Silane compound and compositions containing same
AssigneeSynthomer Sdn. Bhd.
InventorsZhenli WEI, Chi Hoong CHAN, Yi-fan GOH
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Abstract
The present invention relates to a polymer latex composition, to a method for the preparation of such polymer latex composition, to the use of said polymer latex composition, to a compounded latex composition comprising said polymer latex composition, to a method for making dip-molded articles, to a method for making elastomeric films and articles, to a method for repairing of reforming an elastomeric film or article and to articles made by using said polymer latex composition.
Claims30
A polymer latex composition for the preparation of elastomeric films comprising:
- (a) particles of a latex polymer obtained by free-radical emulsion polymerization of a composition comprising ethylenically unsaturated monomers, the latex polymer comprising a functional group (A);
- and
- (b) a silane compound selected from the compounds of Formula I, II, oligomers thereof or combinations of any of the foregoing:
- wherein
- X is a functional group capable to form a bond with the functional group (A) of the latex polymer (a);
- R1 is a linking group between the functional group X and the silicon atom or R1 is a bond;
- R2 independently is a hydrolysable group or a non-hydrolysable group;
- at least one of R2 is a hydrolysable group and at least one of R2 is a non-hydrolysable group;
- wherein
- Y is O, S, NH or NR3;
- wherein R3 is a linear or branched, substituted or unsubstituted alkyl or alkenyl;
- R1 is a linking group between the functional group Y and the silicon atom;
- R2 independently is a hydrolysable group or a non-hydrolysable group;
- at least one of R2 is a non-hydrolysable group.
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A method for preparing a polymer latex composition comprising:
- (i) polymerizing in an emulsion polymerization process a monomer composition comprising ethylenically unsaturated monomers for latex polymer (a) comprising at least one monomer resulting after polymerization in a functional group (A) to obtain a latex comprising particles of latex polymer (a) comprising functional groups (A);
- and
- (ii) adding a silane compound (b) selected from the compounds of Formula I, II, oligomers thereof or combinations of any of the foregoing:
- wherein
- X is a functional group capable to form a bond with the functional group (A) of the latex polymer (a);
- R1 is a linking group between the functional group X and the silicon atom or R1 is a bond;
- R2 independently is a hydrolysable group or a non-hydrolysable group;
- wherein at least one of R2 is a hydrolysable group and at least one of R2 is a non-hydrolysable group;
- wherein
- Y is O, S, NH or NR3;
- wherein R3 is a linear or branched, substituted or unsubstituted alkyl or alkenyl;
- R1 is a linking group between the functional group Y and the silicon atom;
- R2 independently is a hydrolysable group or a non-hydrolysable group;
- wherein at least one of R2 is a non-hydrolysable group;
- and
- (iii) optionally adding a silane compound (c) different to silane compound (b), wherein silane compound (c) is selected from the compounds of Formula III, IV, oligomers thereof or combinations of any of the foregoing:
- wherein
- Z is a functional group capable to form a bond with the functional group (A) of the latex polymer (a);
- Ra is a linking group between the functional group Z and the silicon atom or Ra is a bond;
- Rb is a hydrolysable group;
- wherein
- Z′ is O, S, NH or NR3;
- wherein R3 is a linear or branched, substituted or unsubstituted alkyl or alkenyl;
- Ra is a linking group between the functional group Z′ and the silicon atom;
- Rb is a hydrolysable group.
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Dependencies are inferred from the claim text.