Method of manufacturing laminated safety glass
First Claim
1. In a method for manufacturing a laminated safety glass wherein a pair of silicate glass sheets are bonded to opposed sides of a plasticized plastic film at an elevated temperature, the improvement wherein said plasticized plastic film is a plasticized polyvinyl chloride containing film of a high molecular weight vinyl chloride homopolymer, copolymer or graft polymer and said plasticized film is bonded to said pair of silicate glass sheets with a bonding agent consisting essentially of a functional silane, the bonding being performed at a temperature in the range of 120°
- to 200°
C.
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Accused Products
Abstract
A laminated safety glass comprising a layer of a silicate glass, to which is bonded a layer of a plasticized plastic sheet containing polyvinyl chloride, said laminate containing therein an organofunctional silane and a process for preparing such laminated safety glass by unilateral or bilateral bonding of one or more silicate glass sheets with a plasticized polyvinyl chloride plastic film at an elevated temperature wherein the bonding is effected with the aid of a silicon-organo-functional silane and the bonding is effected at 120°-200° C.
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Citations
35 Claims
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1. In a method for manufacturing a laminated safety glass wherein a pair of silicate glass sheets are bonded to opposed sides of a plasticized plastic film at an elevated temperature, the improvement wherein said plasticized plastic film is a plasticized polyvinyl chloride containing film of a high molecular weight vinyl chloride homopolymer, copolymer or graft polymer and said plasticized film is bonded to said pair of silicate glass sheets with a bonding agent consisting essentially of a functional silane, the bonding being performed at a temperature in the range of 120°
- to 200°
C. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 25, 26, 27, 28, 29)
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18. A process according to claim 5 wherein said silane is selected from the group consisting of γ
- -aminopropyltrialkoxysilane, γ
-aminoethyltrialkoxysilane, β
-aminoethyl-γ
-oxypropylmethyldialkoxysilane and polyaminotrialkoxysilane.
- -aminopropyltrialkoxysilane, γ
- 19. A process according to claim 7 wherein said silane has the formula
- space="preserve" listing-type="equation">HN[CH.sub.2 --CH.sub.2 --CH.sub.2 --Si(OR).sub.3 ].sub.2 IV
wherein R is a branched or unbranched C1 -C8 alkyl group which can be interrupted by oxygen atoms in the chain and the hydrogen atoms of the amino group can be replaced by an amino or polyamino alkyl moiety.
- to 200°
- 20. A process according to claim 1 wherein said silane is a silicon-functional silane and has the formula
- space="preserve" listing-type="equation">R.sub.n --Si--R'"'"'.sub.4-n
wherein each R radical represents the same or different saturated straight or branched alkyl moiety of 1 to 10 carbon atoms, R'"'"' represents a halogen or identical or different saturated alkoxy group of 1 to 8 carbon atoms which can be interrupted by a hetero atom and n is equal to 1 to 3.
- space="preserve" listing-type="equation">NH.sub.2 --(CH.sub.2).sub.n --Si(OR).sub.3 III
- space="preserve" listing-type="equation">HN[CH.sub.2 --CH.sub.2 --CH.sub.2 --Si(OR).sub.3 ].sub.2 IV
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22. A laminate comprising a pair of silicate glass sheets bonded to a plasticized plastic sheet of a vinyl chloride containing polymer, said plasticized sheet containing a functional silane therein.
- View Dependent Claims (23, 24, 30, 31, 32, 33, 34, 35)
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31. A laminate according to claim 22 wherein said polyvinyl chloride sheet is a sheet of a polyvinyl chloride homopolymer, a sheet of a polyvinyl chloride copolymer or a sheet of a graft polymer containing polyvinyl chloride.
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32. A laminate according to claim 31 wherein said silane is present in an amount of 0.01 to 5 weight percent and said silane is disposed at the interface of said plastic sheet and said silicate glass.
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33. A laminate according to claim 31 wherein said silane is disposed within the plastic sheet and is present therein in an amount of 0.1 to 5 percent by weight.
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34. A laminate according to claim 22, containing 17% to 45% by weight plasticizer.
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35. A laminate according to claim 34, containing 20% to 37% by weight plasticizer.
Specification