination Certificate
active
07858705
ABSTRACT:
A process for preparing a functionalised polyolefin is described. The process comprises the step of reacting: (i) a polyolefin, (ii) a compound containing a functional group, and (iii) a coagent compound having Formula I:in-line-formulae description="In-line Formulae" end="lead"?Xn—Y—Zm (I)in-line-formulae description="In-line Formulae" end="tail"?wherein:Y is a core moiety;Z is a moiety containing a carbon-carbon double bond or a carbon-carbon triple bond;X is a moiety different than Z and the bond between X and Y may be a single bond or a double bond;n is a whole number greater than or equal to 0;m is a whole number greater than or equal to 2; andm+n equals a number up to the valence of Y;wherein: (a) when m is 2 and n is 0, the process comprises initially reacting the polyolefin and the coagent to form a product that is then reacted with the compound containing the functional group, and (b) the compound containing a functional group is substantially inert in free radical-mediated polymerization reactions and in free radical-mediated grafting reactions. The invention also relates to a functionalized polyolefin produced by such a process. The polyolefins, particularly high molecular weight polyolefins (Mn>10,000), can be extensively modified with functional groups (e.g., thiols, epoxides, anhydrides, carboxylic acids, amines, amides, boron-containing compounds, silicon-containing compounds, cyano-containing compounds, sulfates, sulfonates, sulfites, esters, thioesters, dithioesters, ether, halides, phosphates, phosphonates, phosphines, phosphites and other compounds containing polar moieties) without altering molecular weight thereby rendering the functionalised polyolefins useful in a wide range of applications.
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Parent John Scott
Sengupta Saurav Sankar
Nassif Omar A.
Queen's University At Kingston
Zemel Irina S
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