Abstract

Covalent network polymers that include one or more of a cure rate modifying (CRM) additive, a tack modifying additive, a flame retardant additive, a physical additive, and a viscosity modifying additive allow the viscosity, pot life, tackiness and safety of chemical mixtures and products to be tailored without sacrificing the mechanical properties or reprocessability of the final vitrimers. Use of additives also enables previously infeasible manufacturing techniques.

IPC Classes  ?

• C08L 63/00 - Compositions of epoxy resinsCompositions of derivatives of epoxy resins
• C08G 59/50 - Amines
• C08J 5/24 - Impregnating materials with prepolymers which can be polymerised in situ, e.g. manufacture of prepregs
• B29C 70/52 - Pultrusion, i.e. forming and compressing by continuously pulling through a die
• B29C 70/48 - Shaping or impregnating by compression for producing articles of definite length, i.e. discrete articles using matched moulds, e.g. for deforming sheet moulding compounds [SMC] or prepregs and impregnating the reinforcements in the closed mould, e.g. resin transfer moulding [RTM]

Abstract

Covalent network polymers that include one or more of a cure rate modifying (CRM) additive, a tack modifying additive, a flame retardant additive, a physical additive, and a viscosity modifying additive allow the viscosity, pot life, tackiness and safety of chemical mixtures and products to be tailored without sacrificing the mechanical properties or reprocessability of the final vitrimers. Use of additives also enables previously infeasible manufacturing techniques.

IPC Classes  ?

• B29C 70/28 - Shaping operations therefor
• C08G 12/06 - Amines

Abstract

Covalent network polymers that include one or more of a cure rate modifying (CRM) additive, a tack modifying additive, a flame retardant additive, a physical additive, and a viscosity modifying additive allow the viscosity, pot life, tackiness and safety of chemical mixtures and products to be tailored without sacrificing the mechanical properties or reprocessability of the final vitrimers. Use of additives also enables previously infeasible manufacturing techniques.

IPC Classes  ?

• B29C 70/28 - Shaping operations therefor
• C08G 12/06 - Amines
• C08J 5/18 - Manufacture of films or sheets
• C08L 63/00 - Compositions of epoxy resinsCompositions of derivatives of epoxy resins

Abstract

The present invention generally relates to covalent network polymers prepared from an imine-linked oligomer and an independent crosslinker comprising reactive moieties selected from the group consisting of epoxy, isocyanate, bismaleimide, sulfide, polyurethane, anhydride, polyester and combinations thereof. The covalent network polymers disclosed herein are advantageously made by anhydrous reactions, which enables the highest known glass transition temperatures to date for this class of materials. Further, the disclosed covalent network polymers can be formed in continuous processes, such as additive manufacturing processes that produce three-dimensional objects or roll-to-roll processes that produce covalent network polymer films or fully cured prepreg in various size formats.

IPC Classes  ?

• C08G 12/06 - Amines
• B29C 70/28 - Shaping operations therefor
• C08J 5/18 - Manufacture of films or sheets
• C08L 63/00 - Compositions of epoxy resinsCompositions of derivatives of epoxy resins
• C08J 3/24 - Crosslinking, e.g. vulcanising, of macromolecules
• C08L 61/20 - Condensation polymers of aldehydes or ketones with only compounds containing hydrogen attached to nitrogen

Abstract

The present invention generally relates to covalent network polymers prepared from an imine-linked oligomer and an independent crosslinker comprising reactive moieties selected from the group consisting of epoxy, isocyanate, bismaleimide, sulfide, polyurethane, anhydride, polyester and combinations thereof. The covalent network polymers disclosed herein are advantageously made by anhydrous reactions, which enables the highest known glass transition temperatures to date for this class of materials. Further, the disclosed covalent network polymers can be formed in continuous processes, such as additive manufacturing processes that produce three- dimensional objects or roll-to-roll processes that produce covalent network polymer films or fully cured prepreg in various size formats.

IPC Classes  ?

• C08G 12/06 - Amines
• C08G 12/20 - Condensation polymers of aldehydes or ketones with only compounds containing hydrogen attached to nitrogen of aldehydes with acyclic or carbocyclic compounds with urethanes or thiourethanes
• C08G 73/02 - Polyamines

Abstract

The present invention generally relates to covalent network polymers prepared from an imine-linked oligomer and an independent crosslinker comprising reactive moieties selected from the group consisting of epoxy, isocyanate, bismaleimide, sulfide, polyurethane, anhydride, polyester and combinations thereof. The covalent network polymers disclosed herein are advantageously made by anhydrous reactions, which enables the highest known glass transition temperatures to date for this class of materials. Further, the disclosed covalent network polymers can be formed in continuous processes, such as additive manufacturing processes that produce three- dimensional objects or roll-to-roll processes that produce covalent network polymer films or fully cured prepreg in various size formats.

IPC Classes  ?

• C08G 12/06 - Amines
• C08G 12/20 - Condensation polymers of aldehydes or ketones with only compounds containing hydrogen attached to nitrogen of aldehydes with acyclic or carbocyclic compounds with urethanes or thiourethanes
• C08G 73/02 - Polyamines