EP0057985A2
Expired / Lapsed
EP
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Method of permanently sizing polyester yarns and fabrics woven therewith
Assignee: Rohm and Haas Co
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Filing: 1982-01-19
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Granted: —
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Expires: 2002-01-19
Abstract
Abstract In a method for permanently sizing a polyester or polyester-blend yarn wherein an aqueous sizing composition is applied to the yarn and subsequently cured, the sizing composition comprises an aqueous polymer latex of an emulsion polymer comprising 45 to 65% by weight of one or more polymerised (C 4 - C 8 alkyl)acrylates, 28 to 52% by weight of one or more vinyl polymerised aromatic compounds or a mixture thereof with up to an equal weight of polymerised methyl methacrylate, and 3 to 14% by weight of one or more of polymerised acrylic, methacrylic or itaconic acid and containing 2 to 40% by weight of a melamine aminoplast resin, based on the weight of the polymer. By incorporating a pigment in the sizing composition colour fast pigmented sized yarns and fabrics can be produced.
Inventors
- 👤 Hal Conly Morris
- 👤 Donald Leonard Glusker
- 👤 George Campbell Kantner
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-10-27 17:05
CPC Classifications
D; D06; D06M; D06M15/00; D06M15/19; D06M15/21; D06M15/263; D06B; D06B3/00; D06B3/04; D06M15/227; D06M15/233
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
123 words
A method of permanently sizing polyester yarns or yarns comprising a blend of polyester and other fibres which comprises applying an aqueous sizing composition to the yarn, and treating the sized yarn to cure the size, wherein the sizing composition comprises an aqueous polymer latex of an emulsion polymer comprising 45-65% by weight of one or more polymerised C 4 - C 8 alkyl acrylates, 28-52% by weight of one or more vinyl polymerised aromatic compounds or a mixture thereof with up to an equal weight of polymerised methyl methacrylate, and 3-14% by weight of one or more of polymerised acrylic, methacrylic or itaconic acid and containing from 2-40% by weight of a melamine aminoplast resin based on the weight of the polymer.
Claim 2
Independent Claim
123 words
A method of permanently sizing polyester yarns or yarns comprising a blend of polyester and other fibres which comprises applying an aqueous sizing composition to the yarn, and treating the sized yarn to cure the size, wherein the sizing composition comprises an aqueous polymer latex of an emulsion polymer comprising 45-65% by weight of one or more polymerised C 4 - C 8 alkyl acrylates, 28-52% by weight of one or more vinyl polymerised aromatic compounds or a mixture thereof with up to an equal weight of polymerised methyl methacrylate, and 3-14% by weight of one or more of polymerised acrylic, methacrylic or itaconic acid and containing from 2-40% by weight of a melamine aminoplast resin based on the weight of the polymer.
Claim 3
Dependent Claim
41 words
A method according to claim 1, wherein the sizing composition contains as said emulsion polymer a polymer of 45-6% by weight polymerised butyl acrylate, 28-52% by weight polymerised styrene or vinyl toluene, and 3-14% by weight polymerised acrylic or methacrylic acid.
Claim 4
Dependent Claim
20 words
A method according to claim 2, wherein said polymer contains 50-59% n-butyl acrylate, 31-46% styrene, 4-12% acrylic or methacrylic acid.
Claim 5
Dependent Claim
27 words
A method according to claim 1, 2 or 3, wherein said latex contains 4-25% by weight of the aminoplast resin based on the weight of the polymer.
Claim 6
Independent Claim
33 words
A method according to any one of claims 1-4, wherein the melamine aminoplast resin is hexamethoxymethyl melamine or a partially methylated polymeric melamine having an equivalent weight in the range 225 to 325.
Claim 7
Independent Claim
38 words
A method according to any one of claims 1-5, wherein the the size is applied to the yarn in an amount of from 0.5 to 20% by weight of said polymer, based on the weight of the yarn.
Claim 8
Dependent Claim
32 words
A method according to-claim 6, wherein said yarn is a spun yarn and the polymer is applied in an amount of from 5-15% by weight based on the weight of the yarn.
Claim 9
Dependent Claim
34 words
A method according to claim 6, wherein the yarn is a continuous filament yarn and the polymer is applied in an amount of from 1-10% by weight based on the weight of the yarn.
Claim 10
Dependent Claim
23 words
A method according to any one of claim 1-8, wherein the size coating on the yarn is cured by heating the treated yarn.
Claim 11
Independent Claim
17 words
A method according to any one of claims 1-9, wherein the sizing composition additionally contains a pigment.
Claim 12
Dependent Claim
22 words
A fabric woven from permanently sized polyester and polyester-blend yarns when sized by a method claimed in any one of claims 1-10.
References Cited (Backward Citations)
No citation records indexed.
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