초록 ▼

A polymeric laminate for use with a glass layer in a laminated bilayer or anti-lacerative shield application comprises a first layer of moisture tolerant plasticized polyvinyl butyral containing (a) adhesion control agent(s) and (b) residual hydroxyl content which optimize glass adhesion and optical

A polymeric laminate for use with a glass layer in a laminated bilayer or anti-lacerative shield application comprises a first layer of moisture tolerant plasticized polyvinyl butyral containing (a) adhesion control agent(s) and (b) residual hydroxyl content which optimize glass adhesion and optical performance over a range of moisture contents in the first layer likely to be encountered in use, i.e. 0.2 to 0.5 weight % and 2 to 2.8 weight %, such first layer being in face to face contact with a second layer of a clear polymer film or coating having a combination of performance properties desirable for these applications. Preferred second layers are biaxially stretched polyester and thermoset aliphatic polyurethane.

대표청구항 ▼

A polymeric laminate comprising a first layer of plasticized polyvinyl butyral in face to face contact with a second layer comprising a clear polymer film or coating, said first layer containing about 0.01 to 0.1 weight percent, based on polyvinyl butyral, of an adhesion control agent other than wat

A polymeric laminate comprising a first layer of plasticized polyvinyl butyral in face to face contact with a second layer comprising a clear polymer film or coating, said first layer containing about 0.01 to 0.1 weight percent, based on polyvinyl butyral, of an adhesion control agent other than water, said polyvinyl butyral having a hydroxyl content, calculated as polyvinyl alcohol, of 17 to 22 weight percent; said laminate possessing the following properties at a water content in the first layer of: (a) 0.2 to 0.5 weight percent (i) peel adhesion to glass at 21°C of less than 65 newtons per cm; (b) 2 to 2.8 weight percent (i) peel adhesion to glass at 21°C of at least 5 newtons per cm; and (ii) less than 3 percent optical haze.