Cured or uncured linear aromatic polyester composition and process for preparation thereof

• US 4,256,558 A
• Filed: 10/07/1977
• Issued: 03/17/1981
• Est. Priority Date: 10/12/1976
• Status: Expired due to Term

• Current Assignee: Teijin Limited
• Original Assignee: Teijin Limited
• Inventors: Nishihara, Toshio, Inata, Hiroo, Arakawa, Tamio
• Primary Examiner(s): Ziegler, J.
• Application Number:
  US05/840,301
• Time in Patent Office: 1,257 Days
• Field of Search: 260/873, 260/861, 260/867, 204/159.19, 204/159.15, 264/22, 525/10, 525/445, 525/418
• US Class Current: 522/78
• CPC Class Codes: C08F 283/02 on to polycarbonates or saturated polyesters C08F283/004 takes precedence
• CPC Class Codes: C08K 5/0025 Crosslinking or vulcanising agents; including accelerators
• CPC Class Codes: C08K 5/005 Stabilisers against oxidation, heat, light, ozone
• CPC Class Codes: C08L 67/02 Polyesters derived from dicarboxylic acids and dihydroxy compounds C08L67/06 takes precedence

Abstract

A cured or uncured linear aromatic polyester composition consisting essentially of:

(A) 100 parts by weight of a saturated linear aromatic polyester in which at least 70 mole % of the acid component consists of an aromatic dicarboxylic acid, and

(B) 0.1 to 50 parts by weight of a polyallyl compound which contains not less than 2 allyl or substituted allyl groups in the molecule, does not decompose under conditions of melt-blending with the polyester (A), and is non-reactive with the polyester (A) under conditions of melt-blending with the polyester (A), the allyl or substituted allyl groups being expressed by the following formula ##STR1## wherein R₁, R₂ and R₃ are identical to or different from each other and represent a member selected from the group consisting of a hydrogen atom and organic groups.

Claims

1. A process for preparing a cured linear aromatic polyester composition, which comprises extruding under melting conditions, an uncured linear aromatic polyester composition comprising

(A) 100 parts by weight of a saturated linear aromatic polyester in which at least 70 mole % of the acid component consists of terephthalic acid and the glycol component is ethylene glycol, and

(B) 0.1 to 50 parts by weight of a polyallyl compound which contains not less than 2 allyl or substituted allyl groups in the molecule, does not decompose under conditions of melt-blending with the polyester (A), and is non-reactive with the polyester (A) under conditions of melt-blending with the polyester (A), the allyl or substituted allyl groups being expressed by the following formula ##STR24## wherein R₁, R₂ and R₃ are identical to or different from each other and represent a member selected from the group consisting of a hydrogen atoms and organic groups;

and subjecting the resulting extrudate to a curing treatment by the application of ultraviolet irradiation in the presence of a photo-reaction initiator.

2. The process of claim 1 wherein the organic groups represented by R₁, R₂ and R₃ are alkyl groups containing 1 to 6 carbon atoms, a phenyl group, or substituted phenyl groups in which the substituent is selected from halogen atoms and lower alkyl groups.

3. The process of claim 1 wherein the polyallyl compound (B) is selected from the group consisting of

(I) compounds of the general formula

4. The process of claim 1 wherein the linear aromatic polyester (A) has an intrinsic viscosity, as measured in o-chlorophenol at 35°

C., of at least 0.4.

5. The process of claim 3 wherein the polyallyl compound (B) is selected from the group consisting of the compounds of the group (II).

6. The process of claim 1 wherein R₁, R₂ and R₃ are each a hydrogen atom.

7. The process of claim 1 wherein the polyallyl compound is a member selected fron the group consisting of compounds of the following formula:

##STR34## wherein Q'"'"'₁ is a divalent aliphatic group.

8. The process of claim 1 wherein the allyl or substituted allyl group expressed by the formula is allyl, methallyl or crotyl.

9. The process of claim 5 wherein the polyallyl compound (B) is a member selected from the group consisting of

triallyl isocyanurate,

diallyl methyl isocyanurate,

diallyl ethyl isocyanurate,

diallyl decyl isocyanurate

diallyl dodecyl isocyanurate

diallyl stearyl isocyanurate,

diallyl lauryl isocyanurate,

diallyl myristyl isocyanurate,

diallyl cetyl isocyanurate,

ethylenebis diallyl isocyanurate tetramethylenebis diallyl isocyanurate,

hexamethylenebis diallyl isocyanurate,

decamethylenebis diallyl isocyanurate,

polyethylene allyl isocyanurate terminated with a diallyl isocyanurate residue,

polytetramethylene allyl isocyanurate terminated with a diallyl isocyanurate residue,

polyhexamethylene allyl isocyanurate,

polydecamethylene allyl isocyanurate triallyl cyanurate,

diallyl methyl cyanurate,

diallyl ethyl cyanurate,

diallyl cecyl cyanurate,

diallyl dodecyl cyanurate,

diallyl stearyl cyanurate,

diallyl lauryl cyanurate,

diallyl myristyl cyanurate,

diallyl cetyl cyanurate,

tetramethylenebis diallyl cyanurate,

hexamethylenebis diallyl cyanurate,

decamethylenebis diallyl cyanurate,

polytetramethylene allyl cyanurate terminated with a diallyl cyanurate residue,

polyhexamethylene allyl cyanurate terminated with a diallyl cyanurate residue, and

polydecamethylene allyl cyanurate terminated with a diallyl cyanurate residue.

10. The process of claim 1 wherein the linear aromatic polyester composition comprises 1.0 to 20 parts by weight of the polyallyl compound (B) per 100 parts by weight of the saturated linear aromatic polyester (A).

11. A cured linear aromatic polyester composition obtained by the process of claim 1.