A method for making substituted orthoester monomers comprising the step of contacting diols having at least one graftable pi bond such as 1-allyloxy-2,3-propanediol, and orthocarboxylates such as trimethylorthoacetate in the absence or presence of inert solvents.
Process for preparing unsaturated, cyclic orthoesters
申请人:Ruwwe Johannes
公开号:US20060281930A1
公开(公告)日:2006-12-14
An unsaturated, cyclic orthoester is prepared by reacting an unsaturated carboxylic acid with glycidol, thereby obtaining a reaction mixture; and adding an orthoester to the reaction mixture, thereby obtaining said unsaturated, cyclic orthoester.
Polymers of ethylenically unsaturated cyclic ortho esters
申请人:GENERAL ELECTRIC COMPANY
公开号:EP0496116A1
公开(公告)日:1992-07-29
Ethylenically unsaturated cyclic ortho esters are prepared by the reaction of a hydroxy-substituted cyclic ortho ester such as 4-hydroxymethyl-2-methoxy-2-methyl-1,3-dioxolane with acryloyl chloride, methacryolyl chloride, vinylbenzyl chloride or the like. They form polymers, especially random copolymers with styrene and EPDM graft copolymers; the latter are useful in the formation of copolymer-containing compositions with polyesters, polyamides and the like. The copolymer-containing compositions have excellent physical properties and may be employed to compatibilize blends of the same polymers.
Ethylenically unsaturated cyclic ortho esters are prepared by the reaction of a hydroxy-substituted cyclic ortho ester such as 4-hydroxymethyl-2-methoxy-2-methyl-1,3-dioxolane with acryloyl chloride, methacryolyl chloride, vinylbenzyl chloride or the like. They form polymers, especially EPDM graft copolymers, which are useful in the formation of copolymer-containing compositions with polyesters, polyamides and the like. The copolymer-containing compositions have excellent physical properties and may be employed to compatibilize blends of the same polymers.
A method for forming polyphenylene ether-graft-orthoester copolymer blends comprises blending functionalized polyphenylene ethers made with graftable orthoester moieties with nucleophilic polymers. Preferably the orthoester is 4-acryloyloxymethyl-2-methoxy-2-methyl-1,3-dioxolane monomer, and the nucleophilic polymers are selected from polyesters, polyamides, or functionalized polyolefins. The preferred method for blending is by a one-step process, in which all reactions occur in one pass.