Patent application number | Description | Published |
20080203593 | Polyvinyl Acetal-Containing Granulate, Method for the Production and the Utilization Thereof - The invention relates to a method for the production of a granulate containing at least one polyvinyl acetal, wherein a composition containing a polyvinyl acetal is transformed into molten state and granulated in accordance with the desired grain size. The invention also relates to a granulate produced according to said method and to the utilization of the inventive granulate. | 08-28-2008 |
20090068914 | NONWOVEN FABRICS AND LAMINATES MADE BY USING THE SAME - A nonwoven fabric containing a polyvinyl butyral fiber is provided. In particular, continuous fiber nonwoven fabrics, such as a melt-blown nonwoven fabric and a spunbonded nonwoven fabric, are preferred. By laminating a plurality of layers via an adhering layer made of such a nonwoven fabric and then heating, a laminate is obtained by a simple process. In particular, an interior material in which an inorganic fiber layer, a foam layer and a surface material layer are adhered together via the aforementioned type of adhering layers is a desirable embodiment. Such an interior material is excellent in rigidity, sound absorbency and thermal deformation resistance, and therefore is useful as an interior material to be used for cars, railway vehicles, vessels, and the like. | 03-12-2009 |
20100028642 | Multilayer Films Or Plasticizer-Containing Polyvinyl Acetal With Sound-Absorbing Properties - An interlayer film for laminated glass with sound-absorbing properties contains at least two individual films, wherein the first individual film comprises a polyvinyl acetal with a portion of polyvinyl acetate groups of 0.1 to 11 mol % and a second individual film comprises a polyvinyl acetal with a portion of polyvinyl acetate groups of between 5 and 8 mol %. | 02-04-2010 |
20100124647 | INTERLAYER FILMS FOR LAMINATED GLAZING CONTAINING SILICA WITH SPECIFIC REFRACTIVE INDEX - Interlayer films useful for laminated glass contain a polyvinyl acetal (A), at least on plasticizer (B), fumed silica (C) and at least one basic compound (D), wherein the difference of refractive index between fumed silica (C) and plasticized polyvinyl acetal (A+B) is 0.015 or less, and the weight ratio of C/(A+B) is 2.7-60/100. | 05-20-2010 |
20100193023 | PHOTOVOLTAIC MODULES COMPRISING PLASTICIZED FILMS BASED ON POLYVINYL ACETAL HAVING A HIGH SPECIFIC RESISTANCE - Plasticizer-containing films based on polyvinyl acetal having a glass transition temperature Tg of at least 20° C. are useful for the production of photovoltaic modules. The films preferably have a plasticizer content of a maximum of | 08-05-2010 |
20100193024 | PHOTOVOLTAIC MODULES COMPRISING PLASTICIZED FILMS HAVING A LOW MOISTURE ABSORPTION - Plasticizer-containing films based on polyvinyl acetals having a polyvinyl alcohol content of less than 20% by weight for the production of photovoltaic modules exhibit less water absorption at the edges of the modules. The films preferably have a glass transition temperature Tg of at least 20° C. and/or a plasticizer content of a maximum of 26% by weight. | 08-05-2010 |
20100206374 | PLASTICIZED FILMS BASED ON POLYVINYL ACETAL HAVING AN INCREASED GLASS TRANSITION TEMPERATUARE AND IMPROVED FLOW PROPERTIES - Plasticizer-containing films of polyvinyl acetal having a plasticizer content of a maximum of 26% by weight and containing a mixture of at least one high-viscosity polyvinyl acetal having a viscosity of 40-300 mPas and at least one low-viscosity polyvinyl acetal having a viscosity of 5-500 mPas are suitable for the production of photovoltaic modules. | 08-19-2010 |
20100307585 | PHOTOVOLTAIC MODULES WITH FILMS CONTAINING PLASTICISERS HAVING LOW TENDENCY TO CREEP - The invention relates to the use of films containing plasticiser and based on polyvinyl acetal with a polyvinyl alcohol content in the polyvinyl acetal of less than 18% by weight and low creep tendency to produce photovoltaic modules. | 12-09-2010 |
20110155205 | Polyvinyl acetal with high flowability and plasticizer-containing films produced therewith - The invention relates to polyvinyl acetals obtainable by reacting polyvinyl alcohol with at least one aldehyde with a degree of acetalisation of at least 75 mol %, characterised by an OH blockiness of the polyvinyl acetal, defined as a quotient from the number of methylene groups of two adjacent alcohol sequences (VV) and the sum of the number of methylene groups of adjacent alcohol/acetal sequences and acetal/acetal sequences (VB+BB), of more than 0.151, as well as a process for the preparation thereof. | 06-30-2011 |
20120224249 | ION-CONDUCTIVE THERMOPLASTIC COMPOSITION, ELECTROCHROMIC COMPOSITE SYSTEM AND PROCESS FOR PRODUCING ION-CONDUCTIVE FOIL - An ion-conductive thermoplastic compositions contains a partially acetalated polyvinyl alcohol, at least one support electrolyte and at least one plasticizer. The partially acetalated polyvinyl alcohol contains two different acetal units. Electrochromic laminated glass systems produced using the ion-conductive compositions and a method for producing the systems are also provided. | 09-06-2012 |
20120225287 | Composite Glazing Having Films Containing Softening Agents Having Low Tendency To Creep - Composite glass laminates having low tendency to creep contain a softening agent-containing polyvinyl acetal film wherein the polyvinyl acetal has a polyvinyl alcohol content of 12 to 16 weight percent, a molecular weight greater than 110,000 g/mol, and a solution viscosity of more than 80 mPas. | 09-06-2012 |
20130022824 | High-Strength Film Laminates Having Layers Of Plasticizer-Containing Polyvinyl (N)Acetal and Plasticizer-Containing Polyvinyl (Iso)Acetal - The invention relates to film laminates, formed from at least three layers A, B and C, each layer containing at least one plasticizer and at least one polyvinyl acetal, wherein, at least one of the layers A, B or C contains at least one polyvinyl (iso)acetal having a mean degree of polymerisation of less than 3000, 10 to 25% by weight of polyvinyl alcohol groups and a proportion 50 to 80% by weight of polyvinyl (iso)acetal groups, and wherein layer B has a plasticizer content of less than 32% by weight. The film laminates can be used for the production of glass/film laminate/glass composites for motor vehicles, aircraft, ships, architectural glazings, façade components, or for the production of photovoltaic modules. | 01-24-2013 |
20130022825 | Films Made Of Plasticizer-Containing Polyvinyl (Iso)Acetal - A film contains a mixture of at least one non-aromatic plasticizer having a polarity, expressed by the formula 100×O/(C+H), of less than/equal to 9.4 wherein O, C and H represent the number of oxygen, carbon and hydrogen atoms in the respective molecule, and a polyvinyl (iso)acetal having a proportion of polyvinyl (iso)acetal groups of 60 to 85% by weight and a proportion of polyvinyl alcohol groups of 14 to 40% by weight. The films may be used in the automotive industry, in windscreens, in the field of architecture, in façade components, or for the production of photovoltaic modules. | 01-24-2013 |
20130189527 | Film Laminates Having Damping Properties Containing A Sub-Layer Made of Plasticizer-Containing Polyvinyl (Iso)Acetal - Film laminates are formed from at least three layers A, B and C, each containing at least one plasticizer and at least one polyvinyl acetal, wherein two outer layers A and C each contain at least one identical or different polyvinyl acetal having a proportion of polyvinyl alcohol groups of 18.5 to 23% by weight, at least one inner layer B contains a polyvinyl acetal having a proportion of polyvinyl alcohol groups of 12 to 18% by weight, and at least one of the layers A, B or C contains at least one polyvinyl (iso)acetal. The film laminates can be used for the production of glass/film laminate/glass composites for motor vehicles, aircraft, ships, architectural glazings, façade components, or for the production of photovoltaic modules. | 07-25-2013 |
20140100333 | POLYVINYL ACETAL WITH HIGH FLOWABILITY AND PACTICIZER-CONTAINING FILMS PRODUCED THEREWITH - The invention relates to polyvinyl acetals obtainable by reacting polyvinyl alcohol with at least one aldehyde with a degree of acetalisation of at least 75 mol %, characterised by an OH blockiness of the polyvinyl acetal, defined as a quotient from the number of methylene groups of two adjacent alcohol sequences (VV) and the sum of the number of methylene groups of adjacent alcohol/acetal sequences and acetal/acetal sequences (VB+BB), of more than 0.151, as well as a process for the preparation thereof. | 04-10-2014 |