ACRYLATE-TERMINATED URETHANE POLYBUTADIENES FROM LOW-MONOMER 1:1 MONOADDUCTS FROM REACTIVE OLEFINIC COMPOUNDS AND DIISOCYANATES AND HYDROXY-TERMINATED POLYBUTADIENES FOR LIQUID OPTICALLY CLEAR ADHESIVES (LOCAs)

A product of formula (I)

• where
• a=1 to 1000,
• b=0 to 1000,
• c=0 to 1000,
• d=0 to 1000,
• e=1 to 10,
• f=0 to 500,
• with the proviso that the sum of a+b+c+d+f is not less than 3 and
• with the proviso that the groups with the indices a, b, c, d, and f are freely permutable over the molecule chain and neither of the groups with the indices c and d may follow itself or the respective other group
• and with the proviso that the different monomer units and the fragments with the indices a, b and f may be in a blockwise structure with one another, where individual blocks may also occur multiple times and may be randomly distributed among one another, or else are subject to a random distribution and further are freely permutable with one another, in the sense that they may be arranged in any desired sequence, subject to the restriction that neither of the groups with the indices c and d may follow itself or the respective other group,
• and where
• R1=independently at each occurrence a hydrogen radical or a C1-C8 alkyl group,
• R2=independently at each occurrence a hydrogen radical, a C1-C20 alkyl group, an aryl or alkaryl group,
• or R1 and one of the radicals R2 may together form a ring which includes the atoms to which R1 and R2 are bonded,
• R3=independently at each occurrence a saturated or unsaturated, aliphatic or aromatic, hydrocarbon radical comprising 2 to 30 carbon atoms, which is optionally further substituted,
• R4, R7=independently at each occurrence hydrogen and/or an organic radical, or else optionally R4 and/or R7 may be absent, where, when R4 and R7 are absent, there is a C═C double bond in place of the radicals R4 and R7,
• the bridging fragment Z may be present or absent;
• when the bridging fragment Z is absent, then
• R5, R6=independently at each occurrence hydrogen and/or an organic radical, where,
• when one of the radicals R4 or R7 is absent, the respective geminal radical (i.e. R5 when R4 is absent and R6 when R7 is absent) is an alkylidene radical;
• when the bridging fragment Z is present, then
• R5, R6=hydrocarbon radicals which are bridged cycloaliphatically or aromatically via fragment Z, where Z represents a divalent alkylene or alkenylene radical which may be further substituted,
• R10=independently at each occurrence a hydrogen radical or a C1-C8 alkyl group or an ester group —C(O)—R11 or an acetoacetate group —C(O)—CH2C(O)—R12 or a silyl ether group —Si(R13)3 or a urethane group —C(O)—N—(R14)2 where
• R11, R12, R13=independently at each occurrence a linear or branched, saturated or unsaturated, optionally further substituted C1-C30 alkyl group, an aryl or alkaryl group, and
• R14=independently at each occurrence hydrogen and/or a linear or branched, saturated or unsaturated, optionally further substituted C1-C30 alkyl group, an aryl or alkaryl group.

A product of formula (II)

• MgM′hDiD′jD″mTkQl formula (II)
• where
• M=[R153SiO1/2]
• M′=[R16R152SiO1/2]
• D=[R152SiO2/2]
• D′=[R16R15SiO2/2]
• D″=[R17R15SiO2/2]
• T=[R15SiO3/2]
• Q=[SiO4/2]
• g=0-20,
• h=0-20,
• i=0-1000,
• j=0-20,
• k=0-20,
• l=0-20,
• m=0-20,
• with the proviso that the sum of g+h+i+j+k+l+m is not less than 3 and that the sum of h+j≥1
• and
• R15=independently at each occurrence identical or different C1-C16 hydrocarbon radicals, or H,
• R16=independently at each occurrence identical or different polyether radicals, with the proviso that at least 10% of the radicals are eugenol-based polyether radicals;
• R17=independently at each occurrence identical or different C1-C16 hydrocarbon radicals which also comprise heteroatoms and may be further substituted,