1. A novolak resin, wherein the resin comprises:
(a) 1-30 wt % alkylphenols;
(b) 5-20 wt % resorcinol;
(c) 45-98 wt % phenol; and
(d) one or more aldehydes;
wherein the weight percentages are based on the total weight of components (a), (b), and (c).
2. The novolak resin of claim 1, wherein one or more of the alkyl groups in the alkylphenols is a C4-C60 alkyl group.
3. The novolak resin of claim 2, wherein one or more of the alkyl groups in the alkylphenols is a C24-C28 alkyl group.
4. The novolak resin according to claim 1, wherein one or more of the aldehydes is formaldehyde.
5. The novolak resin according to claim 1, wherein the resin comprises:
(a) 5-20 wt % alkylphenols;
(b) 5-15 wt % of resorcinol;
(c) 65-90 wt % of phenol; and
(d) one or more aldehydes;
wherein the weight percentages are based on the total weight of components (a), (b), and (c).
6. The novolak resin according to claim 5, wherein the resin comprises:
(a) 5-15 wt % alkylphenols;
(b) 5-15 wt % resorcinol;
(c) 70-90 wt % phenol; and
(d) formaldehyde;
wherein the weight percentages are based on the total weight of components (a), (b), and (c).
7. A composition comprising one or more rubber compounds and the novolak resin according to claim 1.
8. The composition of claim 7, wherein the weight ratio of said one or more rubber compounds to said novolak resin ranges from about 99:1 to about 9:1.
9. A product prepared at least in part by vulcanizing the composition according to claim 7.
10. The product of claim 9, wherein said product is selected from the group consisting of tires, hoses, power belts, conveyor belts, printing rolls, rubber shoe heels, rubber shoe soles, rubber wringers, automobile floor mats, mud flaps for trucks, ball mill liners, and weather strips.
11. The product of claim 9, wherein said product is a wire belt skim coat.
12. A tire comprising a novolak resin, wherein the novolak resin comprises:
(a) 1-30 wt % alkylphenols;
(b) 5-20 wt % resorcinol;
(c) 45-98 wt % phenol; and
(d) one or more aldehydes;
wherein the weight percentages are based on the total weight of components (a), (b), and (c).
13. The tire of claim 12, wherein one or more of the alkyl groups in the alkylphenols is a C4-C60 alkyl group.
14. The tire of claim 12, wherein one or more of the alkyl groups in the alkylphenol is a C24-C28 alkyl group.
15. A process for preparing a rubber composition, comprising the steps of:
(a) mixing one or more oils with one or more novolak resins of claim 1 to produce a novolak-oil composition; and
(b) mixing said novolak-oil composition with one or more rubber compounds to produce a rubber composition.
16. The process according to claim 15, wherein mixing said one or more oils with said one or more novolak resins is effected by melt blending.
17. The process according to claim 15, wherein one or more of the oils is a naturally derived oil.
18. The process according to claim 15, wherein one or more of the oils is a tall oil, a linseed oil, or a tung oil.
19. The process according to claim 15, wherein the weight percentage of said one or more oils ranges from about 0.5 to about 20 wt %, based on the total weight of said novolak-oil composition.
20. The process according to claim 19, wherein the weight percentage of said one or more oils ranges from about 2 to about 10 wt %.
21. The process according to claim 15, wherein one or more of the alkyl groups in the alkylphenols is a C8-C60 alkyl group.
22. The process according to claim 15, wherein the weight ratio of said one or more rubber compounds to said novolak-oil composition ranges from about 99:1 to about 4:1.
23. The process according to claim 22, wherein said ratio ranges from about 49:1 to about 9:1.
24. The process according to claim 15, wherein one or more of the alkyl groups in the alkylphenols in the novolak resins is a C4-C60 alkyl group.
25. The process according to claim 15, wherein one or more of the alkyl groups in the alkylphenols in the novolak resins is a C24-C28 alkyl group.
The claims below are in addition to those above.
All refrences to claim(s) which appear below refer to the numbering after this setence.
1. A positioning device, comprising:
a housing;
a shaft swivelable relative to the housing, an end of the shaft attachable to a component to be positioned;
a roller-bearing unit adapted to support the shaft with respect to the housing, a first part of the roller-bearing unit connected in rotatably fixed manner to the shaft, a second part of the roller-bearing unit connected in rotatably fixed manner to the housing;
a swivel drive including a stator and a rotor, the rotor movable relative to the stator;
a position-measurement device including two parts movable relative to each other; and
a ring diaphragm secured to the roller-bearing unit and to the housing;
wherein the rotor of the swivel drive and a first part of the position-measurement device are connected in rotatably fixed manner to the shaft, the shaft arranged torsionally stiff and axially movable relative to the housing by the ring diaphragm.
2. The positioning device according to claim 1, wherein the ring diaphragm is spatially curved.
3. The positioning device according to claim 1, wherein the ring diaphragm is formed of a metal material.
4. The positioning device according to claim 1, wherein the ring diaphragm is secured to at least one of (a) the roller-bearing unit and (b) the housing by one of (a) a clamp connection and (b) a bonded connection.
5. The positioning device according to claim 1, wherein the second part of the roller-bearing unit includes a bushing, the ring diaphragm secured to the bushing.
6. The positioning device according to claim 5, wherein the bushing includes an external thread adapted to receive a nut, the ring diaphragm clamped on the bushing by the nut.
7. The positioning device according to claim 4, wherein the housing includes an internal thread adapted to receive an eyebolt, the ring diaphragm clamped on the housing by the eyebolt.
8. The positioning device according to claim 1, wherein the shaft is formed of a material having a coefficient of thermal expansion that differs from a coefficient of thermal expansion of a material of the housing.
9. The positioning device according to claim 1, wherein a free radial dimension of the ring diaphragm is at least 30 times greater than a thickness of the ring diaphragm.
10. The positioning device according to claim 1, wherein the position-measurement device is configured to operate by photoelectric scanning.
11. The positioning device according to claim 1, wherein the position-measurement device is configured to operate according to an interferential measurement principle.
12. The positioning device according to claim 10, wherein the first part of the position-measurement device includes a transparent phase grating, and a second part of the position-measurement device includes a reflection phase grating.
13. The positioning device according to claim 12, wherein the first part of the position-measurement device includes a reflection phase grating, and the second part of the position-measurement device includes a transparent phase grating.
14. The positioning device according to claim 1, wherein the ring diaphragm is secured to the housing in a rotatably fixed manner.