Modifiers for polyesters that improve viscosity in melt
AssigneeKaneka Americas Holding, Inc.
InventorsTetsuro Yamamoto, Noah Boyd, Yoshiaki Matsuoka, Shusuke Yoshihara, Ian Winters
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Abstract
A viscosity modifier for a condensation polymer may include a chain extender comprising at least one reactive monomer and at least one vinyl monomer copolymerizable with the reactive monomer, the chain extender being present in an amount ranging from 15 to 70 wt % of the viscosity modifier; and a non-condensation carrier resin present in an amount ranging from 30 to 85 wt % of the viscosity modifier. Condensation polymer compositions, methods of forming viscosity modifiers, and methods of molding condensation polymer compositions are also provided.
Claims20
A viscosity modifier for a condensation polymer, comprising:
- a chain extender comprising a copolymer of at least one reactive monomer and at least one vinyl monomer copolymerizable with the reactive monomer, the chain extender being present in an amount ranging from 15 to 70 wt % of the viscosity modifier;
- and
- a non-condensation carrier resin present in an amount ranging from 30 to 85 wt % of the viscosity modifier,
- wherein:
- the at least one reactive monomer comprises at least one reactive group selected from the group consisting of an epoxy group, a hydroxyl group, a carboxyl group, an isocyanate group, an acid anhydride group, and an acyl chloride group, and
- the non-condensation carrier resin further comprises one or more reactive monomer which does not react with the monomer in the chain extender in an amount of less than 10 wt % of the non-condensation carrier resin.
Dependencies are inferred from the claim text.