Resin composition for building material and insulating glass

Abstract

An insulating glass comprising two or more glass sheets which are arranged to face one another to form an air space layer therebetween by a spacer made of a resin having a JIS A hardness of from 10 to 90 at 25° C., prepared by using a thermoplastic resin composition comprising a butyl type rubber and a crystalline polyolefin, wherein the proportion of the butyl type rubber is from 50 to 98 wt %, and the proportion of the crystalline polyolefin is from 2 to 50 wt %, based on the total amount of the two.

1 . A resin composition for building material, which comprises a butyl type rubber and a crystalline polyolefin, wherein the proportion of the butyl type rubber is from 50 to 98 wt %, and the proportion of the crystalline polyolefin is from 2 to 50 wt %, based on the total amount of the two.  
     
     
         2 . A resin composition for building material, which comprises a butyl type rubber, a crystalline polyolefin and an inorganic filler, wherein the proportion of the butyl type rubber is from 50 to 98 wt %, and the proportion of the crystalline polyolefin is from 2 to 50 wt %, based on the total amount of the butyl type rubber and the crystalline polyolefin, and the proportion of the inorganic filler is at most 200 parts by weight per 100 parts by weight of the sum of the butyl type rubber and the crystalline polyolefin.  
     
     
         3 . The resin composition for building material according to  claim 1  or  2 , wherein the crystalline polyolefin is at least one polymer selected from polyethylene, polypropylene and their modified products.  
     
     
         4 . An insulating glass comprising two or more glass sheets which are arranged to face one another as spaced by a spacer to form an air space layer therebetween, wherein said spacer is made of a thermoplastic resin composition having a JIS A hardness of from 10 to 90 at 25° C.  
     
     
         5 . The insulating glass according to  claim 4 , wherein said spacer is made of a thermoplastic resin composition having a creep compliance J, as an index for creep characteristics, of from 1×10 −10  (cm 2 /dyne) to 1×10 −5  (cm 2 /dyne) as measured after 5 minutes from initiation of the measurement in a shear deformation mode at 40° C.  
     
     
         6 . The insulating glass according to  claim 4  or  5 , wherein said thermoplastic resin composition comprises at least two types of thermoplastic resins, one of which is a hot-melt moldable rubber or elastomer, and a drying agent.  
     
     
         7 . The insulating glass according to  claim 4  or  5 , wherein said thermoplastic resin composition comprises the following components:  
       
         
           
                 
                 
                 
               
                     
                     
                 
                     
                     
                 
                     
                   Hot-melt moldable rubber or elastomer 
                   10 to 80 wt % 
                 
                     
                   Thermoplastic resin other than said 
                    0 to 50 wt % 
                 
                     
                   ruber or elastomer 
                 
                     
                   Tackifier 
                    0 to 15 wt % 
                 
                     
                   Drying agent and additives 
                   10 to 60 wt % 
                 
                     
                     
                 
                     
                     
                 
             
                
                
               
               
                
                
                
                
                
                
                
               
            
           
         
       
     
     
         8 . The insulating glass according to  claim 4  or  5 , wherein said thermoplastic resin composition comprises a butyl type rubber and a crystalline polyolefin, wherein the proportion of the butyl type rubber is from 50 to 98 wt %, and the proportion of the crystalline polyolefin is from 2 to 50 wt %, based on the total amount of the two.  
     
     
         9 . The insulating glass according to  claim 4  or  5 , wherein said thermoplastic resin composition comprises a butyl type rubber, a crystalline polyolefin and an inorganic filler, wherein the proportion of the butyl type rubber is from 50 to 98 wt %, and the proportion of the crystalline polyolefin is from 2 to 50 wt %, based on the total amount of the butyl type rubber and the crystalline polyolefin, and the proportion of the inorganic filler is at most 200 parts by weight per 100 parts by weight of the sum of the butyl type rubber and the crystalline polyolefin.  
     
     
         10 . The insulating glass according to  claim 8  or  9 , wherein the crystalline polyolefin is at least one polymer selected from polyethylene, polypropylene and their modified products.  
     
     
         11 . The insulating glass according to any one of  claims 7  to  10 , wherein the moisture permeation constant of the thermoplastic resin other than said rubber or elastomer, or the moisture permeation constant of the crystalline polyolefin, is at most 300×10 −13  cm 3 ·cm/cm 2 ·sec·Pa.  
     
     
         12 . The insulating glass according to any one of  claims 6  to  11 , wherein the moisture permeation constant of said hot-melt moldable rubber or elastomer, or the moisture permeation constant of the butyl type rubber, is at most 3000×10 −13  cm 3 ·cm/cm 2 ·sec·Pa.  
     
     
         13 . The insulating glass according to any one of  claims 4  to  12 , wherein the moisture permeation constant of said thermoplastic resin composition is at most 5000×10 −13  cm 3 ·cm/cm 2 ·sec·Pa.