(19)
(11) EP 1 870 443 A8

(12) CORRECTED EUROPEAN PATENT APPLICATION
Note: Bibliography reflects the latest situation

(15) Correction information:
Corrected version no 1 (W1 A2)

(48) Corrigendum issued on:
30.06.2010 Bulletin 2010/26

(88) Date of publication A3:
12.08.2009 Bulletin 2009/33

(43) Date of publication:
26.12.2007 Bulletin 2007/52

(21) Application number: 07016770.5

(22) Date of filing: 10.05.2001
(51) International Patent Classification (IPC): 
C09J 183/04(2006.01)
(84) Designated Contracting States:
DE FR GB

(30) Priority: 23.06.2000 US 213700 P
11.08.2000 US 638409

(62) Application number of the earlier application in accordance with Art. 76 EPC:
01933248.5 / 1299498

(71) Applicant: GENERAL ELECTRIC COMPANY
Schenectady, NY 12345 (US)

(72) Inventors:
  • Griswold, Roy, Melvin
    New York 12020 (US)
  • Traver, Frank, John
    New York 12180-9527 (US)
  • Wengrovius, Jeffrey, H.
    New York 12302 (US)
  • Lin, Shaow, Burn
    Michigan 48642 (US)

(74) Representative: Thoma, Michael et al
Lorenz - Seidler - Gossel Widenmayerstraße 23
80538 München
80538 München (DE)

 
Remarks:
This application was filed on 27 - 08 - 2007 as a divisional application to the application mentioned under INID code 62.
 


(54) Silicone pressure sensitive adhesive composition


(57) The present inventions relates to a method for making an article, comprising applying a layer of a silicone composition on at least a portion of at least one surface of a substrate, said silicone composition comprising the condensation reaction product of a silanol-functional silicone resin, said resin comprising M structural units according to the R13SiO1/2, wherein each R1 is independently hydroxy or a monovalent hydrocarbon radical, and Q structural units according to the formula SiO4/2 in a ratio of M units to Q units of less than 1.1:1, a silanolfunctional polydiorganosiloxane gum and a crosslinker, said silicone composition being obtained by a method comprising:
condensing, at an elevated temperature in the presence of a base catalyst, said silanol-functional silicone resin, and
(a) heating a mixture of the resin, gum, crosslinker, base catalyst an an organic solvent to a first elevated temperature to begin condensation of the resin, gum and crosslinker,
(b) adding a molar excess, based on moles of alkoxy groups of the resin, gum and crosslinker of the mixture of step (a), of water to the mixture of step (a),
(c) heating the mixture of step (b) to allow hydrolysis of any remaining alkoxy groups, and
(d) heating the mixture of step (c) to a second elevated temperature to drive condensation of the resin, gum and crosslinker toward completion.