(19) |
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(11) |
EP 0 270 213 A3 |
(12) |
EUROPEAN PATENT APPLICATION |
(88) |
Date of publication A3: |
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02.08.1989 Bulletin 1989/31 |
(43) |
Date of publication A2: |
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08.06.1988 Bulletin 1988/23 |
(22) |
Date of filing: 25.09.1987 |
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(84) |
Designated Contracting States: |
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CH DE ES FR GB LI NL |
(30) |
Priority: |
26.09.1986 US 911678
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(71) |
Applicant: E.I. DU PONT DE NEMOURS AND COMPANY |
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Wilmington
Delaware 19898 (US) |
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(72) |
Inventors: |
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- Andrews, Walter Ronald, Jr.
Richmond
Virginia 23234 (US)
- Day, Fleming Howard
Greenville
North Carolina 27834 (US)
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(74) |
Representative: Jones, Alan John et al |
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CARPMAELS & RANSFORD
43 Bloomsbury Square London, WC1A 2RA London, WC1A 2RA (GB) |
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Remarks: |
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The title of the invention has been amended (Guidelines for Examination in the EPO,
A-III, 7.3). |
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(54) |
Spin finish composition for tyre yarns |
(57) A polyamide yarn having on the surface of the polyamide yarn a hydrophobic organic
ester dip penetration regulator having a melting point greater than 27°C and convertible
by conventional means into a tire cord having low stiffness and high air permeability
and a process for making polymeric tire yarns is disclosed.