C08J3/244

Method for fabricating multiphenylethynyl-containing and lightly crosslinked polyimides capable of memorizing shapes and augmenting thermomechanical stability

The invention generally relates to shape memory films that are tri-functionally crosslinked and that comprise multiple, non-terminal, phenylethynyl moieties. In addition, the present invention relates methods of fabricating such films. Due to the improved properties of such SMPs, the SMP designer can program in to the SMP thermomechanical property enhancements that make the SMP suitable, among other things, for advanced sensors, high temperature actuators, responder matrix materials and heat responsive packaging.

Method for producing an object from a precursor, and use of a radically crosslinkable resin in an additive production method

A process for producing an object from a precursor comprises the steps of: I) depositing a free-radically crosslinked resin atop a carrier to obtain a ply of a construction material joined to the carrier which corresponds to a first selected cross section of the precursor; II) depositing a free-radically crosslinked resin atop a previously applied ply of the construction material to obtain a further ply of the construction material which corresponds to a further selected cross section of the precursor and which is joined to the previously applied ply; III) repeating step II) until the precursor is formed; IV) treating the precursor obtained after step III) under conditions sufficient to at least partially trimerize to isocyanurate groups NCO groups present in the free-radically crosslinked resin of the obtained precursor to obtain the object.

THERMOSETTING MATERIAL FOR USE IN A 3D PRINTING PROCESS
20230211552 · 2023-07-06 ·

The present invention relates to a thermosetting material for use in a 3D printing process comprising: a) at least one epoxy resin A, b) at least one elastomer-modified epoxy resin B, c) at least one resin C with a dynamic viscosity of below 4 Pas at 150° C., d) at least one of a curing agent D capable of reacting with A, B and optionally C, e) and optionally additional compounds,
wherein the glass transition temperature of the uncured material is at least 30° C., preferably at least 40° C. as measured with DSC at a heating rate of 20° C./min.

The invention further relates to a method of producing a cured 3D thermoset object and the use of the above-mentioned thermosetting material in a 3D printing process.

Peroxide containing polyolefin formulation
11535731 · 2022-12-27 · ·

A process of melt compounding a polyolefin formulation comprising a ethylenic-based (co)polymer, an antioxidant, and from 0.15 to 1.00 weight percent of an organic peroxide having a 1-hour half-life temperature of less than or equal to 155 degrees Celsius (° C.) and/or a 10-hour half-life temperature of less than or equal to 135° C. Also, intermediate compositions having a modified rheology and crosslinked polyolefin products made therefrom; methods of making and using same; and articles containing same.

CROSSLINKED POLYOLEFIN SEPARATOR, METHOD FOR MANUFACTURING CROSSLINKED POLYOLEFIN SEPARATOR AND ELECTROCHEMICAL DEVICE INCLUDING THE SAME
20220407180 · 2022-12-22 · ·

A crosslinked polyolefin separator having a ratio (A/B) of storage modulus G′ (A) to loss modulus G″ (B) of 2 or more, at a range of the frequency of the crosslinked polyolefin separator of 1 rad/s or less, in the frequency-loss/storage modulus curve. The crosslinked polyolefin separator is controlled to have a high ratio of storage modulus to loss modulus, and thus maintains its elasticity even at high temperature. Therefore, it is possible to provide a separator having improved safety.

Multiphenylethynyl-Containing and Lightly Crosslinked Polyimides Capable of Memorizing Shapes and Augmenting Thermomechanical Stability
20220388222 · 2022-12-08 ·

The invention generally relates to shape memory films that are tri-functionally crosslinked and that comprise multiple, non-terminal, phenylethynyl moieties. In addition, the present invention relates methods of fabricating such films. Due to the improved properties of such SMPs, the SMP designer can program in to the SMP thermomechanical property enhancements that make the SMP suitable, among other things, for advanced sensors, high temperature actuators, responder matrix materials and heat responsive packaging.

METHOD FOR PRODUCING A RUBBER-PLASTIC COMPOSITE

A method for producing a rubber-plastic composite, including the steps of (a) shaping an unvulcanized elastomer, (b) partially vulcanizing the shaped elastomer at a temperature of at least 140° C. up to a degree of vulcanization in the range from 10% to 40%, (c) cooling the partially vulcanized elastomer to a temperature of less than 100° C. within less than 20 minutes, (d) overmolding the partially vulcanized elastomer with a plastic, and (e) heat treating the partially vulcanized elastomer overmolded with a plastic at a temperature in the range from 100° C. to 170° C. for a duration of from 5 minutes to 5 hours to complete the vulcanization and form a rubber-plastic composite. The method further relates to a rubber-plastic composite obtainable by the method according to the invention and also to a shoe comprising the rubber-plastic composite obtainable by the method according to the invention.

Dual-curing isocyanurate polymers

The present invention relates to polymerizable compositions which contain components that can be crosslinked both via isocyanurate bonds and by a radical reaction mechanism. The invention further relates to methods by way of which polymers can be produced from said compositions.

THERMOSETTING MATERIAL FOR USE IN ADDITIVE MANUFACTURING
20230158737 · 2023-05-25 ·

The present invention relates to a thermosetting material for use in additive manufacturing, the material comprising at least one thermosetting resin and at least two curing compounds different from said thermosetting resin that are able to cure this/these thermosetting resin(s), wherein at least one curing compound is provided for curing during the additive manufacturing process and at least one curing compound is provided for curing during a post-curing step. The invention furthermore relates to a method of producing a cured 3D thermoset object comprising at least the steps of subjecting the material according to the present invention to an additive manufacturing process, obtaining a partially cured 3D thermoset object and subsequently subjecting the partially cured 3D thermoset object to a post-curing process to further cure the 3D thermoset object Additionally, the invention relates to the use of the material in an SLS, FFF, CBAM, FGF or powder bed additive manufacturing process.

METHOD FOR PREPARING SUPER ABSORBENT POLYMER

The present disclosure relates to a method for preparing a super absorbent polymer. More specifically, it relates to a method for preparing a super absorbent polymer capable of preparing a super absorbent polymer in which the residual monomer content and the extractable content are simultaneously reduced by adding a reducing agent capable of a redox reaction with a thermal polymerization initiator before drying the hydrogel polymer.