Patent classifications
C08G63/00
Controlled cure for compositions comprising acetoacetylated resins
This invention relates to a curable composition comprising: I. Component (I) comprising a resin having at least one functional group selected from the group consisting of β-ketoester and malonate functional groups; II. Component (II) comprising at least one curing agent having at least one aldehyde functional group; III. Component (III) comprising at least one amine, salts thereof, or combinations thereof; and, optionally IV. Component (IV) comprising at least one reactivity delayer; wherein said curing agent is at least one dialdehyde selected from the group consisting of 1,3-cyclohexanedicarboxaldehyde; 1,4 -cyclohexanedicarboxaldehyde; mixtures of 1,3-cyclohexanedicarboxaldehyde and 1,4-cyclohexanedicarboxaldehyde; 2,6-norbornanedicarboxaldehyde; 2,5-norbornanedicarboxaldehyde; cyclododecane-1,4,8-tricarbaldehyde; 3-(4 -formylcyclohexyl)propanal; tricyclodecane dialdehyde; o-phthalaldehyde; terephthalaldehyde; isophthalaldehyde; cyclopentane-1,3-dicarbaldehyde; cyclopenta-3,5-diene-1,3-dicarbaldehyde; glutaraldehyde; benzenedipropanal; any isomers thereof; and any mixtures thereof.
Curable acetoacetylated resin compositions and additives comprising adhesion promoters, green strength enhancers, or combinations thereof
This invention relates to a curable composition comprising: I. Component (I) comprising at least one resin having at least one functional group selected from the group consisting of β-ketoester and malonate functional groups, II. Component (II) comprising at least one curing agent having at least one aldehyde functional group, and III. Component (III) comprising at least one compound having amine functionality, salts thereof, or combinations thereof; IV. Component (IV) which is at least one additive comprising at least one adhesion promoter, at least one green strength enhancer, or combinations thereof, or wherein said at least one additive is both an adhesion promoter and a green strength enhancer.
Assembly components comprising curable compositions containing acetoacetylated resins
This invention relates to an assembly component comprising at least one substrate coated with at least one curable composition comprising: I. a first component (I) comprising a resin having at least one functional group selected from the group consisting of β-ketoester and malonate functional groups, II. a second component (II) comprising at least one curing agent having at least one aldehyde functional group, and III. a third component (III) comprising at least one compound having amine functionality, salts thereof, or combinations thereof.
Curable acetoacetylated resin compositions comprising aldehydes and certain basic catalysts
This invention relates to a curable adhesive composition comprising: I. Component (I) comprising at least one amorphous or semi-crystalline polyester or at least one polyether or combinations thereof having at least one or at least two functional groups selected from the group consisting of β-ketoester and malonate functional groups, II. Component (II) comprising at least one or at least two aldehyde functional groups or isomers thereof, and III. Component (III) comprising at least one basic catalyst, salts thereof, or combinations thereof.
Pressure sensitive flow distribution medium for VARTM
A method for manufacturing a fibre reinforced composite by means of a vacuum assisted resin transfer moulding, comprising the steps of placing a fibre material in a mould, placing a flow distribution medium onto the fibre material, and covering the fibre material (1) and the flow distribution medium with a vacuum foil for forming a closed mould cavity between the mould and the vacuum foil is described. It is characterised in using a flow distribution medium with a thickness depending on a pressure gradient over the vacuum foil.
Pressure sensitive flow distribution medium for VARTM
A method for manufacturing a fibre reinforced composite by means of a vacuum assisted resin transfer moulding, comprising the steps of placing a fibre material in a mould, placing a flow distribution medium onto the fibre material, and covering the fibre material (1) and the flow distribution medium with a vacuum foil for forming a closed mould cavity between the mould and the vacuum foil is described. It is characterised in using a flow distribution medium with a thickness depending on a pressure gradient over the vacuum foil.
Multimodal polyalkylene terephthalate
A method of forming a multimodal Polyalkylene Terephthalate (PAT) can include: providing a feed of a low molecular weight (LMW) PAT, the LMW PAT having a low average molecular weight; providing a feed of high molecular weight (HMW) PAT, the HMW PAT having a high average molecular weight, wherein the low average molecular weight is lower than the high average molecular weight; mixing the feed of LMW PAT with the feed of HMW PAT in a mixer to form a multimodal PAT; and providing the multimodal PAT as output. The multimodal PAT can include: a low average molecular weight of a low molecular weight (LMW) PAT; and a high average molecular weight of a high molecular weight (HMW) PAT mixed with the LMW PAT to form the multimodal PAT, wherein the multimodal PAT is devoid of talc.
Optimized Stent Jacket with Large Apertures
An intravascular device configured to treat an aneurysm that includes a support structure including metal struts configured to be positioned in a body lumen and defining a central fluid passage that extends axially along the support structure, and a knitted mesh cover disposed over an exterior thereof and across a radial arc and along a length of the support structure sufficient to exceed an opening of an aneurysm to be treated, and the cover includes a polymer fiber having a diameter of at least 40 nanometers to 30 microns and apertures therethrough, the apertures being sized to prevent blood from passing through the device to prevent further expansion of the aneurysm. Devices including apertures that are at least 20 microns and sized to minimize or prevent an aneurysm-filling material from exiting the aneurysm through the knitted mesh cover and support structure, and methods of stenting, are also encompassed.
Optimized Stent Jacket with Large Apertures
An intravascular device configured to treat an aneurysm that includes a support structure including metal struts configured to be positioned in a body lumen and defining a central fluid passage that extends axially along the support structure, and a knitted mesh cover disposed over an exterior thereof and across a radial arc and along a length of the support structure sufficient to exceed an opening of an aneurysm to be treated, and the cover includes a polymer fiber having a diameter of at least 40 nanometers to 30 microns and apertures therethrough, the apertures being sized to prevent blood from passing through the device to prevent further expansion of the aneurysm. Devices including apertures that are at least 20 microns and sized to minimize or prevent an aneurysm-filling material from exiting the aneurysm through the knitted mesh cover and support structure, and methods of stenting, are also encompassed.
CHEMICAL COMPOUNDS WITH PERFLUOROARYL GROUPS THAT CAN FACILITATE POST-SYNTHESIS FUNCTIONALIZATION
Techniques regarding chemical compounds comprising perfluoroaryl groups that can facilitate post-synthesis functionalization are provided. For example, one or more embodiments described herein can comprise a chemical compound. The chemical compound can comprise a molecular backbone. The chemical compound can also comprise a pendent functional group bonded to the molecular backbone. The pendent functional group can comprise a perfluoroaryl group and a methylene group.