Abstract: Polymer compositions for making stabilized polymeric articles that are resistant to at least one deleterious effect of discoloration, cracking, or crazing upon exposure to UV-C (190-280 nm) light are provided herein, wherein the polymer compositions include: (i) an organic polymeric material; and (ii) a stabilizer composition comprising: an antioxidant selected from the group consisting of hindered phenols, phosphites and phosphonites, and mixtures thereof; and a light stabilizer selected from the group consisting of hindered amine light stabilizers (HALS), UV absorbers (UVA), hindered benzoates, and mixtures thereof, even where barium compounds (such as barium salts) are absent from the stabilizer composition, and with the proviso that the HALS is not bis(2,2,6,6,-tetramethyl-4-piperidyl) sebacate (TINUVIN™ 770) alone.
Type:
Application
Filed:
November 24, 2021
Publication date:
June 2, 2022
Applicant:
CYTEC INDUSTRIES INC.
Inventors:
Jerry Mon-Hei ENG, Ram B. GUPTA, Xin LI, Jian-Yang CHO, Kyle O'CONNOR, Thomas SANTAMARIA, Min WANG
Abstract: A spinneret assembly for spinning polymeric fibers, including: (a) a cap provided with an inlet port and a flared lower surface that flares outwardly from the inlet port in the direction of flow; (b) a spinneret having numerous spinning flow channels through its thickness; (c) a filter freely resting on the spinneret; and (d) a flow guide with a tapered geometry mounted in a cavity defined by the cap and the spinneret. The flow guide has an apex facing the inlet port, a base facing the filter, and one or more side surfaces tapering up to the apex. A diverging flow passage is defined by the tapering side surface(s) of the flow guide and the cap's flared lower surface. The base of the flow guide is spaced apart from an upper surface of the spinneret, creating a space that is in fluid communication with the divergent flow passage.
Abstract: Composite materials and structural adhesives containing particles of functionalized polymers as a toughening agent. The particles are composed of functionalized polyaryletherketone (PAEK) polymer or copolymer thereof that contain chemical functional groups capable of reacting with a thermoset resin component to form covalent bonds.
Type:
Application
Filed:
December 15, 2021
Publication date:
April 7, 2022
Applicant:
CYTEC INDUSTRIES INC.
Inventors:
James Francis Pratte, Robin K. Maskell, James Martin Griffin, Judith Anne Elder
Abstract: Composite materials and structural adhesives containing particles of functionalized polymers as a toughening agent. The particles are composed of functionalized polyaryletherketone (PAEK) polymer or copolymer thereof that contain chemical functional groups capable of reacting with a thermoset resin component to form covalent bonds.
Type:
Grant
Filed:
May 21, 2015
Date of Patent:
April 5, 2022
Assignee:
CYTEC INDUSTRIES INC.
Inventors:
James Francis Pratte, Robin K Maskell, James Martin Griffin, Judith Anne Elder
Abstract: Stabilized compositions having an organic material to be stabilized and a resin masterbatch system provided as closed end pellets are provided herein, along with processes for producing stabilized articles.
Type:
Application
Filed:
March 31, 2021
Publication date:
February 17, 2022
Applicant:
CYTEC INDUSTRIES INC.
Inventors:
Joseph Kozakiewicz, Jerry Mon Hei ENG, Ram B. GUPTA, David VANZIN, Shailesh MAJMUDAR
Abstract: Stabilizer compositions having a stabilizing amount of at least one co-active agent; an ultraviolet light absorber chosen from orthohydroxyphenyl triazine compounds and/or benzoxazinone compounds; and a hindered amine light stabilizer, are provided herein, along with masterbatch concentrates containing same, and processes for using same for stabilizing polymeric organic materials to protect against light and thermal degradation due to exposure to UV irradiation.
Type:
Application
Filed:
August 16, 2021
Publication date:
December 30, 2021
Applicant:
Cytec Industries Inc.
Inventors:
J. Mon Hei ENG, Joseph Kozakiewicz, Ram B. Gupta, Jian-Yang Cho, Roderick G. Ryles, Fadi Khawam
Abstract: A method for surface preparation of a composite substrate prior to adhesive bonding. The surface preparation method includes applying a resin-containing peel ply onto a composite substrate, followed by co-curing. The resin-containing peel ply contains a non-removable textile carrier and a removable woven fabric embedded therein. After co-curing, the peel ply is removed from the composite substrate such that the removable woven fabric is removed but the non-removable textile carrier and a film of residual resin remain on the composite substrate, thereby creating a modified, bondable surface on the composite substrate. The composite substrate with the modified surface can be bonded to another composite substrate, whereby the textile carrier remains an integrated part of the final bonded structure.
Abstract: Curable epoxy resin compositions suitable for liquid resin infusion processes. In one embodiment, the resin composition contains (a) at least two polyepoxides, one of which is triglycidyl ether of tris(hydroxyphenyl)methane, (b) an aromatic amine curing agent, and (c) core-shell rubber particles. In another embodiment, the resin composition (a) at least two polyepoxides, one of which is diglycidyl ether of bis(hydroxyphenyl)fluorene, (b) an aromatic amine curing agent, and (c) core-shell rubber particles.
Abstract: A fiber-reinforced polymeric composite structure having chemically active thermoset particles positioned in an interlaminar region between adjacent layers of reinforcement fibers and method of making the same. Upon curing of the composite structure, the chemically active functional groups on the thermoset particles form covalent bonds with the matrix resin surrounding the particles. In one embodiment, the particles are formed of a partially cured thermoset polymer with a degree of cure of less than 100%. In another embodiment, the particles are derived from a thermosettable resin composition, wherein the stoichiometry is such that there is a deficiency or an excess in the amount of curing agent that is necessary for reacting with 100% of the thermoset resin component. In some embodiments, the composition of the chemically active thermoset particles is the same or substantially the same as that of the matrix resin of the composite structure.
Type:
Grant
Filed:
November 8, 2018
Date of Patent:
November 9, 2021
Assignee:
Cytec Industries Inc.
Inventors:
Vincent Aerts, William Jacobs, James Martin Griffin
Abstract: A hot drape-forming method for shaping fibrous preforms and prepreg plies into complex geometries. For shaping fibrous preforms, the hot drape-forming method includes: a) dividing the total number of preforms into a plurality of sub-preforms (S1, S2, S3); and b) consecutively shaping each sub-preform (S1, S2, S3) by applying vacuum pressure and heat, wherein the shaping of all sub-preforms (S1, S2, S3) are carried out in the same tool housing (10) over the same molding surface. The resulting shaped preform (S1, S2, S3) is ready for resin infusion. The same method can also be used to shape resin-impregnated prepreg plies.
Abstract: A laminar pre-preg of fibre-reinforced curable composite material. The pre-preg includes at least one layer of reinforcing fibres impregnated with a curable resin containing one or more curable thermosetting resin(s) and at least one liquid curative, wherein the curable resin exhibits a cure conversion of at least 95% when cured at a cure temperature in the range of from about 100° C. to about 160° C. and the cure cycle has a duration of no more than 10 minutes, and the glass transition temperature (Tg) of the curable resin when cured is in the range of from about 130° C. to about 165° C.
Type:
Grant
Filed:
August 12, 2016
Date of Patent:
October 19, 2021
Assignee:
CYTEC INDUSTRIES INC.
Inventors:
Ian Paul Aspin, Andrew Steven Gibbs, Oliver James Nicks
Abstract: Disclosed herein are methods for isolating a composite material from the environment, as well as the isolated composite material. Also disclosed herein are methods for shaping a composite material that include the use of isolated composite materials. For example, disclosed is a method for mechanical thermoforming of a composite material to form a shaped composite material.
Type:
Application
Filed:
June 14, 2021
Publication date:
October 7, 2021
Applicant:
Cytec Industries Inc.
Inventors:
Tim Wybrow, Richard Hollis, Dean Wright, Thomas Corden, Darren Wells, Alasdair Ryder
Abstract: Disclosed herein are methods for isolating a composite material from the environment, as well as the isolated composite material. Also disclosed herein are methods for shaping a composite material that include the use of isolated composite materials. For example, disclosed is a method for mechanical thermoforming of a composite material to form a shaped composite material.
Type:
Application
Filed:
June 14, 2021
Publication date:
September 30, 2021
Applicant:
Cytec Industries Inc.
Inventors:
Tim Wybrow, Richard Hollis, Dean Wright, Thomas Corden, Darren Wells, Alasdair Ryder
Abstract: Disclosed herein are methods for isolating a composite material from the environment, as well as the isolated composite material. Also disclosed herein are methods for shaping a composite material that include the use of isolated composite materials. For example, disclosed is a method for mechanical thermoforming of a composite material to form a shaped composite material.
Type:
Application
Filed:
June 14, 2021
Publication date:
September 30, 2021
Applicant:
Cytec Industries Inc.
Inventors:
Tim Wybrow, Richard Hollis, Dean Wright, Thomas Corden, Darren Wells, Alasdair Ryder
Abstract: A resin infusion method that incorporates a melt-on-demand approach. The method includes: (a) providing a curable resin composition in the form of a block of frozen resin (20); (b) coupling the block of frozen resin (20) to an inlet port of a heated extruder (22), which comprises at least one rotating screw (24) housed within a heated barrel (25); (c) progressively melting the block of frozen resin (20) at the inlet port and concurrently feeding the melt resin through the heated barrel (25) to produce a liquid resin having a viscosity suitable for resin infusion; (d) continuously feeding the liquid resin exiting from the extruder to a mold, which contains a fibrous preform; and (e) introducing the liquid resin into the fibrous preform, wherein the block of frozen resin (20) provides an amount of resin composition sufficient for infusing the entire fibrous preform.
Type:
Grant
Filed:
December 15, 2016
Date of Patent:
September 21, 2021
Assignee:
CYTEC INDUSTRIES INC.
Inventors:
Jonathan Edward Meegan, Michael Alexander Smith, Scott Alfred Rogers, Jeffrey Jon Rose
Abstract: Curable epoxy resin compositions suitable for liquid resin infusion processes. In one embodiment, the resin composition contains (a) at least two polyepoxides, one of which is triglycidyl ether of tris(hydroxyphenyl)methane, (b) an aromatic amine curing agent, and (c) core-shell rubber particles. In another embodiment, the resin composition (a) at least two polyepoxides, one of which is diglycidyl ether of bis(hydroxyphenyl)fluorene, (b) an aromatic amine curing agent, and (c) core-shell rubber particles.
Abstract: A multifunctional surfacing material capable of providing lightning strike protection (LSP) and burn-through resistance. In one embodiment, the multifunctional surfacing material is composed of a conductive layer positioned between two resin layers, at least one of which contains one or more fire retardant compounds. In another embodiment, the multifunctional surfacing material is composed of a conductive layer positioned between two resin layers one of which is a thermally-stable layer. The surfacing material is co-curable with a composite substrate, e.g. prepreg or prepreg layup, which contains fiber-reinforced matrix resin.
Type:
Grant
Filed:
December 29, 2016
Date of Patent:
August 31, 2021
Assignee:
CYTEC INDUSTRIES INC.
Inventors:
Junjie Jeffrey Sang, Fiorenzo Lenzi, Jonathan Edward Meegan, Leonard Macadams, Yiqiang Zhao, Dalip Kumar Kohli
Abstract: Stabilizer compositions having a stabilizing amount of at least one co-active agent; and a stabilizing amount of any one or more ultraviolet light absorber chosen from an ortho-hydroxyphenyl triazine, an ortho-hydroxy benzophenone, or an ortho-hydroxyphenyl benzotriazole, optionally in combination with a stabilizing amount of a hindered amine light stabilizer, are provided herein, along with masterbatch concentrates containing same, and processes for using same for stabilizing organic materials to protect against light and thermal degradation due to exposure to UV irradiation.
Type:
Grant
Filed:
November 20, 2015
Date of Patent:
August 17, 2021
Assignee:
Cytec Industries Inc.
Inventors:
J. Mon Hei Eng, Joseph Kozakiewicz, Ram B. Gupta, Jian-Yang Cho, Roderick G. Ryles, Fadi Khawam
Abstract: Silicon containing polyamine scale inhibitors derived from poly(primary amine)s are disclosed. The scale inhibitors can be used to reduce siliceous scale formation in industrial process streams such as alumina recovery process streams, nuclear waste streams and kraft paper mill effluent streams.
Type:
Grant
Filed:
December 15, 2015
Date of Patent:
June 29, 2021
Assignee:
Cytec Industries Inc.
Inventors:
Airong Song, Lei Zhang, Douglas Cywar, Haunn-Lin Tony Chen, Matthew Taylor
Abstract: Surface-treated polymeric particles which are dispersible in water or an aqueous solution without the aid of any surfactant. Surface treatment of hydrophobic polymeric particles is carried out to increase the surface energy and to render the surfaces of the particles hydrophilic, thereby eliminating the need for a surfactant to disperse the polymeric particles in water or an aqueous solution. As such, a surfactantless slurry can be formed from the surface-treated particles for the fabrication of fiber-reinforced thermoplastic composite structures.
Type:
Grant
Filed:
December 30, 2016
Date of Patent:
June 15, 2021
Assignee:
CYTEC INDUSTRIES INC.
Inventors:
James Martin Griffin, Kingsley Kin Chee Ho, James Francis Pratte