Process for the production of crosslinked polymer employing low VOC-producing silane crosslinker and resulting crosslinked polymer
AssigneeMomentive Performance Materials Inc.
InventorsKeith J. Weller, Philbert E. Ramdatt
Life of this patent
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Abstract
A process for crosslinking polymers employs a silane crosslinker which, upon hydrolysis, produces a reduced quantity of volatile organic compound.
Claims20
A silane of general Formula (1):
- [Y[-G(—SiXuZbvZcw)s]r]n (Formula 1)
- wherein:
- each occurrence of G is a divalent straight chain alkyl of 3 to 18 carbon atoms or a chemical bond;
- each occurrence of X is independently selected from the group consisting of R1O—, R1C(═O)O— and —O(R10CR11)fOH, wherein each occurrence of R1, R10 and R11 is independently R;
- each occurrence of Zb is independently (—O—)0.5, and [—O(R10CR11)fO—]0.5, wherein each occurrence of R10 and R11 is independently R;
- each occurrence of Zc is independently given by —O(R10CR11)fO— wherein each occurrence of R10 and R11 is independently R;
- each occurrence of R is independently an alkyl of C1 to C4 or hydrogen;
- each occurrence of the subscript f is an integer from 1 to 15;
- each occurrence of n is an integer from 1 to 100, with the proviso that when n is greater than 1, then v is a greater than 0 and all the valences for Zb have a silicon atom bonded to them;
- each occurrence of the subscript u is an integer from 0 to 2;
- each occurrence of the subscript v is an integer from 0 to 3;
- each occurrence of the subscript w is an integer 0 or 1, with the proviso that u+v+2w=3;
- each occurrence of the subscript r is 1;
- each occurrence of the subscript s is 1;
- and
- each occurrence of Y is independently CH2═CH—, CHR═CH— or CR2═CH—, with the proviso that said silane contains at least one occurrence of Zb or Zc.
A silane of 1 general Formula (1):
- [Y[-G(—SiXuZbvZcw)s]r]n (Formula 1)
- wherein:
- G is a divalent straight chain alkyl of 3 to 18 carbon atoms or a chemical bond;
- R is an alkyl of C1 to C4 or H;
- X is R1O— or R1C(═O)O—, wherein each occurrence of R1 is independently R;
- each occurrence of Zb is independently (—O—)0.5, wherein each occurrence of R10 and R11 is independently R;
- each occurrence of Zc is independently of R10 and R11 is independently R;
- each occurrence of the subscript f is an integer from 1 to 15;
- n is 1;
- u is 1;
- v is 0;
- w is 1;
- r is 1;
- s is 1;
- and
- Y is CH2═CH—, CHR═CH— or CR2═CH—.
A silane having the structure 1,3-propanedialkoxyethoxyvinylsilane, 1,3-propanedialkoxymethoxyvinylsilane, 1,3-propanedialkoxyisopropoxyvinylsilane, 2-methyl-2,4-pentanedialkoxymethoxyvinylsilane, 2-methyl-2,4-pentanedialkoxyethoxyvinylsilane, 2-methyl-2,4-pentanedialkoxyispropoxyvinylsilane, 1,3-butanedialkoxymethoxyvinylsilane, 1,3-butanedialkoxyethoxyvinylsilane, 1,3-butanedialkoxyisopropoxyvinylsilane, neopentyldialkoxymethoxyvinylsilane, neopentyldialkoxyethoxyvinylsilane, neopentyldialkoxyisopropoxyvinylsilane, 2,3-dimethyl-2,3-butanedialkoxymethoxyvinylsilane, 2,3-dimethyl-2,3-butanedialkoxyethoxyvinylsilane, 2,3-dimethyl-2,3-butanedialkoxyisopropoxyvinylsilane, 2-methyl-1,3-propanedialkoxymethoxyvinylsilane, 2-methyl-1,3-propanedialkoxyethoxyvinylsilane, or and 2-methyl-1,3-propanedialkoxyisopropoxyvinylsilane.
Dependencies are inferred from the claim text.