Patents by Inventor Chongfu Zhou
Chongfu Zhou has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Publication number: 20220127533Abstract: Provided are phosphorus nitrogen flame retardants represented by Formula III, a method of preparing the flame retardants without using any solvent, and various materials comprising the flame retardants. Rb and Rc are independently of each other selected from hydrogen, substituted or unsubstituted alkyl such as C1-C18 alkyl, substituted or unsubstituted heteroalkyl, substituted or unsubstituted cycloalkyl, substituted or unsubstituted heterocyclic alkyl, substituted or unsubstituted heterocycles, substituted or unsubstituted aryl such as C6˜C18 aryl, substituted or unsubstituted heteroaryl such as C3˜C18 heteroaryl, and acyl radical. The invention exhibits numerous technical merits such as excellent flame retardant efficacy, good compatibility with polymers, lower migration to material surface, excellent hydrolysis resistance, low smoke and low toxicity during burning, simpler preparation process, fewer by-products, shorter reaction time, higher yield, and no environmental impact, among others.Type: ApplicationFiled: November 15, 2021Publication date: April 28, 2022Inventor: Chongfu ZHOU
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Publication number: 20210261770Abstract: A continuous fiber reinforced thermoplastic (CFRTP) tape is disclosed, made of continuous, unidirectional glass fibers embedded in polyethylene terephthalate glycol modified (PETG) containing a polyphosphonate homopolymer non-halogenated flame retardant (NHFR). With formulations balancing the spread of flame and the detection of smoke, the tape achieves a Class A value when tested in accordance with ASTM E84.Type: ApplicationFiled: May 29, 2019Publication date: August 26, 2021Applicant: Avient CorporationInventors: Mark ELKOVITCH, Roger W. AVAKIAN, Jian ZHOU, Chongfu ZHOU, Daniel FLAGG
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Patent number: 10100192Abstract: A completely non-halogenated flame retardant polycarbonate compound includes polycarbonate, non-halogenated termini-functional chemical such as vinyl-terminated siloxane and non-halogenated hydride-functional polysiloxane as non-halogenated drip suppressant ingredients which react in the presence of heat to form a drip suppressant adduct, and potassium 3-(phenylsulfonyl)benzenesulfonate as a non-halogenated char former. The compound can achieve a UL 94 rating of V-0 at a thickness of at least 3.2 mm and otherwise achieves no dripping/igniting of the cotton indicator during that test.Type: GrantFiled: June 12, 2014Date of Patent: October 16, 2018Assignee: PolyOne CorporationInventors: Chongfu Zhou, Roger W. Avakian
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Patent number: 9944795Abstract: Functionalized non-halogenated flame retardants are disclosed having improved hydrolytic stability, represented by decreased conductivity measured in units of ? S/cm when immersed in distilled water and heated to 80 C. The functionalized flame retardant comprises polyphosphonate functionalized by epoxy-functional styrene-acrylic oligomer or aromatic carbodiimide, and optionally antioxidant. Also disclosed are polymer compounds, comprising the functionalized flame retardant described above and a second polymer resin; and flame retardant plastic articles made from such polymer compounds.Type: GrantFiled: September 11, 2013Date of Patent: April 17, 2018Assignee: PolyOne CorporationInventors: Chongfu Zhou, Roger W. Avakian
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Patent number: 9884961Abstract: A non-halogenated flame retardant polycarbonate compound is disclosed. The compound comprises a polycarbonate, a non-halogenated, non-migrating, non-plasticizing flame retardant adduct. The compound can achieve a UL 94 rating of V-0 at a thickness of at least 3.2 mm and otherwise achieves no dripping/igniting of the cotton indicator during that test. The adduct is formed from an allyl-functional phenoxyphosphazene and a hydride-functional polysiloxane.Type: GrantFiled: November 4, 2014Date of Patent: February 6, 2018Assignee: PolyOne CorporationInventors: Chongfu Zhou, Roger W. Avakian
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Patent number: 9884963Abstract: High temperature nylon compounds that are flame retardant using non-halogenated ingredients are disclosed. Polyphenylene ether, or alternatively the combination of polyphenylene ether and bismaleimides, act as synergists with polyphosphonate to achieve a V-0 rating in a UL 94 test at thicknesses of about 3.18 mm or, preferably, about 1.59 mm.Type: GrantFiled: June 3, 2014Date of Patent: February 6, 2018Assignee: PolyOne CorporationInventors: Chongfu Zhou, Roger W. Avakian
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Patent number: 9879137Abstract: Poly(hexamethylene adipamide), (also referred to as Nylon 6,6) compounds that are flame retardant using non-halogenated ingredients are disclosed. Polyphenylene ether or bismaleimides act as synergists when used in specific amounts in combination with polyphosphonate to achieve a V-1 or V-0 rating in a UL 94 test at thicknesses of about 3.18 mm.Type: GrantFiled: August 7, 2014Date of Patent: January 30, 2018Assignee: PolyOne CorporationInventors: Chongfu Zhou, Roger W. Avakian
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Patent number: 9879136Abstract: Poly(hexano-6-lactam) (also known as Nylon 6) compounds that are flame retardant using non-halogenated ingredients are disclosed. Polyphenylene ether acts as a synergist when used in specific amounts in combination with polyphosphonate to achieve a V-0 rating in a UL 94 test at thicknesses of about 3.18 mm.Type: GrantFiled: August 7, 2014Date of Patent: January 30, 2018Assignee: PolyOne CorporationInventors: Chongfu Zhou, Roger W. Avakian
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Publication number: 20170369673Abstract: Flame retardant polybutylene succinate (PBS) compounds using a non-halogenated intumescent flame retardant system are disclosed.Type: ApplicationFiled: December 21, 2015Publication date: December 28, 2017Applicant: PolyOne CorporationInventors: Chongfu ZHOU, Roger W. AVAKIAN
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Publication number: 20160272812Abstract: A non-halogenated flame retardant polycarbonate compound is disclosed. The compound comprises a polycarbonate, a non-halogenated, non-migrating, non-plasticizing flame retardant adduct. The compound can achieve a UL 94 rating of V-0 at a thickness of at least 3.2 mm and otherwise achieves no dripping/igniting of the cotton indicator during that test. The adduct is formed from an allyl-functional phenoxyphosphazene and a hydride-functional polysiloxane.Type: ApplicationFiled: November 4, 2014Publication date: September 22, 2016Applicant: PolyOne CorporationInventors: Chongfu ZHOU, Roger W. AVAKIAN
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Publication number: 20160185961Abstract: Poly(hexano-6-lactam) (also known as Nylon 6) compounds that are flame retardant using non-halogenated ingredients are disclosed. Polyphenylene ether acts as a synergist when used in specific amounts in combination with polyphosphonate to achieve a V-0 rating in a UL 94 test at thicknesses of about 3.18 mm.Type: ApplicationFiled: August 7, 2014Publication date: June 30, 2016Applicant: PolyOne CorporationInventors: Chongfu ZHOU, Roger W. AVAKIAN
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Publication number: 20160185962Abstract: Poly(hexamethylene adipamide), (also referred to as Nylon 6,6) compounds that are flame retardant using non-halogenated ingredients are disclosed. Polyphenylene ether or bismaleimides act as synergists when used in specific amounts in combination with polyphosphonate to achieve a V-1 or V-0 rating in a UL 94 test at thicknesses of about 3.18 mm.Type: ApplicationFiled: August 7, 2014Publication date: June 30, 2016Applicant: PolyOne CorporationInventors: Chongfu ZHOU, Roger W. AVAKIAN
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Publication number: 20160122534Abstract: A completely non-halogenated flame retardant polycarbonate compound is disclosed. The compound comprises a polycarbonate, non-halogenated drip suppressant ingredients which react in the presence of heat to form a drip suppressant adduct, and a non-halogenated char former. The compound can achieve a UL 94 rating of V-0 at a thickness of at least 3.2 mm and otherwise achieves no dripping/igniting of the cotton indicator during that test.Type: ApplicationFiled: June 12, 2014Publication date: May 5, 2016Applicant: PolyOne CorporationInventors: Chongfu ZHOU, Roger W. AVAKIAN
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Publication number: 20160102204Abstract: High temperature nylon compounds that are flame retardant using non-halogenated ingredients are disclosed. Poly phenylene ether, or alternatively the combination of polyphenylene ether and bismaleimides, act as synergists with polyphosphonate to achieve a V-0 rating in a UL 94 test at thicknesses of about 3.18 mm or, preferably, about 1.59 mm.Type: ApplicationFiled: June 3, 2014Publication date: April 14, 2016Applicant: PolyOne CorporationInventors: Chongfu ZHOU, Roger W. AVAKIAN
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Publication number: 20150240080Abstract: Functionalized non-halogenated flame retardants are disclosed having improved hydrolytic stability, represented by decreased conductivity measured in units of ? S/cm when immersed in distilled water and heated to 80 C. The functionalized flame retardant comprises polyphosphonate functionalized by epoxy-functional styrene-acrylic oligomer or aromatic carbodiimide, and optionally antioxidant. Also disclosed are polymer compounds, comprising the functionalized flame retardant described above and a second polymer resin; and flame retardant plastic articles made from such polymer compounds.Type: ApplicationFiled: September 11, 2013Publication date: August 27, 2015Applicant: PolyOne CorporationInventors: Chongfu Zhou, Roger W. Avakan