EP0239915A2
Expired / Lapsed
EP
⏱️ 0.0 years remaining
Process for producing a modified fibrous material useful for reinforcing rubber articles
Assignee: Teijin Ltd
•
Filing: 1987-03-24
•
Granted: —
•
Expires: 2007-03-24
Abstract
Abstract A modified fibrous material useful as a reinforcing mat- rerial for rubber articles is produced by applying a cold plasma treatment to a fibrous material comprising at least one type of synthetic fibers selected from aromatic polyamide fibers and polyester fibers under a reduced pressure; by applying an ion-plating treatment with a polyamide vapor to the resultant cold plasma-treated fibrous material under a reduced pressure; by impregnating the resultant ion-plated fibrous material with an RFL adhesive composition comprising a resorcinol-formaldehyde precondensation product and a rubber latex; and by curing the adhesive composition in the fibrous material.
Inventors
- 👤 Masashi Furukawa
- 👤 Tadahiko Takata
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-03 03:34
CPC Classifications
C; C08; C08J; C08J5/00; C08J5/04; C08J5/06; D; D06; D06M; D06M10/00; D06M10/04; D06M10/08; D06M10/10; C08J2321/00; Y; Y10; Y10T; Y10T428/00; Y10T428/29; Y10T428/2913; Y10T428/2933; Y10T428/2964; Y10T428/2967; Y10T428/2969
Claims Analysis
Total Claims: 17
Claim 1
Independent Claim
85 words
A process for producing a modified fibrous material useful for reinforcing rubber articles, comprising the steps of: applying a cold plasma treatment to a fibrous material comprising at least one type of synthetic fibers selected from aromatic polyamide fibers and polyester fibers, under a reduced pressure; applying an ion-plating treatment with a polyamide vapor to the resultant cold plasma-treated fibrous material under a reduced pressure; and impregnating the resultant ion-plated fibrous material with an adhesive composition comprising a resorcinol-formaldehyde precondensation product and a rubber latex.
Claim 2
Dependent Claim
85 words
A process for producing a modified fibrous material useful for reinforcing rubber articles, comprising the steps of: applying a cold plasma treatment to a fibrous material comprising at least one type of synthetic fibers selected from aromatic polyamide fibers and polyester fibers, under a reduced pressure; applying an ion-plating treatment with a polyamide vapor to the resultant cold plasma-treated fibrous material under a reduced pressure; and impregnating the resultant ion-plated fibrous material with an adhesive composition comprising a resorcinol-formaldehyde precondensation product and a rubber latex.
Claim 3
Dependent Claim
25 words
The process as claimed in claim 1, wherein the aromatic polyamide fibers in the fibrous material are selected from poly-p-phenylene terephthalamide fibers and poly-p-benzamide fibers.
Claim 4
Dependent Claim
149 words
The process as claimed in claim 1, wherein the aromatic polyamide fibers in the fibrous material comprises an aromatic polyetheramide having repeating units of the formulae (I), (II), (IV), and optionally, (III): and wherein Ar l , Ar2 and Ar 3 respectively represent, independently from each other, a member selected from the group consisting of substituted and unsubstituted divalent aromatic hydrocarbon ring residues having two bonds extending in coaxial or parallel relationship to each other and substituted and unsubstituted divalent aromatic heterocyclic ring residues having two bonds located on two atoms spaced a largest distance in the ring, Ar4 and Ar 5 respectively represent, independently from each other, a member selected from the group consisting of p-phenylene radical and m-phenylene radical, and R 1 , R 2 , R , R and R 5 respectively represent, independently from each other, an alkyl radical having 1 to 5 carbon atoms.
Claim 5
Dependent Claim
69 words
The process as claimed in claim 3, wherein the sum of the molar amounts of the repeating units of the formula (I) and (IV) is substantially equal to that of formula (II), the repeating units of the formula (III) are in an amount of 0 to 90 molar%, and the repeating units of the formula (IV) are in an amount of 5 to 50 molar%, in the aromatic polyetheramide.
Claim 6
Dependent Claim
28 words
The process as claimed in claim 1, wherein the polyester fibers in the fibrous material are selected from polyethylene terephthalate fibers, polybutylene terephthalate fibers and polyethylene naphthalate fibers.
Claim 7
Dependent Claim
39 words
The process as claimed in claim 1, wherein the cold plasma treatment is carried out in an atmosphere containing at least one member selected from the group consisting of oxygen, nitrogen, ammonia, nitrogen monoxide, argon, helium, and tetrafluoromethane gases.
Claim 8
Dependent Claim
23 words
The process as claimed in claim 1, wherein the cold plasma treatment is carried out at a temperature of from 20°C to 200°C.
Claim 9
Dependent Claim
25 words
The process as claimed in claim 1, wherein the cold plasma treatment is carried out under a pressure of from 10 -5 to 10 Torr.
Claim 10
Dependent Claim
35 words
The process as claimed in claim 1, wherein the polyamide vapor to be used in the ion-plating treatment consists of at least one member selected from poly- E - capramide, polyhexamethylene adipamide, and polyhexamethylene sebacamide.
Claim 11
Dependent Claim
24 words
The process as claimed in claim 1, wherein the ion-plating treatment is carried out under a reduced pressure of 10 -5 to 10 Torr.
Claim 12
Dependent Claim
26 words
ll. The process as claimed in claim 1, wherein the ion-plated polyamide deposited on the fibrous material is in a thickness of 0.05 to 1 um.
Claim 13
Dependent Claim
26 words
The process as claimed in claim 1, wherein in the resorcinol-formaldehyde precondensation product, the resorcinol and formaldehyde is in a molar ratio of 1:0.1 to 1:8.
Claim 14
Dependent Claim
31 words
The process as claimed in claim 1, wherein in the adhesive composition, the rubber is selected from natural rubber, styrene-butadiene copolymer rubber, vinyl pyridine-styrene-butadiene terpolymer rubber, nitrile rubber, and chloroprene rubber.
Claim 15
Dependent Claim
28 words
The process as claimed in claim 1, wherein the resorcinol-formaldehyde precondensation product and the rubber latex are in a dry solid weight ratio of from 1:1 to 1:15.
Claim 16
Dependent Claim
28 words
The process as claimed in claim 1, wherein the adhesive composition is impregnated in an amount of 0.1 to 10% by dry solid weight in the fibrous material.
Claim 17
Dependent Claim
27 words
The process as claimed in claim 1, wherein the adhesive composition impregnated in the fibrous material is dried and cured at a temperature of 120°C or more.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
Maintenance schedule is calculated for granted US utility patents.