Oligomeric chain extenders for processing, post-processing and recycling of condensation polymers, synthesis, compositions and applications
First Claim
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1. A chain-extended polymeric composition comprising:
- (a) a chain extender comprising a polymerization product of;
(i) at least one epoxy-functional (meth)acrylic monomer; and
(ii) at least one styrenic and/or (meth)acrylic monomer;
(b) at least one condensation polymer;
wherein the chain extender has an epoxy equivalent weight of from about 180 to about 2800, a number-average epoxy functionality (Efn) value of less than about 30, a weight-average epoxy functionality (Efw) value of up to about 140, and a number-average molecular weight (Mn) value of less than 6000 and wherein at least a portion of the chain extender has reacted with at least a portion of the at least one condensation polymer to produce a chain-extended condensation polymer wherein the polymeric composition is substantially free of gel particles.
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Abstract
The invention provides chain extenders made from epoxy-functional (meth)acrylic monomers and styrenic and/or (meth)acrylic monomers. The invention further provides polymeric compositions made from the chain extenders and plastic articles made from the compositions. Finally, the invention provides methods of using the chain extenders to improve the properties of virgin, recycled, and reprocessed condensation polymers.
122 Citations
38 Claims
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1. A chain-extended polymeric composition comprising:
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(a) a chain extender comprising a polymerization product of; (i) at least one epoxy-functional (meth)acrylic monomer; and (ii) at least one styrenic and/or (meth)acrylic monomer; (b) at least one condensation polymer; wherein the chain extender has an epoxy equivalent weight of from about 180 to about 2800, a number-average epoxy functionality (Efn) value of less than about 30, a weight-average epoxy functionality (Efw) value of up to about 140, and a number-average molecular weight (Mn) value of less than 6000 and wherein at least a portion of the chain extender has reacted with at least a portion of the at least one condensation polymer to produce a chain-extended condensation polymer wherein the polymeric composition is substantially free of gel particles. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17)
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18. A method for increasing the molecular weight of a condensation polymer comprising reacting a chain extender comprising a polymerization product of:
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(i) at least one epoxy-functional (meth)acrylic monomer; and (ii) at least one styrenic and/or (meth)acrylic monomer; with at least one condensation polymer wherein the chain extender has an epoxy equivalent weight of from about 180 to about 2800, a number-average epoxy functionality (Efn) value of less than about 30, a weight-average epoxy functionality (Efw) value of up to about 140, and a number-average molecular weight (Mn) value of less than 6000 and wherein condensation polymer with increased molecular weight is substantially free of gel particles. - View Dependent Claims (19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38)
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Specification