Surface treatment of plastic material with an organic polymerisable and/or crosslinkable composition having reactive functions

The process as claimed in the preceding claim, characterized in that the cationic entity of the cationic initiator is selected from onium salts of formula (VI):

• [(R10)n-A-(R11)m]+ (VI)
• in which:
• A represents an element from Groups 15 to 17, such as, for example:
• I, S, Se, P or N,
• R10 represents a C6-C20 carbocyclic or heterocyclic aryl radical, it being possible for said heterocyclic radical to comprise nitrogen or sulfur as heteroelements,
• R11 represents R10 or a linear or branched C1-C30 alkyl or alkenyl radical;
• said R10 and R11 radicals optionally being substituted by a C1-C25 alkoxy, C1-C25 alkyl, nitro, chloro, bromo, cyano, carboxyl, ester or mercapto group,
• n is an integer ranging from 1 to v+1, v being the valency of the element A,
• m is an integer ranging from 0 to v−1, with n+m=v+1.

The process as claimed in any one of the preceding claims, characterized in that the organic matrix A additionally comprises poly-organosiloxanes A4), which are composed of units of formula (II) and are terminated by units of formula (III) and/or are cyclic and are composed of units of formula (II), which formulae are represented below:

• 32
• in which:
• the R6 and R7 symbols, which are alike or different, represent:
• a linear or branched alkyl radical comprising 1 to 8 carbon atoms which is optionally substituted by at least one halogen, preferably fluorine, the alkyl radicals preferably being methyl, ethyl, propyl, octyl and 3,3,3-trifluoropropyl,
• a cycloalkyl radical comprising between 5 and 8 cyclic carbon atoms, which radical is optionally substituted,
• an aryl radical comprising between 6 and 12 carbon atoms, which radical can be substituted, preferably phenyl or dichlorophenyl,
• an aralkyl part having an alkyl part comprising between 5 and 14 carbon atoms and an aryl part comprising between 6 and 12 carbon atoms, which part is optionally substituted on the aryl part by halogens, alkyls and/or alkoxyls comprising 1 to 3 carbon atoms,
• the Z symbols, which are alike or different, represent:
• an R6 and/or R7 group,
• a hydrogen radical,
• and/or a crosslinkable oxetane functional group connected to the silicon of the polyorganosiloxane via a divalent radical which comprises from 2 to 20 carbon atoms and which can comprise at least one heteroatom, preferably oxygen, it being possible for the latter to be bonded directly to the silicon, forming an ≡Si—OC≡ bond,
• with at least one of the Z symbols representing a crosslinkable oxetane functional group.

The process as claimed in the preceding claim, characterized in that the organic species B1 are chosen from the following:

• α1.1) cycloaliphatic epoxides, and in particular:
• epoxides of the 3,4-epoxycyclohexylmethyl 3′,4′-epoxycyclohexanecarboxylate type:
• 33
• or bis(3,4-epoxycyclohexyl) adipate;
• α1.2) noncycloaliphatic epoxides, and in particular:
• epoxides of the type of those resulting from the condensation of bisphenol A and of epichlorohydrin and of the type:
• di- and triglycidyl ethers of bisphenol A alkoxylated with 1,6-hexanediol, with glycerol, with neopentyl glycol and with trimethylolpropane,
• or diglycidyl ethers of bisphenol A,
• alpha-olefin epoxides, Novolac epoxides, epoxidized soybean oil, epoxidized linseed oil and epoxidized polybutadiene,
• α2) acrylates, and in particular:
• epoxidized acrylates, preferably the oligomer of bisphenol A epoxydiacrylate (Ebecryl 600),
• polyester glycerol acrylates, preferably a mixture of oligomer of acrylate which is trifunctional obtained from glycerol and polyester (Ebecryl 810),
• multifunctional acrylates, preferably pentaerythritol triacrylate (PETA), trimethylolpropane triacrylate (TMPTA), 1,6-hexanediol diacrylate (HDODA), trimethylolpropane ethoxylate triacrylate, thiodiethylene glycol diacrylate, tetraethylene glycol diacrylate (TTEGDA), tripropylene glycol diacrylate (TRPGDA), triethylene glycol diacrylate (TREGDA) or trimethylpropane trimethacrylate (TMPTMA),
• urethane acrylates,
• polyether acrylates,
• polyester acrylates,
• unsaturated polyesters,
• acrylic acrylates,
• α3) linear or cyclic alkenyl ethers and in particular:
• vinyl ethers, in particular dodecyl vinyl ether (DDVE), cyclohexyl vinyl ether (CVE), butanediol divinyl ether (BDVE), butanediol monovinyl ether (HBVE), cyclohexanedimethanol divinyl ether (CHDVE), cyclohexanedimethanol monovinyl ether (CHMVE), triethylene-glycol divinyl ether (DVE-3) and vinyl ethers of formulae:
• 34
• propenyl ethers,
• and butenyl ethers;
• α4) polyols, and preferably the compound of formula:
• 35

The process as claimed in any one of the preceding claims, characterized in that the organic matrix B additionally comprises at least one monomer(s) and/or oligomer(s) and/or polymer(s) of polyorganosiloxane B2 nature, which monomer(s) and/or oligomer(s) and/or polymer(s) are composed of units of formula (IV) and are terminated by units of formula (V) or are cyclic and are composed of units of formula (IV), which formulae are represented below:

• 36
• in which:
• the R6 and R7 symbols, which are alike or different, have definitions identical to those given for A4,
• the Z′ symbols, which are alike or different, represent:
• an R6 and/or R7 group,
• a hydrogen radical,
• and/or a crosslinkable organofunctional group, preferably an epoxy functional, dioxolane functional and/or alkenyl ether functional group, connected at the silicon of the polyorganosiloxane via a divalent radical which comprises from 2 to 20 carbon atoms and which can comprise at least one heteroatom, preferably oxygen,
• with at least one of the Z symbols representing a crosslinkable organic functional group.

The process as claimed in the preceding claim, characterized in that the (Brf)s of the polyorganosiloxane B are chosen from the following radicals:

• 37
• —(O)n′—(CH2)n″—O—CH═CH2, —(O)n′—(CH2)n″—R8—O—CH═CH2 and —(O)n′—(CH2)n″—O—CH═CH—R9
• in which:
• n′ represents 0 or 1 and n″ an integer between 1 and 5
• R8 represents:
• a linear, branched or cyclic C1-C12 alkylene radical which is optionally substituted,
• or a C5-C12 arylene radical, preferably a phenylene radical, which is optionally substituted, preferably by one to three C1-C6 alkyl groups,
• and R9 represents a linear or branched C1-C6 alkyl radical.