Patent EP0356655A2 successfully refreshed from Google Patents.
EP0356655A2
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EP
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Chemical treatment for fibres, and their use in the reinforcement of polymer matrices
Assignee: PPG Industries Ohio Inc
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Filing: 1989-07-03
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Granted: —
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Expires: 2009-07-03
Abstract
Abstract Fibrous material including fibers, bundles of fibers, strands, roving, flakes and beads have a dried residue of a chemical treating composition for improved solvent resistance of polymers the fibrous materials reinforced. The chemical treated composition has at least one crosslinkable polyurethane, at least one organofunctional silane coupling agent, and acrylic copolymer with at least one addition polymerizable acrylic-type monomer and at least one monomer that is addition polymerizable and matrix resin miscible and reactable and an organic solvent or water. In addition, the chemical treating composition can have a polyurethane crosslinking agent in an effective amount to produce a dried residue of limited swellability from the chemical treatment, where the residue is a thin film on a substantial portion of the surface of the fibrous materials. Optionally, there may be present at least one low temperature antioxidant such as alkali metal and alkaline earth metal hypo or hydrogen phosphites. Also, there may be present in addition or in lieu of the first antioxidant a high temperature antioxidant such as: alkali metal or alkaline earth metal phenylphosphonates, thioethers like dialkyl thioalkylionate and processing aids such as epoxy polyester polymers.
Inventors
- 👤 Robert Gregory Swisher
- 👤 James William Kasunic
- 👤 Peter Charles Gaa
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-09 05:38
CPC Classifications
C; C08; C08J; C08J5/00; C08J5/04; C08J5/06; C08J5/08; C03; C03C; C03C25/00; C03C25/10; C03C25/24; C03C25/26; Y; Y10; Y10T; Y10T428/00; Y10T428/29; Y10T428/2913; Y10T428/2933; Y10T428/2938; Y10T428/2962; Y10T428/2964; Y10T428/2982; Y10T428/2991; Y10T428/2998
Claims Analysis
Total Claims: 24
Claim 1
Independent Claim
96 words
Chemical treating composition for application to reinforcing materials for polymers capable to form a thin film on the reinforcing materials comprising: a. at least one crosslinkable polyurethane film forming polymer, b. at least one organofunctional silane coupling agent or its hydrolysis products, c. a copolymer of at least one addition polymerizable acrylic-type monomer and at least one monomer that is addition polymerizable and matrix-resin-miscible and matrix-resin-reactable, d. a carrier in an effective application amount for treating the reinforcement with the chemical treating composition, wherein the weight ratio of (a) to (c) ranges from 1:10 to 10:1.
Claim 2
Dependent Claim
96 words
Chemical treating composition for application to reinforcing materials for polymers capable to form a thin film on the reinforcing materials comprising: a. at least one crosslinkable polyurethane film forming polymer, b. at least one organofunctional silane coupling agent or its hydrolysis products, c. a copolymer of at least one addition polymerizable acrylic-type monomer and at least one monomer that is addition polymerizable and matrix-resin-miscible and matrix-resin-reactable, d. a carrier in an effective application amount for treating the reinforcement with the chemical treating composition, wherein the weight ratio of (a) to (c) ranges from 1:10 to 10:1.
Claim 3
Dependent Claim
31 words
The chemical treating composition of Claim 1, which further further includes a crosslinking agent for the polyurethane in a weight ratio crosslinking agent to polyurethane resin of from 1:20 to 20:1.
Claim 4
Dependent Claim
41 words
The chemical treating composition of Claim 2, wherein the crosslinking agent is selected from the group consisting of: blocked aliphatic polyisocyanate and its adducts containing buiret or allophanate groups, where the blocking agents are secondary or tertiary alcohols, C-H acid compounds.
Claim 5
Dependent Claim
78 words
The chemical treating composition of Claim 1, which further includes a metal deactivator selected from the group consisting of : polydentate ligands and compounds having the formula: wherein x is an integer with a value from 1 to 6, preferably 1 to 4, and wherein 'n' is an integer with a value from 1 to 6 and R is a carboxyl group or hydroxyl group or the salts, ethers, esters thereof present in an effective metal chelating amount.
Claim 6
Dependent Claim
20 words
The chemical treating composition of Claim 4, wherein the metal deactivating agent is a disodium salt of ethylene-diamine tetraacetate dihydrate.
Claim 7
Dependent Claim
45 words
Chemical treating composition of Claim 1, which further includes at least one low temperature antioxidant selected from the group comprised of halogenated hydroxyl ammounium compound, hydrosulfite, bisulfite, phosphorous and phosphite and phosphite-containing reducing agent selected from the group consisting of metal hypophosphites, and ammonium hypophosphite.
Claim 8
Dependent Claim
25 words
Chemical treating composition of Claim 6, wherein the phosphite-containing reducing agent is selected from the group consisting of sodium hypophosphite, potassium hypophosphite and ammonium hypophosphite.
Claim 9
Dependent Claim
45 words
Chemical treating composition of Claim 1, which includes at least one antioxidant effective at higher temperatures selected from the group consisting of alkali metal and alkaline earth metal phenyl phosphinates and phenyl phosphonates, thioethers and polymers thereof and mixtures thereof in an effective antioxidant amount.
Claim 10
Dependent Claim
24 words
The chemical treating composition of Claim 1, wherein the crosslinkable polyurethane is a aliphatic thermoplastic polyurethane polymer present in an oil-in-water emulsion or dispersion.
Claim 11
Dependent Claim
33 words
The chemical treating composition of Claim 1, wherein the organofunctional silane coupling agent is an amino organosilane coupling agent selected from the group consisting of gamma-aminopropyltriethoxy silane, polyaminoalkyl alkoxysilanes and their hydrolyzed derivates.
Claim 12
Dependent Claim
56 words
The chemical treating composition of Claim 1, wherein the acrylic monomer of the copolymer is selected from the group consisting of acrylics, acrylates, alkyl acrylics, alkyl acrylates, alkylmethacrylates, hydroxyalkyl acrylates, hydroxyalkyl methacrylates and mixtures thereof and the polymer matrix resin-reactable monomer is selected from the group consisting of epoxy-containing monomers and nitrile-containing monomers with ethylenic unsaturation.
Claim 13
Dependent Claim
33 words
The chemical treating composition of Claim 11, wherein the copolymer is an acrylic-acrylonitrile copolymer having a ratio of acrylic to acrylonitrile in the range of at least one acrylonitrile monomer per polymer molecule.
Claim 14
Dependent Claim
101 words
The chemical treating composition of claim 1, wherein the acrylic monomer of the copolymer is an ethylenically unsaturated monomer selected from group consisting of: (a) compounds having the formula CH₂=CQZ (Formula 2) wherein 'Q' is a hydrogen atom or methyl and 'Z' is selected from (C≡N) or any nitrile-containing monomers with ethylenic unsaturation including acrylonitriles and methacrylonitrile, and (b) epoxy-containing monomers with ethylenic unsaturation like glycidylacrylate and glycidylmethacrylate where in formula (2) 'Z' would be -(CO₂ - CH₂ - C C)- and there is present a copolymerizable monomer selected from the group consisting of: styrene, butadiene vinyl toluene and alpha-methyl styrene.
Claim 15
Dependent Claim
54 words
The chemical treating composition of claim 11, wherein the copolymer is a self-crosslinking copolymer of at least one addition polymerizable acrylic-type monomer and at least one matrix-resin miscible and reactable monomer selected from the group consisting of nitrile-containing monomer selected from acrylonitrile and methacrylonitrile and C₄-C₄ nitrile containing groups and addition polymerizable epoxy-containing monomer.
Claim 16
Dependent Claim
21 words
The chemical treating composition of Claim 1, wherein the carrier is water in an predominant amount of the chemical treating composition.
Claim 17
Dependent Claim
19 words
The chemical treating composition of Claim 15, wherein the aqueous chemical treating composition is essentially free of fiber lubricant.
Claim 18
Dependent Claim
33 words
The chemical treating composition of Claim 1, wherein the crosslinkable polyurethane polymer and the copolymer are present in the chemical treating composition from the addition of separate oil-in-water emulsions or dispersions containing same.
Claim 19
Dependent Claim
23 words
The chemical treating composition of Claims 1 and 15, which further includes an epoxy-containing polyester processing aid in the aqueous chemical treating composition.
Claim 20
Dependent Claim
45 words
The chemical treating composition of Claim 1, wherein the weight ratio of (a) to (c) ranges from 1: 1 to 4:1 and the amount of the copolymer is in the range of 5 to about 20 weight percent of the solids of the treating composition.
Claim 21
Dependent Claim
46 words
Fibrous reinforcement selected from the group consisting of fibers, bundles of fibers, strands, roving, flakes, and beads treated with the chemical treating composition of any of Claims 1 to 19 to have a thin film over a substantial portion of the surface of the fibrous materials.
Claim 22
Dependent Claim
26 words
Chemically treated glass fibers, wherein the chemical treatment is a dried residue of an aqueous chemical treating composition, according to any of claims 1 to 19.
Claim 23
Dependent Claim
35 words
Chemically treated glass fibers of Claim 21, wherein dried residue produced upon drying the glass fibers with the aqueous chemical treating composition at up to around 141 o C (285 o F) for 11 hours.
Claim 24
Dependent Claim
29 words
The chemically treated glass fibers of Claim 21, having an antistat and additional antioxidant selected from alkali metal or alkaline earth metal phenyl phosphonates present as a secondary coating.
References Cited (Backward Citations)
No citation records indexed.
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