Polymerizable composition

Patent metadata

Field	Value
Publication number	US-11168173-B2
Application number	US-201716070433-A
Country	US
Kind code	B2
Filing date	Jan 16, 2017
Priority date	Jan 20, 2016
Publication date	Nov 9, 2021
Grant date	Nov 9, 2021

Abstract

A polymerizable composition comprisinga) at feast one cyclic amide,b) from 2.8 to 3.5% by weight, preferably from 2.9 to 3.1% by weight, of at least one blocked polyisocyanate, andc) from 1.2 to 1.4% by weight of at least one catalyst for the polymerization of the cyclic amide,where the ratio by weight of components b) to c) is from 2.0 to 2.9 and the % by weight data are always based on the entirety of components a) to c).

First claim

What is claimed is:

1. A polymerizable composition comprising:
a) from 95.5 to 95.9% by weight, based on the combined weight of components a), b) and c), of at least one cyclic amide, wherein the cyclic amide is laurolactam, caprolactam, or a mixture thereof,
b) from 2.9 to 3.1% by weight, based on the combined weight of components a), b) and c), of at least one blocked aliphatic polyisocyanate, and
c) from 1.2 to 1.4% by weight, based on the combined weight of components a), b) and c), of at least one catalyst for the polymerization of the cyclic amide,
wherein components a), b) and c) combined make up from 50 to 100% by weight based on the total weight of the polymerizable composition.

2. The polymerizable composition as claimed in claim 1 , wherein component b) comprises at least hexamethylene diisocyanate (HDI) as blocked aliphatic polyisocyanate.

3. The polymerizable composition as claimed in claim 1 , wherein the at least one catalyst c) is selected from the group consisting of sodium caprolactamate, potassium caprolactamate, magnesium bromide caprolactamate, magnesium chloride caprolactamate, magnesium biscaprolactamate, sodium hydride, sodium, sodium hydroxide, sodium methanolate, sodium ethanolate, sodium propanolate, sodium butanolate, potassium hydride, potassium hydroxide, potassium methanolate, potassium ethanolate, potassium propanolate, and potassium butanolate.

4. A process for the production of the polymerizable composition as claimed in claim 1 , the process comprising contacting the cyclic amide with the at least one blocked aliphatic polyisocyanate and the at least one catalyst.

5. The polymerizable composition according to claim 1 , wherein the composition further comprises up to 50% by weight of fibrous material, based on the total weight of the composition.

6. The polymerizable composition according to claim 1 , wherein:
b) the blocked aliphatic polyisocyanate comprises at least hexamethylene diisocyanate (HDI); and
c) the at least one catalyst is selected from the group consisting of sodium caprolactamate, potassium caprolactamate, magnesium bromide caprolactamate, magnesium chloride caprolactamate, magnesium biscaprolactamate, sodium hydride, sodium, sodium hydroxide, sodium methanolate, sodium ethanolate, sodium propanolate, sodium butanolate, potassium hydride, potassium hydroxide, potassium methanolate, potassium ethanolate, potassium propanolate, and potassium butanolate.

7. The polymerizable composition according to claim 6 , wherein
the at least one catalyst is selected from the group consisting of sodium hydride, sodium, and sodium caprolactamate.

8. A process for the production of a fiber composite material, the process comprising:
ia) contacting the polymerizable composition as claimed in claim 1 , with fibers to produce a fibered composition, or
ib) contacting at least one of the individual components a), b) and c) of the polymerizable composition of claim 1 with fibers, followed by contacting the remaining components of the polymerizable composition of claim 1 with one another to produce a fibered composition; and
ii) polymerizing the resultant fibered composition at a temperature of 120 to 300° C. to produce a fiber composite material,
wherein the residual content of monomeric amide a) in the fiber composite material is at most 0.3% by weight, based on the fiber composite material.

9. The process as claimed in claim 8 , wherein the polymerizable composition or the individual components a), b) and c) thereof is/are brought into contact with from 5 to 65% by volume of the fibers, based on the fiber composite material.

10. The process as claimed in claim 8 , wherein the fibers comprise glass fibers.

11. A fiber composite material obtained by the process of claim 8 .

12. The process as claimed in claim 8 , wherein:
the polymerizable composition or the individual components a), b) and c) thereof is/are brought into contact with 45 to 65% by volume of the fibers, based on the fiber composite material;
the fibers comprise glass fibers;
the fibers do not comprise reactive size;
the fibered composition is polymerized at a temperature of 140 to 180° C.; and
the residual content of monomeric amide a) in the fiber composite material is at most 0.25% by weight, based on the fiber composite material.

13. A fiber composite material obtained by the process of claim 12 .

Assignees

• Lanxess Deutschland Gmbh

Inventors

• Witt Michael
• Morick Joachim
• Gittel Dieter

Classifications

• C08G18/00

  Polymeric products of isocyanates or isothiocyanates · CPC title

• C08G69/18 Primary

  Anionic polymerisation · CPC title

• C08G18/8074

  Lactams · CPC title

• C08J2375/12

  from compounds containing nitrogen and active hydrogen, the nitrogen atom not being part of an isocyanate group · CPC title

• C08G18/3844 Primary

  containing one nitrogen atom in the ring · CPC title