Glass fiber reinforced elastomers

Claim 2

A glass fiber bundle as defined in claim 2 wherein the bundle is in the form of a cord formed of a plurality of strands of glass fibers.

Claim 3

A glass fiber bundle as defined in claim 3 wherein the strands forming the cord are twisted and plied together.

Claim 4

A glass fiber bundle as defined in claim 2 wherein the fiber bundle is in the form of a woven or non-woven fabric formed of cords of fibers.

Claim 5

In a glass fiber reinforced elastomeric product wherein elastomeric material constitutes a continuous phase in which the glass fibers are distributed, the improvement in the bonding relationship between the glass fiber surfaces of the elastomeric material comprising an anchoring agent selected from the group consisting of a silyl amide formed from an organo silicon compound selected from the group consisting of an organo silane containing one to three readily hydrolyzable groups and at least one organic group containing up to 12 carbon atoms and substituted by at least one amino group, with any remaining valences on the silicon atom being taken up by hydrogen and the corresponding silanols and siloxanes and an acid compound selected from the group consisting of aliphatic, cycloaliphatic and aromatic carboxylic acids containing five to 30 carbon atoms, their anhydrides and acid halides; a silyl amide formed of an amino silane containing one to three readily hydrolyzable groups and at least one organic group containing up to 12 carbon atoms and substituted by at least one amino group with any remaining valences on the silicon atom being taken up by hydrogen and a carboxy silAne containing one to three readily hydrolyzable groups and at least one organic group containing up to 12 carbon atoms and substituted by at least one carboxy group, with any remaining valences on the silicon atom being taken up by hydrogen; a silyl amide formed from a carboxy compound selected from the group consisting of an organo silane containing one to three readily hydrolyzable groups and at least one organic group containing up to 12 carbon atoms and substituted by at least one carboxy group, with any remaining valences on the silicon atom being taken up by hydrogen, and the corresponding silanols and polysiloxanes and an amine compound selected from the group consisting of aliphatic and aromatic amines containing one to 20 carbon atoms.

Claim 6

A product as defined in claim 6 wherein the anchoring agent is present in the form of a thin coating on the individual glass fiber surfaces.

Claim 7

A product as defined in claim 6 wherein the anchoring agent is present as a thin film on the individual glass fiber surfaces and the glass fibers are in the form of bundles, said bundles having an elastomer compatible material as an impregnant therein.

Claim 8

A product as defined in claim 8 wherein the bundle is in the form of a cord formed of a plurality of strands of glass fibers.

Claim 9

A glass fiber bundle comprising a plurality of glass fibers, a thin coating on the individual glass fiber surfaces comprising an anchoring agent selected from the group consisting of (1) a silyl amide formed from an organo silicon compound selected from the group consisting of an organo silane containing one to three readily hydrolyzable groups and at least one organic group containing up to 12 carbon atoms and substituted by at least one amino group, with any remaining valences on the silicon atom being taken up by hydrogen and the corresponding silanols and siloxanes and an acid compound selected from the group consisting of aliphatic, cycloaliphatic and aromatic carboxylic acids containing five to 30 carbon atoms, their anhydrides and acid halides; (2) a silyl amide formed of an amino silane containing one to three readily hydrolyzable groups and at least one organic group containing up to 12 carbon atoms and substituted by at least one amino group with any remaining valences on the silicon atom being taken up by hydrogen and a carboxy silane containing one to three readily hydrolyzable groups and at least one organic group containing up to 12 carbon atoms and substituted by at least one carboxy group, with any remaining valences on the silicon atom being taken up by hydrogen; (3) a silyl amide formed from a carboxy compound selected from the group consisting of an organo silane containing one to three readily hydrolyzable groups and at least one organic group containing up to 12 carbon atoms and substituted by at least one carboxy group, with any remaining valences on the silicon atoms being taken up by hydrogen, and the corresponding silanols and polysiloxanes and an amine compound selected from the group consisting of aliphatic and aromatic amines containing one to 20 carbon atoms, and an elastomer compatible impregnant in the bundle.

Claim 10

A bundle as defined in claim 10 wherein the silyl amide is (1) and the organo silicon compound is a silane of the formula (H2N - R1 -)n Si(R2)m Z(4 m n) wherein R1 is a divalent organic radical, R2 is a monovalent organic radical or hydrogen, Z is a readily hydrolyzable group, m is 0 or an integer from 1 to 2, and n is an integer from 1 to 3.

Claim 11

A glass fiber bundle as defined in claim 11 wherein the acid compound is selected from the group consisting of a compound of the formula

Claim 12

A glass fiber bundle as defined in claim 10 wherein the coating also includes a film-forming binder, a lubricant or mixtures thereof.

Claim 13

A glass fiber bundle as defined in claim 10 wherein the silyl amide is (3 ) and the carboxy compound is a compound of the formula Z(4 p) Si(-R5-COOH)p wherein Z is a readily hydrolyzable group, R5 is a divalent organic group and p is an integer from 1 to 2.

Claim 14

A glass fiber bundle as defined in claim 14 wherein the amine compound is a compound of the formula H2N - R6 - NH2 wherein R6 is a divalent organic radical.

Claim 15

A glass fiber bundle as defined in claim 14 wherein the amine compound is a compound of the formula R7 - NH2 wherein R7 is selected from the group consisting of alkyl, aryl, an N-heterocyclic group and an ester group of the formula

Claim 16

A glass fiber bundle as defined in claim 10 wherein the silyl amide is (2) and the amino silane has the formula (H2N - R1 -)n Si(R2)mZ(4 n m) wherein R1 is a divalent organic radical, R2 is a monovalent organic radical or hydrogen, Z is a readily hydrolyzable group, m is 0 or an integer from 1 to 2 and n is an integer from 1 to 3.

Claim 17

A glass fiber bundle as defined in claim 17 wherein the carboxy silane has the formula Z(4 p) Si(-R5-COOH)p wherein Z is a readily hydrolyzable group, R5 is a divalent organic group and p is an integer from 1 to 2.

Claim 18

A glass fiber bundle as defined in claim 10 wherein the bundle is in the form of a cord formed of a plurality of strands of glass fibers.