Bonded vehicular glass assemblies utilizing two-component urethanes adhesive

• US 20040214947A1
• Filed: 05/17/2004
• Published: 10/28/2004
• Est. Priority Date: 04/11/1995
• Status: Active Grant

• Current Assignee: Magna Mirrors of America Incorporated (Magna International Incorporated)
• Original Assignee: Donnelly Corporation (Magna International Incorporated)
• Inventors: Lewno, Jeffrey A.
• Granted Patent: US 7,332,225 B2
• Time in Patent Office: Days
• US Class Current: 524/729
• CPC Class Codes: B32B 17/10036 comprising two outer glass sheets
• CPC Class Codes: B32B 17/10366 Reinforcements of the laminated safety glass or glazing against impact or intrusion containing metal wires for reinforcement B32B17/10412
• CPC Class Codes: B60J 1/14 with pivotal or rotary movement
• CPC Class Codes: B60J 1/16 slidable
• CPC Class Codes: B60J 1/1853 horizontally in direction transverse to vehicle longitudinal axis
• CPC Class Codes: B60J 1/1884 about a horizontal axis
• CPC Class Codes: B60J 10/30 characterised by the fastening means
• CPC Class Codes: B60J 10/34 using adhesives
• CPC Class Codes: B60J 10/70 specially adapted for windows or windscreens
• CPC Class Codes: B60J 10/74 for sliding window panes, e.g. sash guides
• CPC Class Codes: B60J 10/82 for movable panels in roofs
• CPC Class Codes: Y10T 428/31601 Quartz or glass

Abstract

Bonded vehicular glass assemblies utilizing two-component urethane adhesives to attach dynamic load-bearing attachment members to glass substrates to form a joint suitable for use on a vehicle, and related methods of forming are described herein. In addition, methods of attaching components to glass by use of these adhesives are disclosed. The two-component urethane adhesives utilized in this invention have been found to provide surprisingly strong bonds between glass and other materials which meet or exceed OEM requirements, and be particularly well suited for use in vehicles.

Claims

1-130. -130. (canceled).

131. A vehicular window assembly suitable for use in a vehicle, said window assembly comprising:

a glass panel having a first surface and an opposing second surface;

an attachment member;

said attachment member joined at said first surface of said panel by an adhesive layer;

said adhesive consisting essentially of a two-component urethane, said two-component urethane adhesive disposed between said first surface of said glass panel and said attachment member, said layer of two-component urethane adhesive cured to form a load bearing joint suitable for use on the vehicle;

said layer of cured urethane adhesive bonding said attachment member to said first surface of said glass panel prior to installation of said assembly in the vehicle and without exposure of said bonded attachment member at said second surface of said panel;

said two-component urethane adhesive comprising a) an isocyanate component, b) a polyol component, c) a filler, and d) a catalyst.

132. The vehicular window assembly of claim 131 wherein said filler comprises at least one of a silicate, a silica and a carbonate.

133. The vehicular window assembly of claim 132 wherein said silicate comprises magnesium.

134. The vehicular window assembly of claim 132 wherein said silica comprises crystalline silica.

135. The vehicular window assembly of claim 132 wherein said silica comprises course silica.

136. The vehicular window assembly of claim 132 wherein said carbonate comprises calcium carbonate.

137. The vehicular window assembly of claim 132 wherein said filler is about 15% to about 50% of the total weight of said polyol and said isocyanate components.

138. The vehicular window assembly of claim 131 wherein said filler comprises talc.

139. The vehicular window assembly of claim 131 wherein said filler comprises a combination of talc and silica.

140. The vehicular window assembly of claim 131 wherein said isocyanate component comprises a filler.

141. The vehicular window assembly of claim 140 wherein the amount of said filler is about 20% to about 30% of the total weight of said polyol and said isocyanate components.

142. The vehicular window assembly of claim 131 wherein said catalyst comprises an amine-based catalyst.

143. The vehicular window assembly of claim 131 wherein said catalyst comprises at least one of a tertiary amine and an organotin compound.

144. The vehicular window assembly of claim 131 wherein said catalyst comprises at least one of 1,4-diazabicyclo[2,2,2]octane (triethylene diamine), N-methylmorpholine, N-ethylmorpholine, triethylamine, N-methyldiethanolamine, N,N-dimethylaminoethanol, N,N-diethylaminoethanol, triethanolamine, tetramethylguanidine, N,N,N′

,N′

-tetramethylethylenediamine, N,N-dimethyl C₁₀-C₁₆ amine, N,N-dimethylcyclohexylamine, N,N-dimethylpiperazine, 1,2,4-trimethylpiperazine, bis-(2-hydroxypropyl)-2-methylpiperazine, and bis-(beta-dimethylaminoethyl) ether.

145. The vehicular window assembly of claim 143 wherein said organotin compound comprises at least one of stannous octoate, stannous oleate, dibutytin dilaurate, and dibutyltin diacetate.

146. The vehicular window assembly of claim 131 wherein said isocyanate component comprises a polyurethane prepolymer.

147. The vehicular window assembly of claim 146 wherein said polyurethane prepolymer is formed by reaction of diphenylmethane diisocyanate (MDI) with a combination of a polyol and a diamine.

148. The vehicular window assembly of claim 131 wherein said polyol comprises a polyurethane prepolymer.

149. The vehicular window assembly of claim 131 wherein said two-component urethane adhesive comprises an adhesion promoter.

150. The vehicular window assembly of claim 149 wherein said adhesion promoter comprises at least one silane.

151. The vehicular window assembly of claim 150 wherein said at least one silane comprises an amino silane.

152. The vehicular window assembly of claim 150 wherein said adhesion promoter comprises a diamino-tri-methoxy silane.

153. The vehicular window assembly of claim 149 wherein said adhesion promoter comprises at least one of a titanium and a zirconium coupling agent.

154. The vehicular window assembly of claim 131 wherein said polyol component comprises at least one plural amine compound.

155. The vehicular window assembly of claim 154 wherein said plural amine compound comprises about 2% to about 20% by weight of said polyol component.

156. The vehicular window assembly of claim 154 wherein said plural amine compound comprises about 5% to about 10% by weight of said polyol component.

157. The vehicular window assembly of claim 154 wherein said plural amine compound is selected from aminated sucrose and aminated pentaerythritrol.

158. The vehicular window assembly of claim 131 wherein said polyol component is selected from a diol, a triol, a pentol, a hexol, a heptol, an octol, propylene glycol, ethylene glycol, glycerine, trimethylolpropane, 1,2,6-hexanetriol, pentaerythritrol, methyl glucoside, sorbitol, sucrose, ethylene, diethylene, dipropylene, a glycerine triol, polyether and a polyester polyol.

159. The vehicular window assembly of claim 131 wherein said two-component urethane adhesive comprises at least one of an ultraviolet light stabilizer, a chain extender, a cross-linking agent, a pigment, a colorant, a diluent, a thixotropic agent, a thermal stabilizer, an antioxidant, and a surfactant.

160. The vehicular window assembly of claim 159 wherein said chain extender is selected from ethylene glycol, butane diol, ethylene diamine, and diethyl toluene diamine.

161. The vehicular window assembly of claim 159 wherein said cross-linking agent is selected from oxypropionated sucrose, an aliphatic amine, a pentarythrathol, an aminated polyol, 1,2,6-hexanetriol, 1,1,3-trimethylolpropane, and glycerine.

162. The vehicular window assembly of claim 131 wherein said cure of said joint is accelerated by at least one of a) heating, and b) a chemical agent.

163. The vehicular window assembly of claim 162 said cure of said joint is accelerated by heating with at least one of induction heating and infrared heating.

164. The vehicular window assembly of claim 131 further comprising a glass frit layer disposed on said glass panel, said glass frit layer being disposed between said first surface of said glass panel and said layer of cured adhesive.

165. The vehicular window assembly of claim 131 wherein said adhesive layer is disposed between said attachment member and said glass panel and has a thickness from about 0.01 mm to about 4.0 mm.

166. The vehicular window assembly of claim 131 wherein said attachment member is selected from the group consisting of a mounting member, a hinge, a clevise, a latch, a lift bracket, a division bar, a positionable member, a guide track, a handle, a guide pin, strut-mounting hardware, a striker, a strut, power-mounting hardware, a track member, a rail, a latch member, an antenna, a wiper mount, a sealing member, a cosmetic article, a pin component, and a hinge member.

167. The vehicular window assembly of claim 131 wherein said assembly comprises a movable vehicular window assembly.

168. The vehicular window assembly of claim 131 wherein said attachment member comprises a hinge.