Method of cross linking polyesters

C - Chemistry – Metallurgy – 08 – G

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C08G 63/91 (2006.01) B29C 67/24 (2006.01) C08G 63/64 (2006.01) C08G 64/18 (2006.01)

Patent

CA 2025273

08CL06759 METHOD OF BRANCHING POLYESTERS ABSTRACT OF THE DISCLOSURE Linear polyester are branched by transester- ification with resins having repeating or recurring polymer chain units of the formula: Image . (I) wherein m, n and p are each independent integers of 0 or 1; R represents hydrocarbyl: and E represents alkylene containing from 1 to 15 carbon atoms, inclusive, halogen- substituted alkylene of 1 to 15 carbon atoms, inclusive, alkylene of 1 to 15 carbon atoms, inclusive, substituted with a - COOR group where R is as previously defined, or alkylene having 1 to 15 carbon atoms substituted with a monovalent group of the formula: Image wherein X represents one of hydrogen, hydrocarbyl or Image wherein R is as defined above; provided there is at least one moiety present, containing an R group. Niles R. Rosenquist Edgar E. Bostick

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