US4477629A — Cyanate-containing polymers

Claim 1

Independent Claim 415 words

A composition which comprises (A) from about 1 to 100 percent by weight (pbw) of a cyanate-containing polymer or mixture of cyanate-containing polymers represented by the formula: ##STR7## wherein each R, R' and R" is independently hydrogen or an alkyl group having from 1 to about 4 carbon atoms; each X is independently an alkyl group having from 1 to about 4 carbon atoms, chlorine or bromine; Q is independently a group derived from any suitable polymerization initiator or terminator, ##STR8## wherein each aromatic ring may contain any substituent group as those enumerated in formula I and each R, R' and R" is defined as in formula I; n has a value from about 5 to about 100; n' has a value from zero to about 99; and each x independently has a value from zero to 4; and (B) from zero to about 99 pbw of an aromatic polycyanate or mixture of aromatic polycyanates represented by the formula: ##STR9## wherein each Z is independently H-, an alkyl group having from 1 to about 4 carbon atoms, chlorine or bromine; A is a direct bond, a hydrocarbyl group having from 1 to about 10 carbon atoms, --S--, --S--S--, --O--, ##STR10## y has a value from zero to 5 when n" has a value of 1; y has a value from 2 to 5 when n" has a value of zero; x' has a value of 5 minus the value of y when n" has a value of 1; x' has a value of 6 minus the values of y plus y" when n" has a value of zero; x" has a value of 5 minus the value of y"; y" has a value of zero to 5; n" has a value of zero to 3; with the proviso that the sum of y and y" is always at least two; and (C) from zero to about 99 pbw of an epoxy resin or mixture of epoxy resins represented by the formulas: ##STR11## wherein R, X, Z, n', and x are as defined above; m' has a value of 0.01 to about 10, and each A is independently a hydrocarbyl group having from 1 to about 10 carbon atoms, --S--, --S--S--, --O--, ##STR12## each A' is independently a hydrocarbyl group having from 1 to about 10 carbon atoms; each m has a value of zero or 1; wherein the pbw of the individual components is based upon the total weight of components A, B and C.

Claim 2

Dependent Claim 415 words

A composition which comprises (A) from about 1 to 100 percent by weight (pbw) of a cyanate-containing polymer or mixture of cyanate-containing polymers represented by the formula: ##STR7## wherein each R, R' and R" is independently hydrogen or an alkyl group having from 1 to about 4 carbon atoms; each X is independently an alkyl group having from 1 to about 4 carbon atoms, chlorine or bromine; Q is independently a group derived from any suitable polymerization initiator or terminator, ##STR8## wherein each aromatic ring may contain any substituent group as those enumerated in formula I and each R, R' and R" is defined as in formula I; n has a value from about 5 to about 100; n' has a value from zero to about 99; and each x independently has a value from zero to 4; and (B) from zero to about 99 pbw of an aromatic polycyanate or mixture of aromatic polycyanates represented by the formula: ##STR9## wherein each Z is independently H-, an alkyl group having from 1 to about 4 carbon atoms, chlorine or bromine; A is a direct bond, a hydrocarbyl group having from 1 to about 10 carbon atoms, --S--, --S--S--, --O--, ##STR10## y has a value from zero to 5 when n" has a value of 1; y has a value from 2 to 5 when n" has a value of zero; x' has a value of 5 minus the value of y when n" has a value of 1; x' has a value of 6 minus the values of y plus y" when n" has a value of zero; x" has a value of 5 minus the value of y"; y" has a value of zero to 5; n" has a value of zero to 3; with the proviso that the sum of y and y" is always at least two; and (C) from zero to about 99 pbw of an epoxy resin or mixture of epoxy resins represented by the formulas: ##STR11## wherein R, X, Z, n', and x are as defined above; m' has a value of 0.01 to about 10, and each A is independently a hydrocarbyl group having from 1 to about 10 carbon atoms, --S--, --S--S--, --O--, ##STR12## each A' is independently a hydrocarbyl group having from 1 to about 10 carbon atoms; each m has a value of zero or 1; wherein the pbw of the individual components is based upon the total weight of components A, B and C.

Claim 3

Dependent Claim 135 words

A composition of claim 1, wherein (i) component A is present in quantities of from about 1 to about 75 pbw; (ii) component B is present in quantities of from about 10 to about 90 pbw; (iii) component C is present in quantities of from about zero to about 50 pbw; (iv) in formula I, n has a value from about 15 to about 80, n' has a value from zero to about 5; (v) in formula III, when A is a hydrocarbyl group it has from 1 to 4 carbon atoms, n' has a value from zero to about 5 and each R is hydrogen; and (vi) in formula IV, each R is hydrogen and A' has from 1 to about 4 carbon atoms, and m' has a value from 0.01 to about 4.

Claim 4

Dependent Claim 51 words

A composition of claim 2 wherein (i) component A is present in quantities of from about 1 to about 50 pbw; (ii) component B is present in quantities of from about 40 to about 85 pbw; (iii) component C is present in quantities of from about zero to about 25 pbw.

Claim 5

Dependent Claim 107 words

A composition of claims 1, 2 or 3 wherein (i) in Formula I, each R, R' and R" are hydrogen and x has a value of zero; (ii) in Formula II, when component B is present, A is an isopropylidene group, each Z is hydrogen, n" has a value of 1 and y and y" each have a value of 1; and (iii) component C, when present, is represented by formula III wherein each R is hydrogen, each A is an isopropylidene group, m has a value of 1, n' has a value of from zero to about 5 and each x has a value of zero.

Claim 6

Dependent Claim 121 words

A composition of claims 1, 2 or 3 wherein (i) each R, R' and R" is hydrogen, X is bromine and x has a value of 1 or 2; (ii) in formula II, when component B is present, A is an isopropylidene group, at least one Z is bromine and the other Z's are hydrogen, n" has a value of 1 and y and y" each have a value of 1; and (iii) component C, when present, is represented by formula III wherein each R is hydrogen, each A is an isopropylidene group, each X is bromine, m has a value of 1, n' has a value of from zero to about 5 and each x has a value of 2.

Claim 7

Dependent Claim 39 words

A product resulting from mixing a composition of claims 1, 2 or 3 with an effective quantity of a suitable curing agent or catalyst or mixture of such curing agents or catalysts and subjecting the mixture to curing conditions.

Claim 8

Dependent Claim 36 words

A product resulting from mixing a composition of claim 4 with an effective quantity of a suitable curing agent or catalyst or mixture of such curing agents or catalysts and subjecting the mixture to curing conditions.

Claim 9

Dependent Claim 36 words

A product resulting from mixing a composition of claim 5 with an effective quantity of a suitable curing agent or catalyst or mixture of such curing agents or catalysts and subjecting the mixture to curing conditions.

Annuity Stage	Window Opens	Payment Deadline	Surcharge Period Until	Estimated Fee	Status
3.5 Years (Year 4)	1987-10-16	1988-04-16	1988-10-16	$2000.00	Window Closed / Lapsed
7.5 Years (Year 8)	1991-10-16	1992-04-16	1992-10-16	$3760.00	Window Closed / Lapsed
11.5 Years (Year 12)	1995-10-16	1996-04-16	1996-10-16	$7700.00	Window Closed / Lapsed

Cyanate-containing polymers

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