April A Rodriguez

US Patent:

20200290931, Sep 17, 2020

Filed:

May 30, 2020

Appl. No.:

16/888724

Inventors:

- Malibu CA, US
Andrew P. NOWAK - Los Angeles CA, US
Ashley M. DUSTIN - Los Angeles CA, US
April R. RODRIGUEZ - Santa Monica CA, US
Phuong BUI - Thousand Oaks CA, US
Tobias A. SCHAEDLER - Oak Park CA, US

International Classification:

C04B 35/571
B33Y 70/00
B33Y 80/00
B28B 1/00
C08G 77/50

Abstract:

This disclosure provides resin formulations which may be used for 3D printing and thermally treating to produce a ceramic material. The disclosure provides direct, free-form 3D printing of a preceramic polymer, followed by converting the preceramic polymer to a 3D-printed ceramic composite with potentially complex 3D shapes. A wide variety of chemical compositions is disclosed, and several experimental examples are included to demonstrate reduction to practice. For example, preceramic resin formulations may contain a carbosilane in which there is at least one functional group selected from vinyl, allyl, ethynyl, unsubstituted or substituted alkyl, ester group, amine, hydroxyl, vinyl ether, vinyl ester, glycidyl, glycidyl ether, vinyl glycidyl ether, vinyl amide, vinyl triazine, vinyl isocyanurate, acrylate, methacrylate, alkacrylate, alkyl alkacrylate, phenyl, halide, thiol, cyano, cyanate, or thiocyanate. The resin formulations may contain a solid-phase filler, to provide high thermal stability and mechanical strength (e.g., fracture toughness) in the final ceramic material.

US Patent:

20200291185, Sep 17, 2020

Filed:

Dec 17, 2019

Appl. No.:

16/717466

Inventors:

- Malibu CA, US
Ashley M. DUSTIN - Los Angeles CA, US
April R. RODRIGUEZ - Santa Monica CA, US
Kevin DRUMMEY - Los Angeles CA, US

International Classification:

C08G 75/16

Abstract:

Some variations provide a polysulfide-based copolymer containing first repeat units comprising S-derived sulfur atoms bonded via sulfur-sulfur bonds; and second repeat units comprising an organic, non-aromatic thiol molecule. Other variations provide a polysulfide-based copolymer containing first repeat units comprising S-derived sulfur atoms bonded via sulfur-sulfur bonds; and second repeat units comprising an organic, non-aromatic unsaturated molecule, wherein the polysulfide-based copolymer has a total sulfur concentration of about 10 wt % or greater. Other variations provide a polysulfide-based copolymer containing first repeat units comprising S-derived sulfur atoms bonded via sulfur-sulfur bonds; second repeat units comprising an organic, non-aromatic thiol molecule; and third repeat units comprising an organic, non-aromatic unsaturated molecule. Other variations provide a polysulfide-based copolymer containing first repeat units comprising S-derived sulfur atoms bonded via sulfur-sulfur bonds; and second repeat units comprising an organic, non-aromatic thioether molecule. The disclosed polysulfide-based copolymers provide broadband transparency, fracture toughness, fluid resistance, and low cost.

US Patent:

20200277510, Sep 3, 2020

Filed:

May 17, 2020

Appl. No.:

16/876075

Inventors:

- Malibu CA, US
Andrew P. NOWAK - Los Angeles CA, US
Jason A. GRAETZ - Calabasas CA, US
John J. VAJO - West Hills CA, US
April R. RODRIGUEZ - Santa Monica CA, US

International Classification:

C09D 171/02
C08G 65/00
C08L 101/02
C09D 201/02
C08G 65/22
C08G 81/00

Abstract:

Some variations provide a multiphase polymer composition comprising a first polymer material and a second polymer material that are chemically distinct, wherein the first polymer material and the second polymer material are microphase-separated on a microphase-separation length scale from about 0.1 microns to about 500 microns, wherein the multiphase polymer composition comprises first solid functional particles selectively dispersed within the first polymer material, and wherein the first solid functional particles are chemically distinct from the first polymer material and the second polymer material. Some embodiments provide an anti-corrosion composition comprising first corrosion-inhibitor particles or precursors selectively dispersed within the first polymer material, wherein the multiphase polymer composition optionally further comprises second corrosion-inhibitor particles or precursors selectively dispersed within the second polymer material. These multiphase polymer compositions may be used for other applications, such as self-cleaning, self-healing, or flame-retardant coatings. Methods of making and using these multiphase polymer compositions are disclosed.

US Patent:

20190048223, Feb 14, 2019

Filed:

Apr 19, 2018

Appl. No.:

15/957638

Inventors:

- Malibu CA, US
Andrew P. NOWAK - Los Angeles CA, US
Jason A. GRAETZ - Calabasas CA, US
John J. VAJO - West Hills CA, US
April R. RODRIGUEZ - Santa Monica CA, US

International Classification:

C09D 171/02
C08G 81/00
C08G 65/22

Abstract:

Some variations provide a multiphase polymer composition comprising a first polymer material and a second polymer material that are chemically distinct, wherein the first polymer material and the second polymer material are microphase-separated on a microphase-separation length scale from about 0.1 microns to about 500 microns, wherein the multiphase polymer composition comprises first solid functional particles selectively dispersed within the first polymer material, and wherein the first solid functional particles are chemically distinct from the first polymer material and the second polymer material. Some embodiments provide an anti-corrosion composition comprising first corrosion-inhibitor particles or precursors selectively dispersed within the first polymer material, wherein the multiphase polymer composition optionally further comprises second corrosion-inhibitor particles or precursors selectively dispersed within the second polymer material. These multiphase polymer compositions may be used for other applications, such as self-cleaning, self-healing, or flame-retardant coatings. Methods of making and using these multiphase polymer compositions are disclosed.

US Patent:

20180237643, Aug 23, 2018

Filed:

Apr 23, 2018

Appl. No.:

15/960149

Inventors:

- Malibu CA, US
April R. RODRIGUEZ - Los Angeles CA, US
Jason A. GRAETZ - Calabasas CA, US
Adam F. GROSS - Santa Monica CA, US

International Classification:

C09D 5/16
C09D 127/12
C09D 171/08
C08G 81/00
C08G 65/22
C08K 5/00

Abstract:

This disclosure describes incorporation of a liquid additive within one or more phases of a multiphase polymer coating. The structure of the microphase-separated network provides reservoirs for liquid in discrete and/or continuous phases. Some variations provide an anti-fouling segmented copolymer composition comprising: (a) one or more first soft segments selected from fluoropolymers; (b) one or more second soft segments selected from polyesters or polyethers; (c) one or more isocyanate species; (d) one or more polyol or polyamine chain extenders or crosslinkers; and (e) a liquid additive disposed in the first soft segments and/or the second soft segments. The first soft segments and the second soft segments are microphase-separated on a microphase-separation length scale from 0.1 microns to 500 microns. These solid/liquid hybrid materials improve physical properties associated with the coating in applications such as anti-fouling (e.g., anti-ice or anti-bug) surfaces, ion conduction, and corrosion resistance.

US Patent:

20180148380, May 31, 2018

Filed:

Nov 26, 2017

Appl. No.:

15/822199

Inventors:

- Malibu CA, US
Andrew P. NOWAK - Los Angeles CA, US
Ashley M. NELSON - Los Angeles CA, US
April R. RODRIGUEZ - Los Angeles CA, US

International Classification:

C04B 35/56
C09D 7/12
C09D 11/101
C09D 11/102
C09D 11/03
B33Y 70/00
B29C 64/10
B28B 1/00

Abstract:

This invention provides resin formulations which may be used for 3D printing and pyrolyzing to produce a ceramic matrix composite. The resin formulations contain a solid-phase filler, to provide high thermal stability and mechanical strength (e.g., fracture toughness) in the final ceramic material. The invention provides direct, free-form 3D printing of a preceramic polymer loaded with a solid-phase filler, followed by converting the preceramic polymer to a 3D-printed ceramic matrix composite with potentially complex 3D shapes or in the form of large parts. Other variations provide active solid-phase functional additives as solid-phase fillers, to perform or enhance at least one chemical, physical, mechanical, or electrical function within the ceramic structure as it is being formed as well as in the final structure. Solid-phase functional additives actively improve the final ceramic structure through one or more changes actively induced by the additives during pyrolysis or other thermal treatment.

US Patent:

20180037746, Feb 8, 2018

Filed:

Aug 2, 2017

Appl. No.:

15/667463

Inventors:

- Malibu CA, US
Andrew P. NOWAK - Los Angeles CA, US
April R. RODRIGUEZ - Los Angeles CA, US

International Classification:

C09D 5/00
C08G 18/32
C08G 18/75
C08G 18/62
C08G 18/66
C09D 175/08
C08G 18/50

Abstract:

This disclosure provides coatings that eliminate the problem of persistent oil or grease smudges deposited on transparent coatings. Some variations provide an oil-smudge-resistant material comprising discrete inclusions dispersed within a continuous matrix, wherein one of the discrete inclusions and the continuous matrix is an oleophobic material, and the other is an oleophilic material. Specific embodiments incorporate segmented polyurethanes with oleophobic fluoropolymers and oleophilic hydrocarbons. Some embodiments utilize inorganic oleophilic particles in an oleophobic matrix. Some embodiments condense urethane-silane crosslinkers with other silanes to form discrete domains of oleophobic or oleophilic silanes within a continuous matrix of oleophilic or oleophobic polymer. Waterborne coatings are provided in which one of the discrete inclusions and the continuous matrix is derived from an aqueous dispersion of a linear crosslinkable polyurethane containing charged groups, and the other is derived from a crosslinking agent containing charged groups.

US Patent:

20180030329, Feb 1, 2018

Filed:

Oct 9, 2017

Appl. No.:

15/727669

Inventors:

- Malibu CA, US
April R. RODRIGUEZ - Los Angeles CA, US
Jason A. GRAETZ - Calabasas CA, US
Adam F. GROSS - Santa Monica CA, US

International Classification:

C09K 5/20
C08G 65/22
A01N 31/02
C07C 31/18

Abstract:

Some variations provide a composition comprising: a first solid material and a second solid material that are chemically distinct and microphase-separated; and at least one liquid selectively absorbed into either of the first solid material or the second solid material. The first and second solid materials are preferably present as phase-separated regions of a copolymer, such as in a segmented copolymer (e.g., a urethane-urea copolymer). The liquid may be a freezing-point depressant for water. For example, the liquid may be selected from methanol, ethanol, isopropanol, ethylene glycol, propylene glycol, or glycerol. The liquid may be a lubricant. For example, the liquid may be selected from fluorinated oils, siloxanes, petroleum-derived oils, mineral oil, or plant-derived oils. The liquid may consist of or include water. The liquid may be an electrolyte. For example, the liquid may be selected from poly(ethylene glycol), ionic liquids, dimethyl carbonate, diethyl carbonate, or methyl ethyl dicarbonate.