US 8,618,233 B2Granted

Dual curing polymers and methods for their preparation and use

AssigneeDow Corning Corporation

InventorsKhristopher Alvarez, Nick Shephard, James Tonge

Life of this patent

Estimating the term…

Loading patent…

Abstract

A polymer cures by either radiation or moisture curing mechanisms, or both. The polymer is prepared by hydrosilylation. The polymer includes units of formula: (R22Si02/2)b, (R2Si03/2)c, (SiO4/2)d, (R1′)f, and (R23Si01/2)g, where each R1 is independently an oxygen atom or a divalent hydrocarbon group; each R1′ is independently divalent hydrocarbon group; each R2 is independently a monovalent organic group that is free of terminal aliphatic unsaturation each X is independently a monovalent hydrolyzable group; each J is independently a monovalent epoxy functional organic group; subscript a has a value of 1 or more; subscript b has a value of 0 or more; subscript c has a value of 0 or more; subscript d has a value of 0 or more; subscript e has a value of 1 or more; subscript f has a value of 0 or more; subscript g has a value of 0 or more; subscript s is 1, 2, or 3; and subscript t is 1, 2, or 3.

Claims20

Dependent claims

A polymer comprises, per molecule, an average of two or more groups of formula (I):

where Z is selected from the group consisting of one silicon atom, and a spacer group comprising two or more silicon atoms in which E, A, and R may be bonded to the same silicon atom or different silicon atoms in the spacer group;
where
group A comprises a unit of formula
at a terminus;
group E comprises a unit of formula
at a terminus;
whereby when Z is a spacer, groups of formula (I) comprise two or more of units selected from R22SiO2/2, R2SiO3/2, SiO4/2, R1′, R23SiO1/2, (R22)ESiO1/2, (R22)ASiO1/2, (R2)(E)(A)SiO1/2, (R2)ESiO2/2, (A)ESiO2/2, (R2)ASiO2/2, ESiO3/2, and ASiO3/2 with the proviso that the spacer has at least one unit containing group A and at least one unit containing group E, where group A and group E may be bonded to the same silicon atom or to different silicon atoms in the spacer;
each R is independently selected from the group consisting of R1, R2, E, A, and a covalent bond;
and
where the two or more groups of formula (I) are spaced apart from one another in the polymer;
and
each R1 is independently a divalent hydrocarbon group;
each R1′ is independently a divalent hydrocarbon group;
each R2 is independently a monovalent substituted or unsubstituted hydrocarbon group that is free of terminal aliphatic unsaturation;
each X is independently a monovalent hydrolyzable group;
each J is independently a monovalent epoxy functional organic group;
each subscript s independently has a value of 1, 2, or 3;
and
each subscript t independently has a value of 1, 2, or 3;
where group A has formula (II)
where subscript x has a value of 1 or more;
or
where group E has formula (III)
where subscript y has a value of 1 or more;
with the proviso that substantially all of group X and group J are in formula (I).

22 more elements

A polymer comprises, per molecule, an average of two or more groups of formula (I):

where Z is selected from the group consisting of one silicon atom, and a spacer group comprising two or more silicon atoms in which E, A, and R may be bonded to the same silicon atom or different silicon atoms in the spacer group;
where
group A comprises a unit of formula
at a terminus;
group E comprises a unit of formula
at a terminus;
whereby when Z is a spacer, groups of formula (I) comprise two or more of units selected from R22SiO2/2, R2SiO3/2, SiO4/2, R1′, R23SiO1/2, (R22)ESiO1/2, (R22)ASiO1/2, (R2)(E)(A)SiO1/2, (R2)ESiO2/2, (A)ASiO2/2, (R2)ASiO2/2, ESiO3/2, and ASiO3/2 with the proviso that the spacer has at least one unit containing group A and at least one unit containing group E, where group A and group E may be bonded to the same silicon atom or to different silicon atoms in the spacer;
each R is independently selected from the group consisting of R1, R2, E, A, and a covalent bond;
and
where the two or more groups of formula (I) are spaced apart from one another in the polymer;
and
each R1 is independently an oxygen atom or a divalent hydrocarbon group;
each R1′ is independently a divalent hydrocarbon group;
each R2 is independently a monovalent substituted or unsubstituted hydrocarbon group that is free of terminal aliphatic unsaturation;
each X is independently a monovalent hydrolyzable group;
each J is independently a monovalent epoxy functional organic group;
each subscript s independently has a value of 1, 2, or 3;
and
each subscript t independently has a value of 1, 2, or 3;
with the proviso that substantially all of group X and group J are in formula (I);
and with the proviso where the polymer has formula (V):
or a derivative thereof,
where each R is independently selected from the group consisting of E and A,
subscript h has a value ranging from 50 to 1000, and
each subscript i has a value ranging from 1 to 10;
where group A has formula (II)
where subscript x has a value of 1 or more;
or
where group E has formula (III)
where subscript y has a value of 1 or more;
wherein:
in the derivative of formula (V), the h units of formula R22SiO2/2 are replaced by units comprising (R22SiO2/2)b″, (R2SiO3/2)c″, (SiO4/2)d″, (R1′)f″, or (R23SiO1/2)g″, or a combination thereof, wherein the quantity (b″+c″+d″+f″)=50 to 1000 and g″ has a value of 0 or more;
or
in the derivative of formula (V), the i units of formula R22SiO2/2 may be replaced by units comprising (R22SiO2/2)b′″, (R2SiO3/2)c′″, (SiO4/2)d′″, (R1′)f′″, or (R23SiO1/2)g′″, or a combination thereof, wherein the quantity (b′″+c′″+d′″+f′″)=1 to 25 and g′″ has a value of 0 or more;
or
in the derivative of formula (V), both the h units of formula R22SiO2/2 and the i units of formula R22SiO2/2 are replaced as described above.

33 more elements

A polymer comprises, per molecule, an average of two or more groups of formula (I):

where Z is selected from the group consisting of one silicon atom, and a spacer group comprising two or more silicon atoms in which E, A, and R may be bonded to the same silicon atom or different silicon atoms in the spacer group;
where
group A comprises a unit of formula
at a terminus;
group E comprises a unit of formula
at a terminus;
whereby when Z is a spacer, groups of formula (I) comprise two or more of units selected from R22SiO2/2, R2SiO3/2, SiO4/2, R1′, R23SiO1/2, (R22)ESiO1/2, (R22)ASiO1/2, (R2)(E)(A)SiO1/2, (R2)ESiO2/2, (A)ESiO2/2, (R2)ASiO2/2, ESiO3/2, and ASiO3/2 with the proviso that the spacer has at least one unit containing group A and at least one unit containing group E, where group A and group E may be bonded to the same silicon atom or to different silicon atoms in the spacer;
each R is independently selected from the group consisting of R1, R2, E, A, and a covalent bond;
and
where the two or more groups of formula (I) are spaced apart from one another in the polymer;
and
each R1 is independently an oxygen atom or a divalent hydrocarbon group;
each R1′ is independently a divalent hydrocarbon group;
each R2 is independently a monovalent substituted or unsubstituted hydrocarbon group that is free of terminal aliphatic unsaturation;
each X is independently a monovalent hydrolyzable group;
each J is independently a monovalent epoxy functional organic group;
each subscript s independently has a value of 1, 2, or 3;
and
each subscript t independently has a value of 1, 2, or 3;
with the proviso that substantially all of group X and group J are in formula (I);
and with the proviso where the polymer has formula (VI):
or a derivative thereof, where subscript h has a value ranging from 50 to 1000,
each subscript u independently has a value ranging from 0 to 22;
where group A has formula (II)
where subscript x has a value of 1 or more;
or
where group E has formula (III)
where subscript y has a value of 1 or more;
wherein:
in the derivative of formula (VI), when u is greater than 0, then the silicon atoms to which group A and group E are bonded need not be adjacent in the ring;
or
in the derivative of formula (VI), groups A and E are bonded to the same silicon atom in the ring, and the remaining silicon bonded groups in the ring are R2;
or
in the derivative of formula (VI), the h units of formula R22SiO2/2 are replaced by units comprising (R22SiO2/2)b″″, (R2SiO3/2)c″″, (SiO4/2)d″″, (R1′)f″″, or (R23SiO1/2)g″″, or a combination thereof, wherein the quantity (b″″+c″″+d″″+f″″) has a value ranging from 50 to 1000 and g″″ has a value of 0 or more.

31 more elements

Dependencies are inferred from the claim text.

Facts

Application: 12/517,211Filed 7 Nov 2007 · us provisional application
Priority: 21 Dec 2006
Published: US 2010/0092690 A115 Apr 2010
Granted: 31 Dec 2013
Term ends: Not estimatedThe source records don’t support an estimate.

Classification11 codes

C08G 77/50
In which at least two but not all the silicon atoms are connected by linkages other than oxygen atoms: by carbon linkages
C08J 3/243
Crosslinking, e.g. vulcanising, of macromolecules: two or more independent types of crosslinking for one or more polymers
C09D 183/14
Coating compositions based on macromolecular compounds obtained by reactions forming in the main chain of the macromolecule a linkage containing…:…
C08J 2383/04
Characterised by the use of macromolecular compounds obtained by reactions forming in the main chain of the macromolecule a linkage containing…:…